diff options
102 files changed, 739 insertions, 423 deletions
diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt index 8e2670781c9b..8fdb78f3c6c9 100644 --- a/Documentation/filesystems/dax.txt +++ b/Documentation/filesystems/dax.txt @@ -25,7 +25,7 @@ size when creating the filesystem. Currently 3 filesystems support DAX: ext2, ext4 and xfs. Enabling DAX on them is different. -Enabling DAX on ext4 and ext2 +Enabling DAX on ext2 ----------------------------- When mounting the filesystem, use the "-o dax" option on the command line or @@ -33,8 +33,8 @@ add 'dax' to the options in /etc/fstab. This works to enable DAX on all files within the filesystem. It is equivalent to the '-o dax=always' behavior below. -Enabling DAX on xfs -------------------- +Enabling DAX on xfs and ext4 +---------------------------- Summary ------- diff --git a/Documentation/filesystems/ext4/verity.rst b/Documentation/filesystems/ext4/verity.rst index 3e4c0ee0e068..e99ff3fd09f7 100644 --- a/Documentation/filesystems/ext4/verity.rst +++ b/Documentation/filesystems/ext4/verity.rst @@ -39,3 +39,6 @@ is encrypted as well as the data itself. Verity files cannot have blocks allocated past the end of the verity metadata. + +Verity and DAX are not compatible and attempts to set both of these flags +on a file will fail. diff --git a/Documentation/sh/index.rst b/Documentation/sh/index.rst index bc8db7ba894a..0bd405acf68f 100644 --- a/Documentation/sh/index.rst +++ b/Documentation/sh/index.rst @@ -16,18 +16,6 @@ Store Queue API .. kernel-doc:: arch/sh/kernel/cpu/sh4/sq.c :export: -SH-5 ----- - -TLB Interfaces -~~~~~~~~~~~~~~ - -.. kernel-doc:: arch/sh/mm/tlb-sh5.c - :internal: - -.. kernel-doc:: arch/sh/include/asm/tlb_64.h - :internal: - Machine Specific Interfaces =========================== diff --git a/arch/ia64/kernel/unwind_i.h b/arch/ia64/kernel/unwind_i.h index 67994a7e5816..1dd57ba44327 100644 --- a/arch/ia64/kernel/unwind_i.h +++ b/arch/ia64/kernel/unwind_i.h @@ -42,7 +42,7 @@ enum unw_register_index { struct unw_info_block { u64 header; - u64 desc[0]; /* unwind descriptors */ + u64 desc[]; /* unwind descriptors */ /* personality routine and language-specific data follow behind descriptors */ }; diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index b04e6e72a592..088bd764e0b7 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -34,6 +34,7 @@ KCOV_INSTRUMENT := n PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING +PURGATORY_CFLAGS += $(call cc-option,-fno-stack-protector) # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That # in turn leaves some undefined symbols like __fentry__ in purgatory and not diff --git a/block/partitions/ldm.h b/block/partitions/ldm.h index 841580af7f9b..d8d6beaa72c4 100644 --- a/block/partitions/ldm.h +++ b/block/partitions/ldm.h @@ -93,7 +93,7 @@ struct frag { /* VBLK Fragment handling */ u8 num; /* Total number of records */ u8 rec; /* This is record number n */ u8 map; /* Which portions are in use */ - u8 data[0]; + u8 data[]; }; /* In memory LDM database structures. */ diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c index 57d3b2e2d007..0b2c20fddb7c 100644 --- a/drivers/amba/tegra-ahb.c +++ b/drivers/amba/tegra-ahb.c @@ -120,7 +120,7 @@ static const u32 tegra_ahb_gizmo[] = { struct tegra_ahb { void __iomem *regs; struct device *dev; - u32 ctx[0]; + u32 ctx[]; }; static inline u32 gizmo_readl(struct tegra_ahb *ahb, u32 offset) diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 14345a87c7cc..33d0831c99b6 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -620,7 +620,7 @@ struct fifo_buffer { unsigned int head_index; unsigned int size; int total; /* sum of all values */ - int values[0]; + int values[]; }; extern struct fifo_buffer *fifo_alloc(unsigned int fifo_size); diff --git a/drivers/block/drbd/drbd_protocol.h b/drivers/block/drbd/drbd_protocol.h index e6fc5ad72501..dea59c92ecc1 100644 --- a/drivers/block/drbd/drbd_protocol.h +++ b/drivers/block/drbd/drbd_protocol.h @@ -271,7 +271,7 @@ struct p_rs_param { u32 resync_rate; /* Since protocol version 88 and higher. */ - char verify_alg[0]; + char verify_alg[]; } __packed; struct p_rs_param_89 { @@ -305,7 +305,7 @@ struct p_protocol { u32 two_primaries; /* Since protocol version 87 and higher. */ - char integrity_alg[0]; + char integrity_alg[]; } __packed; @@ -360,7 +360,7 @@ struct p_sizes { u16 dds_flags; /* use enum dds_flags here. */ /* optional queue_limits if (agreed_features & DRBD_FF_WSAME) */ - struct o_qlim qlim[0]; + struct o_qlim qlim[]; } __packed; struct p_state { @@ -409,7 +409,7 @@ struct p_compressed_bm { */ u8 encoding; - u8 code[0]; + u8 code[]; } __packed; struct p_delay_probe93 { diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h index b3fdbdc25acb..31e427e273f8 100644 --- a/drivers/crypto/chelsio/chcr_crypto.h +++ b/drivers/crypto/chelsio/chcr_crypto.h @@ -223,7 +223,7 @@ struct chcr_authenc_ctx { struct __aead_ctx { struct chcr_gcm_ctx gcm[0]; - struct chcr_authenc_ctx authenc[0]; + struct chcr_authenc_ctx authenc[]; }; struct chcr_aead_ctx { @@ -235,7 +235,7 @@ struct chcr_aead_ctx { u8 nonce[4]; u16 hmac_ctrl; u16 mayverify; - struct __aead_ctx ctx[0]; + struct __aead_ctx ctx[]; }; struct hmac_ctx { @@ -247,7 +247,7 @@ struct hmac_ctx { struct __crypto_ctx { struct hmac_ctx hmacctx[0]; struct ablk_ctx ablkctx[0]; - struct chcr_aead_ctx aeadctx[0]; + struct chcr_aead_ctx aeadctx[]; }; struct chcr_context { @@ -257,7 +257,7 @@ struct chcr_context { unsigned int ntxq; unsigned int nrxq; struct completion cbc_aes_aio_done; - struct __crypto_ctx crypto_ctx[0]; + struct __crypto_ctx crypto_ctx[]; }; struct chcr_hctx_per_wr { diff --git a/drivers/dma/milbeaut-hdmac.c b/drivers/dma/milbeaut-hdmac.c index 8853d442430b..a8cfb59f6efe 100644 --- a/drivers/dma/milbeaut-hdmac.c +++ b/drivers/dma/milbeaut-hdmac.c @@ -77,7 +77,7 @@ struct milbeaut_hdmac_device { struct dma_device ddev; struct clk *clk; void __iomem *reg_base; - struct milbeaut_hdmac_chan channels[0]; + struct milbeaut_hdmac_chan channels[]; }; static struct milbeaut_hdmac_chan * diff --git a/drivers/dma/milbeaut-xdmac.c b/drivers/dma/milbeaut-xdmac.c index ab3d2f395378..85a597228fb0 100644 --- a/drivers/dma/milbeaut-xdmac.c +++ b/drivers/dma/milbeaut-xdmac.c @@ -74,7 +74,7 @@ struct milbeaut_xdmac_chan { struct milbeaut_xdmac_device { struct dma_device ddev; void __iomem *reg_base; - struct milbeaut_xdmac_chan channels[0]; + struct milbeaut_xdmac_chan channels[]; }; static struct milbeaut_xdmac_chan * diff --git a/drivers/dma/moxart-dma.c b/drivers/dma/moxart-dma.c index 4ab493d46375..347146a6e1d0 100644 --- a/drivers/dma/moxart-dma.c +++ b/drivers/dma/moxart-dma.c @@ -127,7 +127,7 @@ struct moxart_desc { unsigned int dma_cycles; struct virt_dma_desc vd; uint8_t es; - struct moxart_sg sg[0]; + struct moxart_sg sg[]; }; struct moxart_chan { diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index b9f0d9636620..55fc7400f717 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -225,7 +225,7 @@ struct tegra_dma { u32 global_pause_count; /* Last member of the structure */ - struct tegra_dma_channel channels[0]; + struct tegra_dma_channel channels[]; }; static inline void tdma_write(struct tegra_dma *tdma, u32 reg, u32 val) diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c index c4a5c170c1f9..35d81bd857f1 100644 --- a/drivers/dma/ti/edma.c +++ b/drivers/dma/ti/edma.c @@ -211,7 +211,7 @@ struct edma_desc { u32 residue; u32 residue_stat; - struct edma_pset pset[0]; + struct edma_pset pset[]; }; struct edma_cc; diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 945b7c604f91..c91e2dc1bb72 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -170,7 +170,7 @@ struct udma_desc { void *metadata; /* pointer to provided metadata buffer (EPIP, PSdata) */ unsigned int hwdesc_count; - struct udma_hwdesc hwdesc[0]; + struct udma_hwdesc hwdesc[]; }; enum udma_chan_state { diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index 39382694fdfc..68e48bf54d78 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -88,7 +88,7 @@ struct timb_dma { struct dma_device dma; void __iomem *membase; struct tasklet_struct tasklet; - struct timb_dma_chan channels[0]; + struct timb_dma_chan channels[]; }; static struct device *chan2dev(struct dma_chan *chan) diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index c7ea4f2d5ca6..fb6c651214f3 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -117,7 +117,7 @@ struct inbound_transaction_resource { struct descriptor_resource { struct client_resource resource; struct fw_descriptor descriptor; - u32 data[0]; + u32 data[]; }; struct iso_resource { diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index 404a035f104d..439d918bbaaf 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -620,7 +620,7 @@ struct fw_request { u32 request_header[4]; int ack; u32 length; - u32 data[0]; + u32 data[]; }; static void free_response_callback(struct fw_packet *packet, diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h index 4b0e4ee655a1..71d5f16f311c 100644 --- a/drivers/firewire/core.h +++ b/drivers/firewire/core.h @@ -191,7 +191,7 @@ struct fw_node { /* Upper layer specific data. */ void *data; - struct fw_node *ports[0]; + struct fw_node *ports[]; }; static inline struct fw_node *fw_node_get(struct fw_node *node) diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c index 6ca2f5ab6c57..5fd6a60b6741 100644 --- a/drivers/firewire/nosy.c +++ b/drivers/firewire/nosy.c @@ -52,7 +52,7 @@ struct pcl { struct packet { unsigned int length; - char data[0]; + char data[]; }; struct packet_buffer { diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 33269316f111..54fdc39cd0bc 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -111,7 +111,7 @@ struct descriptor_buffer { dma_addr_t buffer_bus; size_t buffer_size; size_t used; - struct descriptor buffer[0]; + struct descriptor buffer[]; }; struct context { diff --git a/drivers/firmware/dmi-sysfs.c b/drivers/firmware/dmi-sysfs.c index b6180023eba7..8b8127fa8955 100644 --- a/drivers/firmware/dmi-sysfs.c +++ b/drivers/firmware/dmi-sysfs.c @@ -262,7 +262,7 @@ struct dmi_system_event_log { u8 header_format; u8 type_descriptors_supported_count; u8 per_log_type_descriptor_length; - u8 supported_log_type_descriptos[0]; + u8 supported_log_type_descriptos[]; } __packed; #define DMI_SYSFS_SEL_FIELD(_field) \ diff --git a/drivers/firmware/google/memconsole-coreboot.c b/drivers/firmware/google/memconsole-coreboot.c index fd7f0fbec07e..d17e4d6ac9bc 100644 --- a/drivers/firmware/google/memconsole-coreboot.c +++ b/drivers/firmware/google/memconsole-coreboot.c @@ -21,7 +21,7 @@ struct cbmem_cons { u32 size_dont_access_after_boot; u32 cursor; - u8 body[0]; + u8 body[]; } __packed; #define CURSOR_MASK ((1 << 28) - 1) diff --git a/drivers/firmware/google/vpd.c b/drivers/firmware/google/vpd.c index db0812263d46..d23c5c69ab52 100644 --- a/drivers/firmware/google/vpd.c +++ b/drivers/firmware/google/vpd.c @@ -32,7 +32,7 @@ struct vpd_cbmem { u32 version; u32 ro_size; u32 rw_size; - u8 blob[0]; + u8 blob[]; }; struct vpd_section { diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c index 96758b71a8db..7127a04bca19 100644 --- a/drivers/firmware/iscsi_ibft.c +++ b/drivers/firmware/iscsi_ibft.c @@ -104,7 +104,7 @@ struct ibft_control { u16 tgt0_off; u16 nic1_off; u16 tgt1_off; - u16 expansion[0]; + u16 expansion[]; } __attribute__((__packed__)); struct ibft_initiator { diff --git a/drivers/firmware/pcdp.h b/drivers/firmware/pcdp.h index ce75d1da9e84..e02540571c52 100644 --- a/drivers/firmware/pcdp.h +++ b/drivers/firmware/pcdp.h @@ -103,6 +103,6 @@ struct pcdp { u8 creator_id[4]; u32 creator_rev; u32 num_uarts; - struct pcdp_uart uart[0]; /* actual size is num_uarts */ + struct pcdp_uart uart[]; /* actual size is num_uarts */ /* remainder of table is pcdp_device structures */ } __attribute__((packed)); diff --git a/drivers/hwtracing/stm/policy.c b/drivers/hwtracing/stm/policy.c index 4f932a419752..603b4a9969d3 100644 --- a/drivers/hwtracing/stm/policy.c +++ b/drivers/hwtracing/stm/policy.c @@ -34,7 +34,7 @@ struct stp_policy_node { unsigned int first_channel; unsigned int last_channel; /* this is the one that's exposed to the attributes */ - unsigned char priv[0]; + unsigned char priv[]; }; void *stp_policy_node_priv(struct stp_policy_node *pn) diff --git a/drivers/hwtracing/stm/stm.h b/drivers/hwtracing/stm/stm.h index 3569439d53bb..a9be49fc7a6b 100644 --- a/drivers/hwtracing/stm/stm.h +++ b/drivers/hwtracing/stm/stm.h @@ -23,7 +23,7 @@ void *stp_policy_node_priv(struct stp_policy_node *pn); struct stp_master { unsigned int nr_free; - unsigned long chan_map[0]; + unsigned long chan_map[]; }; struct stm_device { @@ -42,7 +42,7 @@ struct stm_device { const struct config_item_type *pdrv_node_type; /* master allocation */ spinlock_t mc_lock; - struct stp_master *masters[0]; + struct stp_master *masters[]; }; #define to_stm_device(_d) \ diff --git a/drivers/media/usb/pwc/pwc.h b/drivers/media/usb/pwc/pwc.h index 3362962d0d00..b02a3c7b7742 100644 --- a/drivers/media/usb/pwc/pwc.h +++ b/drivers/media/usb/pwc/pwc.h @@ -193,7 +193,7 @@ struct pwc_raw_frame { decompressor) */ __u8 cmd[4]; /* the four byte of the command (in case of nala, only the first 3 bytes is filled) */ - __u8 rawframe[0]; /* frame_size = H / 4 * vbandlength */ + __u8 rawframe[]; /* frame_size = H / 4 * vbandlength */ } __packed; /* intermediate buffers with raw data from the USB cam */ diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c index db8cdf5272c1..e9cacc27d980 100644 --- a/drivers/mfd/mt6360-core.c +++ b/drivers/mfd/mt6360-core.c @@ -412,6 +412,7 @@ MODULE_DEVICE_TABLE(of, mt6360_pmu_of_id); static struct i2c_driver mt6360_pmu_driver = { .driver = { + .name = "mt6360_pmu", .pm = &mt6360_pmu_pm_ops, .of_match_table = of_match_ptr(mt6360_pmu_of_id), }, diff --git a/drivers/net/bareudp.c b/drivers/net/bareudp.c index efd1a1d1f35e..5d3c691a1c66 100644 --- a/drivers/net/bareudp.c +++ b/drivers/net/bareudp.c @@ -552,6 +552,8 @@ static int bareudp_validate(struct nlattr *tb[], struct nlattr *data[], static int bareudp2info(struct nlattr *data[], struct bareudp_conf *conf, struct netlink_ext_ack *extack) { + memset(conf, 0, sizeof(*conf)); + if (!data[IFLA_BAREUDP_PORT]) { NL_SET_ERR_MSG(extack, "port not specified"); return -EINVAL; diff --git a/drivers/net/can/peak_canfd/peak_pciefd_main.c b/drivers/net/can/peak_canfd/peak_pciefd_main.c index d08a3d559114..6ad83a881039 100644 --- a/drivers/net/can/peak_canfd/peak_pciefd_main.c +++ b/drivers/net/can/peak_canfd/peak_pciefd_main.c @@ -146,7 +146,7 @@ struct pciefd_rx_dma { __le32 irq_status; __le32 sys_time_low; __le32 sys_time_high; - struct pucan_rx_msg msg[0]; + struct pucan_rx_msg msg[]; } __packed __aligned(4); /* Tx Link record */ @@ -194,7 +194,7 @@ struct pciefd_board { struct pci_dev *pci_dev; int can_count; spinlock_t cmd_lock; /* 64-bits cmds must be atomic */ - struct pciefd_can *can[0]; /* array of network devices */ + struct pciefd_can *can[]; /* array of network devices */ }; /* supported device ids. */ diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index d9fa4600f745..4b2de08137be 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -151,10 +151,8 @@ static int e1000_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid); static void e1000_restore_vlan(struct e1000_adapter *adapter); -#ifdef CONFIG_PM -static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); -static int e1000_resume(struct pci_dev *pdev); -#endif +static int __maybe_unused e1000_suspend(struct device *dev); +static int __maybe_unused e1000_resume(struct device *dev); static void e1000_shutdown(struct pci_dev *pdev); #ifdef CONFIG_NET_POLL_CONTROLLER @@ -179,16 +177,16 @@ static const struct pci_error_handlers e1000_err_handler = { .resume = e1000_io_resume, }; +static SIMPLE_DEV_PM_OPS(e1000_pm_ops, e1000_suspend, e1000_resume); + static struct pci_driver e1000_driver = { .name = e1000_driver_name, .id_table = e1000_pci_tbl, .probe = e1000_probe, .remove = e1000_remove, -#ifdef CONFIG_PM - /* Power Management Hooks */ - .suspend = e1000_suspend, - .resume = e1000_resume, -#endif + .driver = { + .pm = &e1000_pm_ops, + }, .shutdown = e1000_shutdown, .err_handler = &e1000_err_handler }; @@ -5060,9 +5058,6 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) struct e1000_hw *hw = &adapter->hw; u32 ctrl, ctrl_ext, rctl, status; u32 wufc = adapter->wol; -#ifdef CONFIG_PM - int retval = 0; -#endif netif_device_detach(netdev); @@ -5076,12 +5071,6 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) e1000_down(adapter); } -#ifdef CONFIG_PM - retval = pci_save_state(pdev); - if (retval) - return retval; -#endif - status = er32(STATUS); if (status & E1000_STATUS_LU) wufc &= ~E1000_WUFC_LNKC; @@ -5142,37 +5131,26 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) return 0; } -#ifdef CONFIG_PM -static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) +static int __maybe_unused e1000_suspend(struct device *dev) { int retval; + struct pci_dev *pdev = to_pci_dev(dev); bool wake; retval = __e1000_shutdown(pdev, &wake); - if (retval) - return retval; - - if (wake) { - pci_prepare_to_sleep(pdev); - } else { - pci_wake_from_d3(pdev, false); - pci_set_power_state(pdev, PCI_D3hot); - } + device_set_wakeup_enable(dev, wake); - return 0; + return retval; } -static int e1000_resume(struct pci_dev *pdev) +static int __maybe_unused e1000_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); struct e1000_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; u32 err; - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - pci_save_state(pdev); - if (adapter->need_ioport) err = pci_enable_device(pdev); else @@ -5209,7 +5187,6 @@ static int e1000_resume(struct pci_dev *pdev) return 0; } -#endif static void e1000_shutdown(struct pci_dev *pdev) { diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index a279f4fa9962..6f6479ca1267 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -6349,7 +6349,6 @@ fl_out: pm_runtime_put_sync(netdev->dev.parent); } -#ifdef CONFIG_PM_SLEEP /* S0ix implementation */ static void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter) { @@ -6571,7 +6570,6 @@ static void e1000e_s0ix_exit_flow(struct e1000_adapter *adapter) mac_data &= ~E1000_CTRL_EXT_FORCE_SMBUS; ew32(CTRL_EXT, mac_data); } -#endif /* CONFIG_PM_SLEEP */ static int e1000e_pm_freeze(struct device *dev) { @@ -6611,11 +6609,17 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) struct net_device *netdev = pci_get_drvdata(pdev); struct e1000_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; - u32 ctrl, ctrl_ext, rctl, status; - /* Runtime suspend should only enable wakeup for link changes */ - u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; + u32 ctrl, ctrl_ext, rctl, status, wufc; int retval = 0; + /* Runtime suspend should only enable wakeup for link changes */ + if (runtime) + wufc = E1000_WUFC_LNKC; + else if (device_may_wakeup(&pdev->dev)) + wufc = adapter->wol; + else + wufc = 0; + status = er32(STATUS); if (status & E1000_STATUS_LU) wufc &= ~E1000_WUFC_LNKC; @@ -6672,7 +6676,7 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) if (adapter->hw.phy.type == e1000_phy_igp_3) { e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); } else if (hw->mac.type >= e1000_pch_lpt) { - if (!(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC))) + if (wufc && !(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC))) /* ULP does not support wake from unicast, multicast * or broadcast. */ @@ -6869,7 +6873,6 @@ err_irq: return rc; } -#ifdef CONFIG_PM static int __e1000_resume(struct pci_dev *pdev) { struct net_device *netdev = pci_get_drvdata(pdev); @@ -6935,8 +6938,7 @@ static int __e1000_resume(struct pci_dev *pdev) return 0; } -#ifdef CONFIG_PM_SLEEP -static int e1000e_pm_suspend(struct device *dev) +static __maybe_unused int e1000e_pm_suspend(struct device *dev) { struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); struct e1000_adapter *adapter = netdev_priv(netdev); @@ -6960,7 +6962,7 @@ static int e1000e_pm_suspend(struct device *dev) return rc; } -static int e1000e_pm_resume(struct device *dev) +static __maybe_unused int e1000e_pm_resume(struct device *dev) { struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); struct e1000_adapter *adapter = netdev_priv(netdev); @@ -6979,9 +6981,8 @@ static int e1000e_pm_resume(struct device *dev) return e1000e_pm_thaw(dev); } -#endif /* CONFIG_PM_SLEEP */ -static int e1000e_pm_runtime_idle(struct device *dev) +static __maybe_unused int e1000e_pm_runtime_idle(struct device *dev) { struct net_device *netdev = dev_get_drvdata(dev); struct e1000_adapter *adapter = netdev_priv(netdev); @@ -6997,7 +6998,7 @@ static int e1000e_pm_runtime_idle(struct device *dev) return -EBUSY; } -static int e1000e_pm_runtime_resume(struct device *dev) +static __maybe_unused int e1000e_pm_runtime_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); @@ -7014,7 +7015,7 @@ static int e1000e_pm_runtime_resume(struct device *dev) return rc; } -static int e1000e_pm_runtime_suspend(struct device *dev) +static __maybe_unused int e1000e_pm_runtime_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); @@ -7039,7 +7040,6 @@ static int e1000e_pm_runtime_suspend(struct device *dev) return 0; } -#endif /* CONFIG_PM */ static void e1000_shutdown(struct pci_dev *pdev) { diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 5d4ec95be869..24f4d8e0da98 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -5983,8 +5983,8 @@ static int mvpp2_remove(struct platform_device *pdev) { struct mvpp2 *priv = platform_get_drvdata(pdev); struct fwnode_handle *fwnode = pdev->dev.fwnode; + int i = 0, poolnum = MVPP2_BM_POOLS_NUM; struct fwnode_handle *port_fwnode; - int i = 0; mvpp2_dbgfs_cleanup(priv); @@ -5998,7 +5998,10 @@ static int mvpp2_remove(struct platform_device *pdev) destroy_workqueue(priv->stats_queue); - for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) { + if (priv->percpu_pools) + poolnum = mvpp2_get_nrxqs(priv) * 2; + + for (i = 0; i < poolnum; i++) { struct mvpp2_bm_pool *bm_pool = &priv->bm_pools[i]; mvpp2_bm_pool_destroy(&pdev->dev, priv, bm_pool); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 5ffa32b75e5f..55af877763ed 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -978,8 +978,10 @@ int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu, lossy = !(pfc || pause_en); thres_cells = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, mtu); + mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, &thres_cells); delay_cells = mlxsw_sp_pg_buf_delay_get(mlxsw_sp, mtu, delay, pfc, pause_en); + mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, &delay_cells); total_cells = thres_cells + delay_cells; taken_headroom_cells += total_cells; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index 6f96ca50c9ba..6e87457dd635 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -374,6 +374,19 @@ mlxsw_sp_port_vlan_find_by_vid(const struct mlxsw_sp_port *mlxsw_sp_port, return NULL; } +static inline void +mlxsw_sp_port_headroom_8x_adjust(const struct mlxsw_sp_port *mlxsw_sp_port, + u16 *p_size) +{ + /* Ports with eight lanes use two headroom buffers between which the + * configured headroom size is split. Therefore, multiply the calculated + * headroom size by two. + */ + if (mlxsw_sp_port->mapping.width != 8) + return; + *p_size *= 2; +} + enum mlxsw_sp_flood_type { MLXSW_SP_FLOOD_TYPE_UC, MLXSW_SP_FLOOD_TYPE_BC, diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 21bfb2f6a6f0..f25a8b084b4b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -312,6 +312,7 @@ static int mlxsw_sp_port_pb_init(struct mlxsw_sp_port *mlxsw_sp_port) if (i == MLXSW_SP_PB_UNUSED) continue; + mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, &size); mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, i, size); } mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c index 304eb8c3d8bd..f843545d3478 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c @@ -782,6 +782,7 @@ mlxsw_sp_span_port_buffer_update(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu) speed = 0; buffsize = mlxsw_sp_span_buffsize_get(mlxsw_sp, speed, mtu); + mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, (u16 *) &buffsize); mlxsw_reg_sbib_pack(sbib_pl, mlxsw_sp_port->local_port, buffsize); return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl); } diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index c5c5c688b7e2..f1711ac86d0c 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -3091,6 +3091,8 @@ static const struct pci_device_id lan743x_pcidev_tbl[] = { { 0, } }; +MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl); + static struct pci_driver lan743x_pcidev_driver = { .name = DRIVER_NAME, .id_table = lan743x_pcidev_tbl, diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h index e1d097e250ae..31478c0cff87 100644 --- a/drivers/oprofile/cpu_buffer.h +++ b/drivers/oprofile/cpu_buffer.h @@ -33,7 +33,7 @@ void flush_cpu_work(void); struct op_sample { unsigned long eip; unsigned long event; - unsigned long data[0]; + unsigned long data[]; }; struct op_entry; diff --git a/drivers/phy/samsung/phy-samsung-usb2.h b/drivers/phy/samsung/phy-samsung-usb2.h index 2c1a7d71142b..77fb23bc218f 100644 --- a/drivers/phy/samsung/phy-samsung-usb2.h +++ b/drivers/phy/samsung/phy-samsung-usb2.h @@ -43,7 +43,7 @@ struct samsung_usb2_phy_driver { struct regmap *reg_pmu; struct regmap *reg_sys; spinlock_t lock; - struct samsung_usb2_phy_instance instances[0]; + struct samsung_usb2_phy_instance instances[]; }; struct samsung_usb2_common_phy { diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index 0e90c5d4bb2b..eb8ed28533f8 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -39,7 +39,7 @@ struct rio_id_table { u16 start; /* logical minimal id */ u32 max; /* max number of IDs in table */ spinlock_t lock; - unsigned long table[0]; + unsigned long table[]; }; static int next_destid = 0; diff --git a/drivers/soc/ti/knav_qmss.h b/drivers/soc/ti/knav_qmss.h index 038aec352df7..a01eda720bf6 100644 --- a/drivers/soc/ti/knav_qmss.h +++ b/drivers/soc/ti/knav_qmss.h @@ -67,7 +67,7 @@ struct knav_reg_config { u32 link_ram_size0; u32 link_ram_base1; u32 __pad2[2]; - u32 starvation[0]; + u32 starvation[]; }; struct knav_reg_region { diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h index 3041092e84b3..449680a61569 100644 --- a/drivers/w1/w1_netlink.h +++ b/drivers/w1/w1_netlink.h @@ -73,7 +73,7 @@ struct w1_netlink_msg __u32 res; } mst; } id; - __u8 data[0]; + __u8 data[]; }; /** @@ -122,7 +122,7 @@ struct w1_netlink_cmd __u8 cmd; __u8 res; __u16 len; - __u8 data[0]; + __u8 data[]; }; #ifdef __KERNEL__ diff --git a/fs/afs/dir.c b/fs/afs/dir.c index aa1d34141ea3..3e3c2bf0a722 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -648,7 +648,7 @@ static void afs_do_lookup_success(struct afs_operation *op) vp = &op->file[0]; abort_code = vp->scb.status.abort_code; if (abort_code != 0) { - op->abort_code = abort_code; + op->ac.abort_code = abort_code; op->error = afs_abort_to_error(abort_code); } break; @@ -696,10 +696,11 @@ static const struct afs_operation_ops afs_inline_bulk_status_operation = { .success = afs_do_lookup_success, }; -static const struct afs_operation_ops afs_fetch_status_operation = { +static const struct afs_operation_ops afs_lookup_fetch_status_operation = { .issue_afs_rpc = afs_fs_fetch_status, .issue_yfs_rpc = yfs_fs_fetch_status, .success = afs_do_lookup_success, + .aborted = afs_check_for_remote_deletion, }; /* @@ -1236,6 +1237,17 @@ void afs_d_release(struct dentry *dentry) _enter("%pd", dentry); } +void afs_check_for_remote_deletion(struct afs_operation *op) +{ + struct afs_vnode *vnode = op->file[0].vnode; + + switch (op->ac.abort_code) { + case VNOVNODE: + set_bit(AFS_VNODE_DELETED, &vnode->flags); + afs_break_callback(vnode, afs_cb_break_for_deleted); + } +} + /* * Create a new inode for create/mkdir/symlink */ @@ -1268,7 +1280,7 @@ static void afs_vnode_new_inode(struct afs_operation *op) static void afs_create_success(struct afs_operation *op) { _enter("op=%08x", op->debug_id); - afs_check_for_remote_deletion(op, op->file[0].vnode); + op->ctime = op->file[0].scb.status.mtime_client; afs_vnode_commit_status(op, &op->file[0]); afs_update_dentry_version(op, &op->file[0], op->dentry); afs_vnode_new_inode(op); @@ -1302,6 +1314,7 @@ static const struct afs_operation_ops afs_mkdir_operation = { .issue_afs_rpc = afs_fs_make_dir, .issue_yfs_rpc = yfs_fs_make_dir, .success = afs_create_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_create_edit_dir, .put = afs_create_put, }; @@ -1325,6 +1338,7 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) afs_op_set_vnode(op, 0, dvnode); op->file[0].dv_delta = 1; + op->file[0].update_ctime = true; op->dentry = dentry; op->create.mode = S_IFDIR | mode; op->create.reason = afs_edit_dir_for_mkdir; @@ -1350,7 +1364,7 @@ static void afs_dir_remove_subdir(struct dentry *dentry) static void afs_rmdir_success(struct afs_operation *op) { _enter("op=%08x", op->debug_id); - afs_check_for_remote_deletion(op, op->file[0].vnode); + op->ctime = op->file[0].scb.status.mtime_client; afs_vnode_commit_status(op, &op->file[0]); afs_update_dentry_version(op, &op->file[0], op->dentry); } @@ -1382,6 +1396,7 @@ static const struct afs_operation_ops afs_rmdir_operation = { .issue_afs_rpc = afs_fs_remove_dir, .issue_yfs_rpc = yfs_fs_remove_dir, .success = afs_rmdir_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_rmdir_edit_dir, .put = afs_rmdir_put, }; @@ -1404,6 +1419,7 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry) afs_op_set_vnode(op, 0, dvnode); op->file[0].dv_delta = 1; + op->file[0].update_ctime = true; op->dentry = dentry; op->ops = &afs_rmdir_operation; @@ -1479,7 +1495,8 @@ static void afs_dir_remove_link(struct afs_operation *op) static void afs_unlink_success(struct afs_operation *op) { _enter("op=%08x", op->debug_id); - afs_check_for_remote_deletion(op, op->file[0].vnode); + op->ctime = op->file[0].scb.status.mtime_client; + afs_check_dir_conflict(op, &op->file[0]); afs_vnode_commit_status(op, &op->file[0]); afs_vnode_commit_status(op, &op->file[1]); afs_update_dentry_version(op, &op->file[0], op->dentry); @@ -1511,6 +1528,7 @@ static const struct afs_operation_ops afs_unlink_operation = { .issue_afs_rpc = afs_fs_remove_file, .issue_yfs_rpc = yfs_fs_remove_file, .success = afs_unlink_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_unlink_edit_dir, .put = afs_unlink_put, }; @@ -1537,6 +1555,7 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) afs_op_set_vnode(op, 0, dvnode); op->file[0].dv_delta = 1; + op->file[0].update_ctime = true; /* Try to make sure we have a callback promise on the victim. */ ret = afs_validate(vnode, op->key); @@ -1561,9 +1580,25 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) spin_unlock(&dentry->d_lock); op->file[1].vnode = vnode; + op->file[1].update_ctime = true; + op->file[1].op_unlinked = true; op->dentry = dentry; op->ops = &afs_unlink_operation; - return afs_do_sync_operation(op); + afs_begin_vnode_operation(op); + afs_wait_for_operation(op); + + /* If there was a conflict with a third party, check the status of the + * unlinked vnode. + */ + if (op->error == 0 && (op->flags & AFS_OPERATION_DIR_CONFLICT)) { + op->file[1].update_ctime = false; + op->fetch_status.which = 1; + op->ops = &afs_fetch_status_operation; + afs_begin_vnode_operation(op); + afs_wait_for_operation(op); + } + + return afs_put_operation(op); error: return afs_put_operation(op); @@ -1573,6 +1608,7 @@ static const struct afs_operation_ops afs_create_operation = { .issue_afs_rpc = afs_fs_create_file, .issue_yfs_rpc = yfs_fs_create_file, .success = afs_create_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_create_edit_dir, .put = afs_create_put, }; @@ -1601,6 +1637,7 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode, afs_op_set_vnode(op, 0, dvnode); op->file[0].dv_delta = 1; + op->file[0].update_ctime = true; op->dentry = dentry; op->create.mode = S_IFREG | mode; @@ -1620,6 +1657,7 @@ static void afs_link_success(struct afs_operation *op) struct afs_vnode_param *vp = &op->file[1]; _enter("op=%08x", op->debug_id); + op->ctime = dvp->scb.status.mtime_client; afs_vnode_commit_status(op, dvp); afs_vnode_commit_status(op, vp); afs_update_dentry_version(op, dvp, op->dentry); @@ -1640,6 +1678,7 @@ static const struct afs_operation_ops afs_link_operation = { .issue_afs_rpc = afs_fs_link, .issue_yfs_rpc = yfs_fs_link, .success = afs_link_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_create_edit_dir, .put = afs_link_put, }; @@ -1672,6 +1711,8 @@ static int afs_link(struct dentry *from, struct inode *dir, afs_op_set_vnode(op, 0, dvnode); afs_op_set_vnode(op, 1, vnode); op->file[0].dv_delta = 1; + op->file[0].update_ctime = true; + op->file[1].update_ctime = true; op->dentry = dentry; op->dentry_2 = from; @@ -1689,6 +1730,7 @@ static const struct afs_operation_ops afs_symlink_operation = { .issue_afs_rpc = afs_fs_symlink, .issue_yfs_rpc = yfs_fs_symlink, .success = afs_create_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_create_edit_dir, .put = afs_create_put, }; @@ -1740,9 +1782,13 @@ static void afs_rename_success(struct afs_operation *op) { _enter("op=%08x", op->debug_id); + op->ctime = op->file[0].scb.status.mtime_client; + afs_check_dir_conflict(op, &op->file[1]); afs_vnode_commit_status(op, &op->file[0]); - if (op->file[1].vnode != op->file[0].vnode) + if (op->file[1].vnode != op->file[0].vnode) { + op->ctime = op->file[1].scb.status.mtime_client; afs_vnode_commit_status(op, &op->file[1]); + } } static void afs_rename_edit_dir(struct afs_operation *op) @@ -1860,6 +1906,8 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry, afs_op_set_vnode(op, 1, new_dvnode); /* May be same as orig_dvnode */ op->file[0].dv_delta = 1; op->file[1].dv_delta = 1; + op->file[0].update_ctime = true; + op->file[1].update_ctime = true; op->dentry = old_dentry; op->dentry_2 = new_dentry; diff --git a/fs/afs/dir_silly.c b/fs/afs/dir_silly.c index b14e3d9a25e2..04f75a44f243 100644 --- a/fs/afs/dir_silly.c +++ b/fs/afs/dir_silly.c @@ -16,6 +16,7 @@ static void afs_silly_rename_success(struct afs_operation *op) { _enter("op=%08x", op->debug_id); + afs_check_dir_conflict(op, &op->file[0]); afs_vnode_commit_status(op, &op->file[0]); } @@ -69,6 +70,11 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode return PTR_ERR(op); afs_op_set_vnode(op, 0, dvnode); + afs_op_set_vnode(op, 1, dvnode); + op->file[0].dv_delta = 1; + op->file[1].dv_delta = 1; + op->file[0].update_ctime = true; + op->file[1].update_ctime = true; op->dentry = old; op->dentry_2 = new; @@ -129,6 +135,7 @@ int afs_sillyrename(struct afs_vnode *dvnode, struct afs_vnode *vnode, switch (ret) { case 0: /* The rename succeeded. */ + set_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags); d_move(dentry, sdentry); break; case -ERESTARTSYS: @@ -148,19 +155,11 @@ out: static void afs_silly_unlink_success(struct afs_operation *op) { - struct afs_vnode *vnode = op->file[1].vnode; - _enter("op=%08x", op->debug_id); - afs_check_for_remote_deletion(op, op->file[0].vnode); + afs_check_dir_conflict(op, &op->file[0]); afs_vnode_commit_status(op, &op->file[0]); afs_vnode_commit_status(op, &op->file[1]); afs_update_dentry_version(op, &op->file[0], op->dentry); - - drop_nlink(&vnode->vfs_inode); - if (vnode->vfs_inode.i_nlink == 0) { - set_bit(AFS_VNODE_DELETED, &vnode->flags); - clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); - } } static void afs_silly_unlink_edit_dir(struct afs_operation *op) @@ -181,6 +180,7 @@ static const struct afs_operation_ops afs_silly_unlink_operation = { .issue_afs_rpc = afs_fs_remove_file, .issue_yfs_rpc = yfs_fs_remove_file, .success = afs_silly_unlink_success, + .aborted = afs_check_for_remote_deletion, .edit_dir = afs_silly_unlink_edit_dir, }; @@ -200,12 +200,30 @@ static int afs_do_silly_unlink(struct afs_vnode *dvnode, struct afs_vnode *vnode afs_op_set_vnode(op, 0, dvnode); afs_op_set_vnode(op, 1, vnode); + op->file[0].dv_delta = 1; + op->file[0].update_ctime = true; + op->file[1].op_unlinked = true; + op->file[1].update_ctime = true; op->dentry = dentry; op->ops = &afs_silly_unlink_operation; trace_afs_silly_rename(vnode, true); - return afs_do_sync_operation(op); + afs_begin_vnode_operation(op); + afs_wait_for_operation(op); + + /* If there was a conflict with a third party, check the status of the + * unlinked vnode. + */ + if (op->error == 0 && (op->flags & AFS_OPERATION_DIR_CONFLICT)) { + op->file[1].update_ctime = false; + op->fetch_status.which = 1; + op->ops = &afs_fetch_status_operation; + afs_begin_vnode_operation(op); + afs_wait_for_operation(op); + } + + return afs_put_operation(op); } /* diff --git a/fs/afs/file.c b/fs/afs/file.c index 506c47471b42..6f6ed1605cfe 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -225,7 +225,6 @@ static void afs_fetch_data_success(struct afs_operation *op) struct afs_vnode *vnode = op->file[0].vnode; _enter("op=%08x", op->debug_id); - afs_check_for_remote_deletion(op, vnode); afs_vnode_commit_status(op, &op->file[0]); afs_stat_v(vnode, n_fetches); atomic_long_add(op->fetch.req->actual_len, &op->net->n_fetch_bytes); @@ -240,6 +239,7 @@ static const struct afs_operation_ops afs_fetch_data_operation = { .issue_afs_rpc = afs_fs_fetch_data, .issue_yfs_rpc = yfs_fs_fetch_data, .success = afs_fetch_data_success, + .aborted = afs_check_for_remote_deletion, .put = afs_fetch_data_put, }; diff --git a/fs/afs/flock.c b/fs/afs/flock.c index 71eea2a908c7..ffb8575345ca 100644 --- a/fs/afs/flock.c +++ b/fs/afs/flock.c @@ -175,10 +175,7 @@ static void afs_kill_lockers_enoent(struct afs_vnode *vnode) static void afs_lock_success(struct afs_operation *op) { - struct afs_vnode *vnode = op->file[0].vnode; - _enter("op=%08x", op->debug_id); - afs_check_for_remote_deletion(op, vnode); afs_vnode_commit_status(op, &op->file[0]); } @@ -186,6 +183,7 @@ static const struct afs_operation_ops afs_set_lock_operation = { .issue_afs_rpc = afs_fs_set_lock, .issue_yfs_rpc = yfs_fs_set_lock, .success = afs_lock_success, + .aborted = afs_check_for_remote_deletion, }; /* diff --git a/fs/afs/fs_operation.c b/fs/afs/fs_operation.c index 2d2dff5688a4..c264839b2fd0 100644 --- a/fs/afs/fs_operation.c +++ b/fs/afs/fs_operation.c @@ -187,9 +187,17 @@ void afs_wait_for_operation(struct afs_operation *op) op->error = afs_wait_for_call_to_complete(op->call, &op->ac); } - if (op->error == 0) { + switch (op->error) { + case 0: _debug("success"); op->ops->success(op); + break; + case -ECONNABORTED: + if (op->ops->aborted) + op->ops->aborted(op); + break; + default: + break; } afs_end_vnode_operation(op); diff --git a/fs/afs/inode.c b/fs/afs/inode.c index cd0a0060950b..1d13d2e882ad 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -165,9 +165,11 @@ static void afs_apply_status(struct afs_operation *op, { struct afs_file_status *status = &vp->scb.status; struct afs_vnode *vnode = vp->vnode; + struct inode *inode = &vnode->vfs_inode; struct timespec64 t; umode_t mode; bool data_changed = false; + bool change_size = vp->set_size; _enter("{%llx:%llu.%u} %s", vp->fid.vid, vp->fid.vnode, vp->fid.unique, @@ -186,25 +188,25 @@ static void afs_apply_status(struct afs_operation *op, } if (status->nlink != vnode->status.nlink) - set_nlink(&vnode->vfs_inode, status->nlink); + set_nlink(inode, status->nlink); if (status->owner != vnode->status.owner) - vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner); + inode->i_uid = make_kuid(&init_user_ns, status->owner); if (status->group != vnode->status.group) - vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group); + inode->i_gid = make_kgid(&init_user_ns, status->group); if (status->mode != vnode->status.mode) { - mode = vnode->vfs_inode.i_mode; + mode = inode->i_mode; mode &= ~S_IALLUGO; mode |= status->mode; - WRITE_ONCE(vnode->vfs_inode.i_mode, mode); + WRITE_ONCE(inode->i_mode, mode); } t = status->mtime_client; - vnode->vfs_inode.i_ctime = t; - vnode->vfs_inode.i_mtime = t; - vnode->vfs_inode.i_atime = t; + inode->i_mtime = t; + if (vp->update_ctime) + inode->i_ctime = op->ctime; if (vnode->status.data_version != status->data_version) data_changed = true; @@ -226,6 +228,7 @@ static void afs_apply_status(struct afs_operation *op, } else { set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); } + change_size = true; } else if (vnode->status.type == AFS_FTYPE_DIR) { /* Expected directory change is handled elsewhere so * that we can locally edit the directory and save on a @@ -233,11 +236,22 @@ static void afs_apply_status(struct afs_operation *op, */ if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) data_changed = false; + change_size = true; } if (data_changed) { - inode_set_iversion_raw(&vnode->vfs_inode, status->data_version); - afs_set_i_size(vnode, status->size); + inode_set_iversion_raw(inode, status->data_version); + + /* Only update the size if the data version jumped. If the + * file is being modified locally, then we might have our own + * idea of what the size should be that's not the same as + * what's on the server. + */ + if (change_size) { + afs_set_i_size(vnode, status->size); + inode->i_ctime = t; + inode->i_atime = t; + } } } @@ -267,32 +281,39 @@ void afs_vnode_commit_status(struct afs_operation *op, struct afs_vnode_param *v _enter(""); - ASSERTCMP(op->error, ==, 0); - write_seqlock(&vnode->cb_lock); if (vp->scb.have_error) { + /* A YFS server will return this from RemoveFile2 and AFS and + * YFS will return this from InlineBulkStatus. + */ if (vp->scb.status.abort_code == VNOVNODE) { set_bit(AFS_VNODE_DELETED, &vnode->flags); clear_nlink(&vnode->vfs_inode); __afs_break_callback(vnode, afs_cb_break_for_deleted); + op->flags &= ~AFS_OPERATION_DIR_CONFLICT; } - } else { - if (vp->scb.have_status) - afs_apply_status(op, vp); + } else if (vp->scb.have_status) { + afs_apply_status(op, vp); if (vp->scb.have_cb) afs_apply_callback(op, vp); + } else if (vp->op_unlinked && !(op->flags & AFS_OPERATION_DIR_CONFLICT)) { + drop_nlink(&vnode->vfs_inode); + if (vnode->vfs_inode.i_nlink == 0) { + set_bit(AFS_VNODE_DELETED, &vnode->flags); + __afs_break_callback(vnode, afs_cb_break_for_deleted); + } } write_sequnlock(&vnode->cb_lock); - if (op->error == 0 && vp->scb.have_status) + if (vp->scb.have_status) afs_cache_permit(vnode, op->key, vp->cb_break_before, &vp->scb); } static void afs_fetch_status_success(struct afs_operation *op) { - struct afs_vnode_param *vp = &op->file[0]; + struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; struct afs_vnode *vnode = vp->vnode; int ret; @@ -306,10 +327,11 @@ static void afs_fetch_status_success(struct afs_operation *op) } } -static const struct afs_operation_ops afs_fetch_status_operation = { +const struct afs_operation_ops afs_fetch_status_operation = { .issue_afs_rpc = afs_fs_fetch_status, .issue_yfs_rpc = yfs_fs_fetch_status, .success = afs_fetch_status_success, + .aborted = afs_check_for_remote_deletion, }; /* @@ -716,6 +738,9 @@ int afs_getattr(const struct path *path, struct kstat *stat, do { read_seqbegin_or_lock(&vnode->cb_lock, &seq); generic_fillattr(inode, stat); + if (test_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags) && + stat->nlink > 0) + stat->nlink -= 1; } while (need_seqretry(&vnode->cb_lock, seq)); done_seqretry(&vnode->cb_lock, seq); @@ -785,7 +810,15 @@ void afs_evict_inode(struct inode *inode) static void afs_setattr_success(struct afs_operation *op) { + struct inode *inode = &op->file[0].vnode->vfs_inode; + afs_vnode_commit_status(op, &op->file[0]); + if (op->setattr.attr->ia_valid & ATTR_SIZE) { + loff_t i_size = inode->i_size, size = op->setattr.attr->ia_size; + if (size > i_size) + pagecache_isize_extended(inode, i_size, size); + truncate_pagecache(inode, size); + } } static const struct afs_operation_ops afs_setattr_operation = { @@ -801,17 +834,31 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) { struct afs_operation *op; struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); + int ret; _enter("{%llx:%llu},{n=%pd},%x", vnode->fid.vid, vnode->fid.vnode, dentry, attr->ia_valid); if (!(attr->ia_valid & (ATTR_SIZE | ATTR_MODE | ATTR_UID | ATTR_GID | - ATTR_MTIME))) { + ATTR_MTIME | ATTR_MTIME_SET | ATTR_TIMES_SET | + ATTR_TOUCH))) { _leave(" = 0 [unsupported]"); return 0; } + if (attr->ia_valid & ATTR_SIZE) { + if (!S_ISREG(vnode->vfs_inode.i_mode)) + return -EISDIR; + + ret = inode_newsize_ok(&vnode->vfs_inode, attr->ia_size); + if (ret) + return ret; + + if (attr->ia_size == i_size_read(&vnode->vfs_inode)) + attr->ia_valid &= ~ATTR_SIZE; + } + /* flush any dirty data outstanding on a regular file */ if (S_ISREG(vnode->vfs_inode.i_mode)) filemap_write_and_wait(vnode->vfs_inode.i_mapping); @@ -825,8 +872,12 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) afs_op_set_vnode(op, 0, vnode); op->setattr.attr = attr; - if (attr->ia_valid & ATTR_SIZE) + if (attr->ia_valid & ATTR_SIZE) { op->file[0].dv_delta = 1; + op->file[0].set_size = true; + } + op->ctime = attr->ia_ctime; + op->file[0].update_ctime = 1; op->ops = &afs_setattr_operation; return afs_do_sync_operation(op); diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 0c9806ef2a19..573a5922c3bb 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -634,6 +634,7 @@ struct afs_vnode { #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ +#define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */ struct list_head wb_keys; /* List of keys available for writeback */ struct list_head pending_locks; /* locks waiting to be granted */ @@ -744,8 +745,11 @@ struct afs_vnode_param { afs_dataversion_t dv_before; /* Data version before the call */ unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ u8 dv_delta; /* Expected change in data version */ - bool put_vnode; /* T if we have a ref on the vnode */ - bool need_io_lock; /* T if we need the I/O lock on this */ + bool put_vnode:1; /* T if we have a ref on the vnode */ + bool need_io_lock:1; /* T if we need the I/O lock on this */ + bool update_ctime:1; /* Need to update the ctime */ + bool set_size:1; /* Must update i_size */ + bool op_unlinked:1; /* True if file was unlinked by op */ }; /* @@ -766,9 +770,9 @@ struct afs_operation { struct dentry *dentry; /* Dentry to be altered */ struct dentry *dentry_2; /* Second dentry to be altered */ struct timespec64 mtime; /* Modification time to record */ + struct timespec64 ctime; /* Change time to set */ short nr_files; /* Number of entries in file[], more_files */ short error; - unsigned int abort_code; unsigned int debug_id; unsigned int cb_v_break; /* Volume break counter before op */ @@ -837,6 +841,7 @@ struct afs_operation { #define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */ #define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */ #define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */ +#define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */ }; /* @@ -932,6 +937,7 @@ extern const struct address_space_operations afs_dir_aops; extern const struct dentry_operations afs_fs_dentry_operations; extern void afs_d_release(struct dentry *); +extern void afs_check_for_remote_deletion(struct afs_operation *); /* * dir_edit.c @@ -1063,6 +1069,8 @@ extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); /* * inode.c */ +extern const struct afs_operation_ops afs_fetch_status_operation; + extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *); extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); extern int afs_ilookup5_test_by_fid(struct inode *, void *); @@ -1435,7 +1443,6 @@ extern ssize_t afs_listxattr(struct dentry *, char *, size_t); /* * yfsclient.c */ -extern void yfs_fs_fetch_file_status(struct afs_operation *); extern void yfs_fs_fetch_data(struct afs_operation *); extern void yfs_fs_create_file(struct afs_operation *); extern void yfs_fs_make_dir(struct afs_operation *); @@ -1481,15 +1488,6 @@ static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) return &vnode->vfs_inode; } -static inline void afs_check_for_remote_deletion(struct afs_operation *op, - struct afs_vnode *vnode) -{ - if (op->error == -ENOENT) { - set_bit(AFS_VNODE_DELETED, &vnode->flags); - afs_break_callback(vnode, afs_cb_break_for_deleted); - } -} - /* * Note that a dentry got changed. We need to set d_fsdata to the data version * number derived from the result of the operation. It doesn't matter if @@ -1504,6 +1502,18 @@ static inline void afs_update_dentry_version(struct afs_operation *op, (void *)(unsigned long)dir_vp->scb.status.data_version; } +/* + * Check for a conflicting operation on a directory that we just unlinked from. + * If someone managed to sneak a link or an unlink in on the file we just + * unlinked, we won't be able to trust nlink on an AFS file (but not YFS). + */ +static inline void afs_check_dir_conflict(struct afs_operation *op, + struct afs_vnode_param *dvp) +{ + if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version) + op->flags |= AFS_OPERATION_DIR_CONFLICT; +} + static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) { trace_afs_io_error(call->debug_id, -EIO, where); diff --git a/fs/afs/misc.c b/fs/afs/misc.c index 52b19e9c1535..5334f1bd2bca 100644 --- a/fs/afs/misc.c +++ b/fs/afs/misc.c @@ -83,6 +83,7 @@ int afs_abort_to_error(u32 abort_code) case UAENOLCK: return -ENOLCK; case UAENOTEMPTY: return -ENOTEMPTY; case UAELOOP: return -ELOOP; + case UAEOVERFLOW: return -EOVERFLOW; case UAENOMEDIUM: return -ENOMEDIUM; case UAEDQUOT: return -EDQUOT; diff --git a/fs/afs/write.c b/fs/afs/write.c index 768497f82aee..7437806332d9 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -194,11 +194,11 @@ int afs_write_end(struct file *file, struct address_space *mapping, i_size = i_size_read(&vnode->vfs_inode); if (maybe_i_size > i_size) { - spin_lock(&vnode->wb_lock); + write_seqlock(&vnode->cb_lock); i_size = i_size_read(&vnode->vfs_inode); if (maybe_i_size > i_size) i_size_write(&vnode->vfs_inode, maybe_i_size); - spin_unlock(&vnode->wb_lock); + write_sequnlock(&vnode->cb_lock); } if (!PageUptodate(page)) { @@ -393,6 +393,7 @@ static void afs_store_data_success(struct afs_operation *op) { struct afs_vnode *vnode = op->file[0].vnode; + op->ctime = op->file[0].scb.status.mtime_client; afs_vnode_commit_status(op, &op->file[0]); if (op->error == 0) { afs_pages_written_back(vnode, op->store.first, op->store.last); @@ -491,6 +492,7 @@ static int afs_write_back_from_locked_page(struct address_space *mapping, unsigned long count, priv; unsigned n, offset, to, f, t; pgoff_t start, first, last; + loff_t i_size, end; int loop, ret; _enter(",%lx", primary_page->index); @@ -591,7 +593,12 @@ no_more: first = primary_page->index; last = first + count - 1; + end = (loff_t)last * PAGE_SIZE + to; + i_size = i_size_read(&vnode->vfs_inode); + _debug("write back %lx[%u..] to %lx[..%u]", first, offset, last, to); + if (end > i_size) + to = i_size & ~PAGE_MASK; ret = afs_store_data(mapping, first, last, offset, to); switch (ret) { @@ -844,6 +851,7 @@ vm_fault_t afs_page_mkwrite(struct vm_fault *vmf) vmf->page->index, priv); SetPagePrivate(vmf->page); set_page_private(vmf->page, priv); + file_update_time(file); sb_end_pagefault(inode->i_sb); return VM_FAULT_LOCKED; diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c index 52d5af5fcd44..8c24fdc899e3 100644 --- a/fs/afs/yfsclient.c +++ b/fs/afs/yfsclient.c @@ -330,29 +330,6 @@ static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp, } /* - * Deliver a reply that's a status, callback and volsync. - */ -static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call) -{ - struct afs_operation *op = call->op; - const __be32 *bp; - int ret; - - ret = afs_transfer_reply(call); - if (ret < 0) - return ret; - - /* unmarshall the reply once we've received all of it */ - bp = call->buffer; - xdr_decode_YFSFetchStatus(&bp, call, &op->file[0].scb); - xdr_decode_YFSCallBack(&bp, call, &op->file[0].scb); - xdr_decode_YFSVolSync(&bp, &op->volsync); - - _leave(" = 0 [done]"); - return 0; -} - -/* * Deliver reply data to operations that just return a file status and a volume * sync record. */ @@ -375,48 +352,6 @@ static int yfs_deliver_status_and_volsync(struct afs_call *call) } /* - * YFS.FetchStatus operation type - */ -static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = { - .name = "YFS.FetchStatus(vnode)", - .op = yfs_FS_FetchStatus, - .deliver = yfs_deliver_fs_status_cb_and_volsync, - .destructor = afs_flat_call_destructor, -}; - -/* - * Fetch the status information for a file. - */ -void yfs_fs_fetch_file_status(struct afs_operation *op) -{ - struct afs_vnode_param *vp = &op->file[0]; - struct afs_call *call; - __be32 *bp; - - _enter(",%x,{%llx:%llu},,", - key_serial(op->key), vp->fid.vid, vp->fid.vnode); - - call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchStatus_vnode, - sizeof(__be32) * 2 + - sizeof(struct yfs_xdr_YFSFid), - sizeof(struct yfs_xdr_YFSFetchStatus) + - sizeof(struct yfs_xdr_YFSCallBack) + - sizeof(struct yfs_xdr_YFSVolSync)); - if (!call) - return afs_op_nomem(op); - - /* marshall the parameters */ - bp = call->request; - bp = xdr_encode_u32(bp, YFSFETCHSTATUS); - bp = xdr_encode_u32(bp, 0); /* RPC flags */ - bp = xdr_encode_YFSFid(bp, &vp->fid); - yfs_check_req(call, bp); - - trace_afs_make_fs_call(call, &vp->fid); - afs_make_op_call(op, call, GFP_NOFS); -} - -/* * Deliver reply data to an YFS.FetchData64. */ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) @@ -1605,12 +1540,36 @@ void yfs_fs_release_lock(struct afs_operation *op) } /* + * Deliver a reply to YFS.FetchStatus + */ +static int yfs_deliver_fs_fetch_status(struct afs_call *call) +{ + struct afs_operation *op = call->op; + struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; + const __be32 *bp; + int ret; + + ret = afs_transfer_reply(call); + if (ret < 0) + return ret; + + /* unmarshall the reply once we've received all of it */ + bp = call->buffer; + xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); + xdr_decode_YFSCallBack(&bp, call, &vp->scb); + xdr_decode_YFSVolSync(&bp, &op->volsync); + + _leave(" = 0 [done]"); + return 0; +} + +/* * YFS.FetchStatus operation type */ static const struct afs_call_type yfs_RXYFSFetchStatus = { .name = "YFS.FetchStatus", .op = yfs_FS_FetchStatus, - .deliver = yfs_deliver_fs_status_cb_and_volsync, + .deliver = yfs_deliver_fs_fetch_status, .destructor = afs_flat_call_destructor, }; @@ -1619,7 +1578,7 @@ static const struct afs_call_type yfs_RXYFSFetchStatus = { */ void yfs_fs_fetch_status(struct afs_operation *op) { - struct afs_vnode_param *vp = &op->file[0]; + struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; struct afs_call *call; __be32 *bp; @@ -67,7 +67,7 @@ struct aio_ring { unsigned header_length; /* size of aio_ring */ - struct io_event io_events[0]; + struct io_event io_events[]; }; /* 128 bytes + ring size */ /* diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile index 4ccb3c9189d8..2e42f47a7f98 100644 --- a/fs/ext4/Makefile +++ b/fs/ext4/Makefile @@ -9,7 +9,8 @@ ext4-y := balloc.o bitmap.o block_validity.o dir.o ext4_jbd2.o extents.o \ extents_status.o file.o fsmap.o fsync.o hash.o ialloc.o \ indirect.o inline.o inode.o ioctl.o mballoc.o migrate.o \ mmp.o move_extent.o namei.o page-io.o readpage.o resize.o \ - super.o symlink.o sysfs.o xattr.o xattr_trusted.o xattr_user.o + super.o symlink.o sysfs.o xattr.o xattr_hurd.o xattr_trusted.o \ + xattr_user.o ext4-$(CONFIG_EXT4_FS_POSIX_ACL) += acl.o ext4-$(CONFIG_EXT4_FS_SECURITY) += xattr_security.o diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index c654205f648d..1d82336b1cd4 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -675,6 +675,7 @@ static int ext4_d_compare(const struct dentry *dentry, unsigned int len, struct qstr qstr = {.name = str, .len = len }; const struct dentry *parent = READ_ONCE(dentry->d_parent); const struct inode *inode = READ_ONCE(parent->d_inode); + char strbuf[DNAME_INLINE_LEN]; if (!inode || !IS_CASEFOLDED(inode) || !EXT4_SB(inode->i_sb)->s_encoding) { @@ -683,6 +684,21 @@ static int ext4_d_compare(const struct dentry *dentry, unsigned int len, return memcmp(str, name->name, len); } + /* + * If the dentry name is stored in-line, then it may be concurrently + * modified by a rename. If this happens, the VFS will eventually retry + * the lookup, so it doesn't matter what ->d_compare() returns. + * However, it's unsafe to call utf8_strncasecmp() with an unstable + * string. Therefore, we have to copy the name into a temporary buffer. + */ + if (len <= DNAME_INLINE_LEN - 1) { + memcpy(strbuf, str, len); + strbuf[len] = 0; + qstr.name = strbuf; + /* prevent compiler from optimizing out the temporary buffer */ + barrier(); + } + return ext4_ci_compare(inode, name, &qstr, false); } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index b08841f70b69..42f5060f3cdf 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -426,13 +426,16 @@ struct flex_groups { #define EXT4_VERITY_FL 0x00100000 /* Verity protected inode */ #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */ /* 0x00400000 was formerly EXT4_EOFBLOCKS_FL */ + +#define EXT4_DAX_FL 0x02000000 /* Inode is DAX */ + #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */ #define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define EXT4_CASEFOLD_FL 0x40000000 /* Casefolded directory */ #define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */ -#define EXT4_FL_USER_VISIBLE 0x705BDFFF /* User visible flags */ -#define EXT4_FL_USER_MODIFIABLE 0x604BC0FF /* User modifiable flags */ +#define EXT4_FL_USER_VISIBLE 0x725BDFFF /* User visible flags */ +#define EXT4_FL_USER_MODIFIABLE 0x624BC0FF /* User modifiable flags */ /* Flags we can manipulate with through EXT4_IOC_FSSETXATTR */ #define EXT4_FL_XFLAG_VISIBLE (EXT4_SYNC_FL | \ @@ -440,14 +443,16 @@ struct flex_groups { EXT4_APPEND_FL | \ EXT4_NODUMP_FL | \ EXT4_NOATIME_FL | \ - EXT4_PROJINHERIT_FL) + EXT4_PROJINHERIT_FL | \ + EXT4_DAX_FL) /* Flags that should be inherited by new inodes from their parent. */ #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\ EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\ EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\ EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL |\ - EXT4_PROJINHERIT_FL | EXT4_CASEFOLD_FL) + EXT4_PROJINHERIT_FL | EXT4_CASEFOLD_FL |\ + EXT4_DAX_FL) /* Flags that are appropriate for regular files (all but dir-specific ones). */ #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL | EXT4_CASEFOLD_FL |\ @@ -459,6 +464,10 @@ struct flex_groups { /* The only flags that should be swapped */ #define EXT4_FL_SHOULD_SWAP (EXT4_HUGE_FILE_FL | EXT4_EXTENTS_FL) +/* Flags which are mutually exclusive to DAX */ +#define EXT4_DAX_MUT_EXCL (EXT4_VERITY_FL | EXT4_ENCRYPT_FL |\ + EXT4_JOURNAL_DATA_FL) + /* Mask out flags that are inappropriate for the given type of inode. */ static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags) { @@ -499,6 +508,7 @@ enum { EXT4_INODE_VERITY = 20, /* Verity protected inode */ EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */ /* 22 was formerly EXT4_INODE_EOFBLOCKS */ + EXT4_INODE_DAX = 25, /* Inode is DAX */ EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */ EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */ EXT4_INODE_CASEFOLD = 30, /* Casefolded directory */ @@ -1135,9 +1145,9 @@ struct ext4_inode_info { #define EXT4_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ #define EXT4_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ #ifdef CONFIG_FS_DAX -#define EXT4_MOUNT_DAX 0x00200 /* Direct Access */ +#define EXT4_MOUNT_DAX_ALWAYS 0x00200 /* Direct Access */ #else -#define EXT4_MOUNT_DAX 0 +#define EXT4_MOUNT_DAX_ALWAYS 0 #endif #define EXT4_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ #define EXT4_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */ @@ -1180,6 +1190,8 @@ struct ext4_inode_info { blocks */ #define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated file systems */ +#define EXT4_MOUNT2_DAX_NEVER 0x00000008 /* Do not allow Direct Access */ +#define EXT4_MOUNT2_DAX_INODE 0x00000010 /* For printing options only */ #define EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM 0x00000008 /* User explicitly specified journal checksum */ @@ -1992,6 +2004,7 @@ static inline bool ext4_has_incompat_features(struct super_block *sb) */ #define EXT4_FLAGS_RESIZING 0 #define EXT4_FLAGS_SHUTDOWN 1 +#define EXT4_FLAGS_BDEV_IS_DAX 2 static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi) { @@ -2705,7 +2718,7 @@ extern int ext4_can_truncate(struct inode *inode); extern int ext4_truncate(struct inode *); extern int ext4_break_layouts(struct inode *); extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length); -extern void ext4_set_inode_flags(struct inode *); +extern void ext4_set_inode_flags(struct inode *, bool init); extern int ext4_alloc_da_blocks(struct inode *inode); extern void ext4_set_aops(struct inode *inode); extern int ext4_writepage_trans_blocks(struct inode *); diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 7d088ff1e902..221f240eae60 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2844,7 +2844,7 @@ again: * in use to avoid freeing it when removing blocks. */ if (sbi->s_cluster_ratio > 1) { - pblk = ext4_ext_pblock(ex) + end - ee_block + 2; + pblk = ext4_ext_pblock(ex) + end - ee_block + 1; partial.pclu = EXT4_B2C(sbi, pblk); partial.state = nofree; } diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 54d324e80fe5..df25d38d6539 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -1116,7 +1116,7 @@ got: ei->i_block_group = group; ei->i_last_alloc_group = ~0; - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, true); if (IS_DIRSYNC(inode)) ext4_handle_sync(handle); if (insert_inode_locked(inode) < 0) { diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 40ec5c7ef0d3..10dd470876b3 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4403,9 +4403,11 @@ int ext4_get_inode_loc(struct inode *inode, struct ext4_iloc *iloc) !ext4_test_inode_state(inode, EXT4_STATE_XATTR)); } -static bool ext4_should_use_dax(struct inode *inode) +static bool ext4_should_enable_dax(struct inode *inode) { - if (!test_opt(inode->i_sb, DAX)) + struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); + + if (test_opt2(inode->i_sb, DAX_NEVER)) return false; if (!S_ISREG(inode->i_mode)) return false; @@ -4417,14 +4419,21 @@ static bool ext4_should_use_dax(struct inode *inode) return false; if (ext4_test_inode_flag(inode, EXT4_INODE_VERITY)) return false; - return true; + if (!test_bit(EXT4_FLAGS_BDEV_IS_DAX, &sbi->s_ext4_flags)) + return false; + if (test_opt(inode->i_sb, DAX_ALWAYS)) + return true; + + return ext4_test_inode_flag(inode, EXT4_INODE_DAX); } -void ext4_set_inode_flags(struct inode *inode) +void ext4_set_inode_flags(struct inode *inode, bool init) { unsigned int flags = EXT4_I(inode)->i_flags; unsigned int new_fl = 0; + WARN_ON_ONCE(IS_DAX(inode) && init); + if (flags & EXT4_SYNC_FL) new_fl |= S_SYNC; if (flags & EXT4_APPEND_FL) @@ -4435,8 +4444,13 @@ void ext4_set_inode_flags(struct inode *inode) new_fl |= S_NOATIME; if (flags & EXT4_DIRSYNC_FL) new_fl |= S_DIRSYNC; - if (ext4_should_use_dax(inode)) + + /* Because of the way inode_set_flags() works we must preserve S_DAX + * here if already set. */ + new_fl |= (inode->i_flags & S_DAX); + if (init && ext4_should_enable_dax(inode)) new_fl |= S_DAX; + if (flags & EXT4_ENCRYPT_FL) new_fl |= S_ENCRYPTED; if (flags & EXT4_CASEFOLD_FL) @@ -4650,7 +4664,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, * not initialized on a new filesystem. */ } ei->i_flags = le32_to_cpu(raw_inode->i_flags); - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, true); inode->i_blocks = ext4_inode_blocks(raw_inode, ei); ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl_lo); if (ext4_has_feature_64bit(sb)) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 2162db0c747d..999cf6add39c 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -292,6 +292,38 @@ static int ext4_ioctl_check_immutable(struct inode *inode, __u32 new_projid, return 0; } +static void ext4_dax_dontcache(struct inode *inode, unsigned int flags) +{ + struct ext4_inode_info *ei = EXT4_I(inode); + + if (S_ISDIR(inode->i_mode)) + return; + + if (test_opt2(inode->i_sb, DAX_NEVER) || + test_opt(inode->i_sb, DAX_ALWAYS)) + return; + + if ((ei->i_flags ^ flags) & EXT4_DAX_FL) + d_mark_dontcache(inode); +} + +static bool dax_compatible(struct inode *inode, unsigned int oldflags, + unsigned int flags) +{ + if (flags & EXT4_DAX_FL) { + if ((oldflags & EXT4_DAX_MUT_EXCL) || + ext4_test_inode_state(inode, + EXT4_STATE_VERITY_IN_PROGRESS)) { + return false; + } + } + + if ((flags & EXT4_DAX_MUT_EXCL) && (oldflags & EXT4_DAX_FL)) + return false; + + return true; +} + static int ext4_ioctl_setflags(struct inode *inode, unsigned int flags) { @@ -300,7 +332,6 @@ static int ext4_ioctl_setflags(struct inode *inode, int err = -EPERM, migrate = 0; struct ext4_iloc iloc; unsigned int oldflags, mask, i; - unsigned int jflag; struct super_block *sb = inode->i_sb; /* Is it quota file? Do not allow user to mess with it */ @@ -309,9 +340,6 @@ static int ext4_ioctl_setflags(struct inode *inode, oldflags = ei->i_flags; - /* The JOURNAL_DATA flag is modifiable only by root */ - jflag = flags & EXT4_JOURNAL_DATA_FL; - err = vfs_ioc_setflags_prepare(inode, oldflags, flags); if (err) goto flags_out; @@ -320,10 +348,16 @@ static int ext4_ioctl_setflags(struct inode *inode, * The JOURNAL_DATA flag can only be changed by * the relevant capability. */ - if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { + if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { if (!capable(CAP_SYS_RESOURCE)) goto flags_out; } + + if (!dax_compatible(inode, oldflags, flags)) { + err = -EOPNOTSUPP; + goto flags_out; + } + if ((flags ^ oldflags) & EXT4_EXTENTS_FL) migrate = 1; @@ -369,6 +403,8 @@ static int ext4_ioctl_setflags(struct inode *inode, if (err) goto flags_err; + ext4_dax_dontcache(inode, flags); + for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { if (!(mask & EXT4_FL_USER_MODIFIABLE)) continue; @@ -381,7 +417,8 @@ static int ext4_ioctl_setflags(struct inode *inode, ext4_clear_inode_flag(inode, i); } - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); + inode->i_ctime = current_time(inode); err = ext4_mark_iloc_dirty(handle, inode, &iloc); @@ -390,17 +427,18 @@ flags_err: if (err) goto flags_out; - if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { + if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { /* * Changes to the journaling mode can cause unsafe changes to - * S_DAX if we are using the DAX mount option. + * S_DAX if the inode is DAX */ - if (test_opt(inode->i_sb, DAX)) { + if (IS_DAX(inode)) { err = -EBUSY; goto flags_out; } - err = ext4_change_inode_journal_flag(inode, jflag); + err = ext4_change_inode_journal_flag(inode, + flags & EXT4_JOURNAL_DATA_FL); if (err) goto flags_out; } @@ -527,12 +565,15 @@ static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) xflags |= FS_XFLAG_NOATIME; if (iflags & EXT4_PROJINHERIT_FL) xflags |= FS_XFLAG_PROJINHERIT; + if (iflags & EXT4_DAX_FL) + xflags |= FS_XFLAG_DAX; return xflags; } #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ - FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) + FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT | \ + FS_XFLAG_DAX) /* Transfer xflags flags to internal */ static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) @@ -551,6 +592,8 @@ static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) iflags |= EXT4_NOATIME_FL; if (xflags & FS_XFLAG_PROJINHERIT) iflags |= EXT4_PROJINHERIT_FL; + if (xflags & FS_XFLAG_DAX) + iflags |= EXT4_DAX_FL; return iflags; } diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index a9083113a8c0..c0a331e2feb0 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4708,7 +4708,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle, } ac->ac_op = EXT4_MB_HISTORY_PREALLOC; - seq = *this_cpu_ptr(&discard_pa_seq); + seq = this_cpu_read(discard_pa_seq); if (!ext4_mb_use_preallocated(ac)) { ac->ac_op = EXT4_MB_HISTORY_ALLOC; ext4_mb_normalize_request(ac, ar); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c668f6b42374..330957ed1f05 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -522,9 +522,6 @@ static void ext4_handle_error(struct super_block *sb) smp_wmb(); sb->s_flags |= SB_RDONLY; } else if (test_opt(sb, ERRORS_PANIC)) { - if (EXT4_SB(sb)->s_journal && - !(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR)) - return; panic("EXT4-fs (device %s): panic forced after error\n", sb->s_id); } @@ -725,23 +722,20 @@ void __ext4_abort(struct super_block *sb, const char *function, va_end(args); if (sb_rdonly(sb) == 0) { - ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only"); EXT4_SB(sb)->s_mount_flags |= EXT4_MF_FS_ABORTED; + if (EXT4_SB(sb)->s_journal) + jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO); + + ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only"); /* * Make sure updated value of ->s_mount_flags will be visible * before ->s_flags update */ smp_wmb(); sb->s_flags |= SB_RDONLY; - if (EXT4_SB(sb)->s_journal) - jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO); } - if (test_opt(sb, ERRORS_PANIC) && !system_going_down()) { - if (EXT4_SB(sb)->s_journal && - !(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR)) - return; + if (test_opt(sb, ERRORS_PANIC) && !system_going_down()) panic("EXT4-fs panic from previous error\n"); - } } void __ext4_msg(struct super_block *sb, @@ -1324,6 +1318,9 @@ static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, if (WARN_ON_ONCE(IS_DAX(inode) && i_size_read(inode))) return -EINVAL; + if (ext4_test_inode_flag(inode, EXT4_INODE_DAX)) + return -EOPNOTSUPP; + res = ext4_convert_inline_data(inode); if (res) return res; @@ -1349,7 +1346,7 @@ static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, * Update inode->i_flags - S_ENCRYPTED will be enabled, * S_DAX may be disabled */ - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); } return res; } @@ -1376,7 +1373,7 @@ retry: * Update inode->i_flags - S_ENCRYPTED will be enabled, * S_DAX may be disabled */ - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); res = ext4_mark_inode_dirty(handle, inode); if (res) EXT4_ERROR_INODE(inode, "Failed to mark inode dirty"); @@ -1514,7 +1511,8 @@ enum { Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota, Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err, - Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, Opt_dax, + Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, + Opt_dax, Opt_dax_always, Opt_dax_inode, Opt_dax_never, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_warn_on_error, Opt_nowarn_on_error, Opt_mblk_io_submit, Opt_lazytime, Opt_nolazytime, Opt_debug_want_extra_isize, @@ -1581,6 +1579,9 @@ static const match_table_t tokens = { {Opt_nobarrier, "nobarrier"}, {Opt_i_version, "i_version"}, {Opt_dax, "dax"}, + {Opt_dax_always, "dax=always"}, + {Opt_dax_inode, "dax=inode"}, + {Opt_dax_never, "dax=never"}, {Opt_stripe, "stripe=%u"}, {Opt_delalloc, "delalloc"}, {Opt_warn_on_error, "warn_on_error"}, @@ -1729,6 +1730,7 @@ static int clear_qf_name(struct super_block *sb, int qtype) #define MOPT_NO_EXT3 0x0200 #define MOPT_EXT4_ONLY (MOPT_NO_EXT2 | MOPT_NO_EXT3) #define MOPT_STRING 0x0400 +#define MOPT_SKIP 0x0800 static const struct mount_opts { int token; @@ -1778,7 +1780,13 @@ static const struct mount_opts { {Opt_min_batch_time, 0, MOPT_GTE0}, {Opt_inode_readahead_blks, 0, MOPT_GTE0}, {Opt_init_itable, 0, MOPT_GTE0}, - {Opt_dax, EXT4_MOUNT_DAX, MOPT_SET}, + {Opt_dax, EXT4_MOUNT_DAX_ALWAYS, MOPT_SET | MOPT_SKIP}, + {Opt_dax_always, EXT4_MOUNT_DAX_ALWAYS, + MOPT_EXT4_ONLY | MOPT_SET | MOPT_SKIP}, + {Opt_dax_inode, EXT4_MOUNT2_DAX_INODE, + MOPT_EXT4_ONLY | MOPT_SET | MOPT_SKIP}, + {Opt_dax_never, EXT4_MOUNT2_DAX_NEVER, + MOPT_EXT4_ONLY | MOPT_SET | MOPT_SKIP}, {Opt_stripe, 0, MOPT_GTE0}, {Opt_resuid, 0, MOPT_GTE0}, {Opt_resgid, 0, MOPT_GTE0}, @@ -2123,13 +2131,56 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, } sbi->s_jquota_fmt = m->mount_opt; #endif - } else if (token == Opt_dax) { + } else if (token == Opt_dax || token == Opt_dax_always || + token == Opt_dax_inode || token == Opt_dax_never) { #ifdef CONFIG_FS_DAX - ext4_msg(sb, KERN_WARNING, - "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); - sbi->s_mount_opt |= m->mount_opt; + switch (token) { + case Opt_dax: + case Opt_dax_always: + if (is_remount && + (!(sbi->s_mount_opt & EXT4_MOUNT_DAX_ALWAYS) || + (sbi->s_mount_opt2 & EXT4_MOUNT2_DAX_NEVER))) { + fail_dax_change_remount: + ext4_msg(sb, KERN_ERR, "can't change " + "dax mount option while remounting"); + return -1; + } + if (is_remount && + (test_opt(sb, DATA_FLAGS) == + EXT4_MOUNT_JOURNAL_DATA)) { + ext4_msg(sb, KERN_ERR, "can't mount with " + "both data=journal and dax"); + return -1; + } + ext4_msg(sb, KERN_WARNING, + "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); + sbi->s_mount_opt |= EXT4_MOUNT_DAX_ALWAYS; + sbi->s_mount_opt2 &= ~EXT4_MOUNT2_DAX_NEVER; + break; + case Opt_dax_never: + if (is_remount && + (!(sbi->s_mount_opt2 & EXT4_MOUNT2_DAX_NEVER) || + (sbi->s_mount_opt & EXT4_MOUNT_DAX_ALWAYS))) + goto fail_dax_change_remount; + sbi->s_mount_opt2 |= EXT4_MOUNT2_DAX_NEVER; + sbi->s_mount_opt &= ~EXT4_MOUNT_DAX_ALWAYS; + break; + case Opt_dax_inode: + if (is_remount && + ((sbi->s_mount_opt & EXT4_MOUNT_DAX_ALWAYS) || + (sbi->s_mount_opt2 & EXT4_MOUNT2_DAX_NEVER) || + !(sbi->s_mount_opt2 & EXT4_MOUNT2_DAX_INODE))) + goto fail_dax_change_remount; + sbi->s_mount_opt &= ~EXT4_MOUNT_DAX_ALWAYS; + sbi->s_mount_opt2 &= ~EXT4_MOUNT2_DAX_NEVER; + /* Strictly for printing options */ + sbi->s_mount_opt2 |= EXT4_MOUNT2_DAX_INODE; + break; + } #else ext4_msg(sb, KERN_INFO, "dax option not supported"); + sbi->s_mount_opt2 |= EXT4_MOUNT2_DAX_NEVER; + sbi->s_mount_opt &= ~EXT4_MOUNT_DAX_ALWAYS; return -1; #endif } else if (token == Opt_data_err_abort) { @@ -2293,7 +2344,7 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb, for (m = ext4_mount_opts; m->token != Opt_err; m++) { int want_set = m->flags & MOPT_SET; if (((m->flags & (MOPT_SET|MOPT_CLEAR)) == 0) || - (m->flags & MOPT_CLEAR_ERR)) + (m->flags & MOPT_CLEAR_ERR) || m->flags & MOPT_SKIP) continue; if (!nodefs && !(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt))) continue; /* skip if same as the default */ @@ -2353,6 +2404,17 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb, fscrypt_show_test_dummy_encryption(seq, sep, sb); + if (test_opt(sb, DAX_ALWAYS)) { + if (IS_EXT2_SB(sb)) + SEQ_OPTS_PUTS("dax"); + else + SEQ_OPTS_PUTS("dax=always"); + } else if (test_opt2(sb, DAX_NEVER)) { + SEQ_OPTS_PUTS("dax=never"); + } else if (test_opt2(sb, DAX_INODE)) { + SEQ_OPTS_PUTS("dax=inode"); + } + ext4_show_quota_options(seq, sb); return 0; } @@ -2383,6 +2445,7 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es, ext4_msg(sb, KERN_ERR, "revision level too high, " "forcing read-only mode"); err = -EROFS; + goto done; } if (read_only) goto done; @@ -4017,7 +4080,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) "both data=journal and delalloc"); goto failed_mount; } - if (test_opt(sb, DAX)) { + if (test_opt(sb, DAX_ALWAYS)) { ext4_msg(sb, KERN_ERR, "can't mount with " "both data=journal and dax"); goto failed_mount; @@ -4127,13 +4190,16 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount; } - if (sbi->s_mount_opt & EXT4_MOUNT_DAX) { + if (bdev_dax_supported(sb->s_bdev, blocksize)) + set_bit(EXT4_FLAGS_BDEV_IS_DAX, &sbi->s_ext4_flags); + + if (sbi->s_mount_opt & EXT4_MOUNT_DAX_ALWAYS) { if (ext4_has_feature_inline_data(sb)) { ext4_msg(sb, KERN_ERR, "Cannot use DAX on a filesystem" " that may contain inline data"); goto failed_mount; } - if (!bdev_dax_supported(sb->s_bdev, blocksize)) { + if (!test_bit(EXT4_FLAGS_BDEV_IS_DAX, &sbi->s_ext4_flags)) { ext4_msg(sb, KERN_ERR, "DAX unsupported by block device."); goto failed_mount; @@ -5447,12 +5513,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) err = -EINVAL; goto restore_opts; } - if (test_opt(sb, DAX)) { - ext4_msg(sb, KERN_ERR, "can't mount with " - "both data=journal and dax"); - err = -EINVAL; - goto restore_opts; - } } else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) { if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) { ext4_msg(sb, KERN_ERR, "can't mount with " @@ -5468,12 +5528,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) goto restore_opts; } - if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT4_MOUNT_DAX) { - ext4_msg(sb, KERN_WARNING, "warning: refusing change of " - "dax flag with busy inodes while remounting"); - sbi->s_mount_opt ^= EXT4_MOUNT_DAX; - } - if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) ext4_abort(sb, EXT4_ERR_ESHUTDOWN, "Abort forced by user"); diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c index dec1244dd062..bbd5e7e0632b 100644 --- a/fs/ext4/verity.c +++ b/fs/ext4/verity.c @@ -113,6 +113,9 @@ static int ext4_begin_enable_verity(struct file *filp) handle_t *handle; int err; + if (IS_DAX(inode) || ext4_test_inode_flag(inode, EXT4_INODE_DAX)) + return -EINVAL; + if (ext4_verity_in_progress(inode)) return -EBUSY; @@ -241,7 +244,7 @@ static int ext4_end_enable_verity(struct file *filp, const void *desc, if (err) goto out_stop; ext4_set_inode_flag(inode, EXT4_INODE_VERITY); - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); err = ext4_mark_iloc_dirty(handle, inode, &iloc); } out_stop: diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 9b29a40738ac..7d2f6576d954 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -93,6 +93,7 @@ static const struct xattr_handler * const ext4_xattr_handler_map[] = { #ifdef CONFIG_EXT4_FS_SECURITY [EXT4_XATTR_INDEX_SECURITY] = &ext4_xattr_security_handler, #endif + [EXT4_XATTR_INDEX_HURD] = &ext4_xattr_hurd_handler, }; const struct xattr_handler *ext4_xattr_handlers[] = { @@ -105,6 +106,7 @@ const struct xattr_handler *ext4_xattr_handlers[] = { #ifdef CONFIG_EXT4_FS_SECURITY &ext4_xattr_security_handler, #endif + &ext4_xattr_hurd_handler, NULL }; diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index ffe21ac77f78..730b91fa0dd7 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -124,6 +124,7 @@ struct ext4_xattr_inode_array { extern const struct xattr_handler ext4_xattr_user_handler; extern const struct xattr_handler ext4_xattr_trusted_handler; extern const struct xattr_handler ext4_xattr_security_handler; +extern const struct xattr_handler ext4_xattr_hurd_handler; #define EXT4_XATTR_NAME_ENCRYPTION_CONTEXT "c" diff --git a/fs/ext4/xattr_hurd.c b/fs/ext4/xattr_hurd.c new file mode 100644 index 000000000000..8cfa74a56361 --- /dev/null +++ b/fs/ext4/xattr_hurd.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * linux/fs/ext4/xattr_hurd.c + * Handler for extended gnu attributes for the Hurd. + * + * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> + * Copyright (C) 2020 by Jan (janneke) Nieuwenhuizen, <janneke@gnu.org> + */ + +#include <linux/init.h> +#include <linux/string.h> +#include "ext4.h" +#include "xattr.h" + +static bool +ext4_xattr_hurd_list(struct dentry *dentry) +{ + return test_opt(dentry->d_sb, XATTR_USER); +} + +static int +ext4_xattr_hurd_get(const struct xattr_handler *handler, + struct dentry *unused, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + if (!test_opt(inode->i_sb, XATTR_USER)) + return -EOPNOTSUPP; + + return ext4_xattr_get(inode, EXT4_XATTR_INDEX_HURD, + name, buffer, size); +} + +static int +ext4_xattr_hurd_set(const struct xattr_handler *handler, + struct dentry *unused, struct inode *inode, + const char *name, const void *value, + size_t size, int flags) +{ + if (!test_opt(inode->i_sb, XATTR_USER)) + return -EOPNOTSUPP; + + return ext4_xattr_set(inode, EXT4_XATTR_INDEX_HURD, + name, value, size, flags); +} + +const struct xattr_handler ext4_xattr_hurd_handler = { + .prefix = XATTR_HURD_PREFIX, + .list = ext4_xattr_hurd_list, + .get = ext4_xattr_hurd_get, + .set = ext4_xattr_hurd_set, +}; diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index a49d0e670ddf..e4944436e733 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1140,6 +1140,7 @@ static journal_t *journal_init_common(struct block_device *bdev, init_waitqueue_head(&journal->j_wait_commit); init_waitqueue_head(&journal->j_wait_updates); init_waitqueue_head(&journal->j_wait_reserved); + mutex_init(&journal->j_abort_mutex); mutex_init(&journal->j_barrier); mutex_init(&journal->j_checkpoint_mutex); spin_lock_init(&journal->j_revoke_lock); @@ -1402,7 +1403,8 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags) printk(KERN_ERR "JBD2: Error %d detected when updating " "journal superblock for %s.\n", ret, journal->j_devname); - jbd2_journal_abort(journal, ret); + if (!is_journal_aborted(journal)) + jbd2_journal_abort(journal, ret); } return ret; @@ -2154,6 +2156,13 @@ void jbd2_journal_abort(journal_t *journal, int errno) transaction_t *transaction; /* + * Lock the aborting procedure until everything is done, this avoid + * races between filesystem's error handling flow (e.g. ext4_abort()), + * ensure panic after the error info is written into journal's + * superblock. + */ + mutex_lock(&journal->j_abort_mutex); + /* * ESHUTDOWN always takes precedence because a file system check * caused by any other journal abort error is not required after * a shutdown triggered. @@ -2167,6 +2176,7 @@ void jbd2_journal_abort(journal_t *journal, int errno) journal->j_errno = errno; jbd2_journal_update_sb_errno(journal); } + mutex_unlock(&journal->j_abort_mutex); return; } @@ -2188,10 +2198,7 @@ void jbd2_journal_abort(journal_t *journal, int errno) * layer could realise that a filesystem check is needed. */ jbd2_journal_update_sb_errno(journal); - - write_lock(&journal->j_state_lock); - journal->j_flags |= JBD2_REC_ERR; - write_unlock(&journal->j_state_lock); + mutex_unlock(&journal->j_abort_mutex); } /** diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 0637271f3770..8ff4d1a1e774 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -259,7 +259,7 @@ struct jffs2_full_dirent uint32_t ino; /* == zero for unlink */ unsigned int nhash; unsigned char type; - unsigned char name[0]; + unsigned char name[]; }; /* diff --git a/fs/jffs2/summary.h b/fs/jffs2/summary.h index 60207a2ae952..e4131cb1f1d4 100644 --- a/fs/jffs2/summary.h +++ b/fs/jffs2/summary.h @@ -61,7 +61,7 @@ struct jffs2_sum_dirent_flash jint32_t ino; /* == zero for unlink */ uint8_t nsize; /* dirent name size */ uint8_t type; /* dirent type */ - uint8_t name[0]; /* dirent name */ + uint8_t name[]; /* dirent name */ } __attribute__((packed)); struct jffs2_sum_xattr_flash @@ -117,7 +117,7 @@ struct jffs2_sum_dirent_mem jint32_t ino; /* == zero for unlink */ uint8_t nsize; /* dirent name size */ uint8_t type; /* dirent type */ - uint8_t name[0]; /* dirent name */ + uint8_t name[]; /* dirent name */ } __attribute__((packed)); struct jffs2_sum_xattr_mem diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h index 7187bd1a30ea..8d64edb80ebf 100644 --- a/fs/squashfs/squashfs_fs.h +++ b/fs/squashfs/squashfs_fs.h @@ -262,7 +262,7 @@ struct squashfs_dir_index { __le32 index; __le32 start_block; __le32 size; - unsigned char name[0]; + unsigned char name[]; }; struct squashfs_base_inode { @@ -327,7 +327,7 @@ struct squashfs_symlink_inode { __le32 inode_number; __le32 nlink; __le32 symlink_size; - char symlink[0]; + char symlink[]; }; struct squashfs_reg_inode { @@ -341,7 +341,7 @@ struct squashfs_reg_inode { __le32 fragment; __le32 offset; __le32 file_size; - __le16 block_list[0]; + __le16 block_list[]; }; struct squashfs_lreg_inode { @@ -358,7 +358,7 @@ struct squashfs_lreg_inode { __le32 fragment; __le32 offset; __le32 xattr; - __le16 block_list[0]; + __le16 block_list[]; }; struct squashfs_dir_inode { @@ -389,7 +389,7 @@ struct squashfs_ldir_inode { __le16 i_count; __le16 offset; __le32 xattr; - struct squashfs_dir_index index[0]; + struct squashfs_dir_index index[]; }; union squashfs_inode { @@ -410,7 +410,7 @@ struct squashfs_dir_entry { __le16 inode_number; __le16 type; __le16 size; - char name[0]; + char name[]; }; struct squashfs_dir_header { @@ -428,12 +428,12 @@ struct squashfs_fragment_entry { struct squashfs_xattr_entry { __le16 type; __le16 size; - char data[0]; + char data[]; }; struct squashfs_xattr_val { __le32 vsize; - char value[0]; + char value[]; }; struct squashfs_xattr_id { diff --git a/include/drm/drm_displayid.h b/include/drm/drm_displayid.h index 27bdd273fc4e..77941efb5426 100644 --- a/include/drm/drm_displayid.h +++ b/include/drm/drm_displayid.h @@ -89,7 +89,7 @@ struct displayid_detailed_timings_1 { struct displayid_detailed_timing_block { struct displayid_block base; - struct displayid_detailed_timings_1 timings[0]; + struct displayid_detailed_timings_1 timings[]; }; #define for_each_displayid_db(displayid, block, idx, length) \ diff --git a/include/keys/encrypted-type.h b/include/keys/encrypted-type.h index 9e9ccb20d586..38afb341c3f2 100644 --- a/include/keys/encrypted-type.h +++ b/include/keys/encrypted-type.h @@ -27,7 +27,7 @@ struct encrypted_key_payload { unsigned short payload_datalen; /* payload data length */ unsigned short encrypted_key_format; /* encrypted key format */ u8 *decrypted_data; /* decrypted data */ - u8 payload_data[0]; /* payload data + datablob + hmac */ + u8 payload_data[]; /* payload data + datablob + hmac */ }; extern struct key_type key_type_encrypted; diff --git a/include/keys/rxrpc-type.h b/include/keys/rxrpc-type.h index a183278c3e9e..2b0b15a71228 100644 --- a/include/keys/rxrpc-type.h +++ b/include/keys/rxrpc-type.h @@ -28,7 +28,7 @@ struct rxkad_key { u8 primary_flag; /* T if key for primary cell for this user */ u16 ticket_len; /* length of ticket[] */ u8 session_key[8]; /* DES session key */ - u8 ticket[0]; /* the encrypted ticket */ + u8 ticket[]; /* the encrypted ticket */ }; /* @@ -100,7 +100,7 @@ struct rxrpc_key_data_v1 { u32 expiry; /* time_t */ u32 kvno; u8 session_key[8]; - u8 ticket[0]; + u8 ticket[]; }; /* diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h index a954def26c0d..900b9f4e0605 100644 --- a/include/linux/can/skb.h +++ b/include/linux/can/skb.h @@ -34,7 +34,7 @@ struct can_skb_priv { int ifindex; int skbcnt; - struct can_frame cf[0]; + struct can_frame cf[]; }; static inline struct can_skb_priv *can_skb_prv(struct sk_buff *skb) diff --git a/include/linux/cb710.h b/include/linux/cb710.h index 60de3fedd3a7..405657a9a0d5 100644 --- a/include/linux/cb710.h +++ b/include/linux/cb710.h @@ -36,7 +36,7 @@ struct cb710_chip { unsigned slot_mask; unsigned slots; spinlock_t irq_lock; - struct cb710_slot slot[0]; + struct cb710_slot slot[]; }; /* NOTE: cb710_chip.slots is modified only during device init/exit and diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index e1c03339918f..6283917edd90 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -153,7 +153,7 @@ struct dma_interleaved_template { bool dst_sgl; size_t numf; size_t frame_size; - struct data_chunk sgl[0]; + struct data_chunk sgl[]; }; /** @@ -535,7 +535,7 @@ struct dmaengine_unmap_data { struct device *dev; struct kref kref; size_t len; - dma_addr_t addr[0]; + dma_addr_t addr[]; }; struct dma_async_tx_descriptor; diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index ce0b5fbf239d..3f0b19dcfae7 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -46,7 +46,7 @@ struct fscache_cache_tag { unsigned long flags; #define FSCACHE_TAG_RESERVED 0 /* T if tag is reserved for a cache */ atomic_t usage; - char name[0]; /* tag name */ + char name[]; /* tag name */ }; /* diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index f613d8529863..d56128df2aff 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -766,6 +766,11 @@ struct journal_s int j_errno; /** + * @j_abort_mutex: Lock the whole aborting procedure. + */ + struct mutex j_abort_mutex; + + /** * @j_sb_buffer: The first part of the superblock buffer. */ struct buffer_head *j_sb_buffer; @@ -1247,7 +1252,6 @@ JBD2_FEATURE_INCOMPAT_FUNCS(csum3, CSUM_V3) #define JBD2_ABORT_ON_SYNCDATA_ERR 0x040 /* Abort the journal on file * data write error in ordered * mode */ -#define JBD2_REC_ERR 0x080 /* The errno in the sb has been recorded */ /* * Function declarations for the journaling transaction and buffer diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 1776eb2e43a4..ea67910ae6b7 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -208,7 +208,7 @@ struct crash_mem_range { struct crash_mem { unsigned int max_nr_ranges; unsigned int nr_ranges; - struct crash_mem_range ranges[0]; + struct crash_mem_range ranges[]; }; extern int crash_exclude_mem_range(struct crash_mem *mem, diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 594265bfd390..e210af75ee38 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -161,7 +161,7 @@ struct kretprobe_instance { kprobe_opcode_t *ret_addr; struct task_struct *task; void *fp; - char data[0]; + char data[]; }; struct kretprobe_blackpoint { diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 62ec926c78a0..d564855243d8 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -409,7 +409,7 @@ struct kvm_irq_routing_table { * Array indexed by gsi. Each entry contains list of irq chips * the gsi is connected to. */ - struct hlist_head map[0]; + struct hlist_head map[]; }; #endif diff --git a/include/linux/libata.h b/include/linux/libata.h index af832852e620..8bf5e59a7859 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -609,7 +609,7 @@ struct ata_host { struct task_struct *eh_owner; struct ata_port *simplex_claimed; /* channel owning the DMA */ - struct ata_port *ports[0]; + struct ata_port *ports[]; }; struct ata_queued_cmd { diff --git a/include/linux/sctp.h b/include/linux/sctp.h index 8ccd82105de8..76731230bbc5 100644 --- a/include/linux/sctp.h +++ b/include/linux/sctp.h @@ -221,7 +221,7 @@ struct sctp_datahdr { __be16 stream; __be16 ssn; __u32 ppid; - __u8 payload[0]; + __u8 payload[]; }; struct sctp_data_chunk { @@ -269,7 +269,7 @@ struct sctp_inithdr { __be16 num_outbound_streams; __be16 num_inbound_streams; __be32 initial_tsn; - __u8 params[0]; + __u8 params[]; }; struct sctp_init_chunk { @@ -299,13 +299,13 @@ struct sctp_cookie_preserve_param { /* Section 3.3.2.1 Host Name Address (11) */ struct sctp_hostname_param { struct sctp_paramhdr param_hdr; - uint8_t hostname[0]; + uint8_t hostname[]; }; /* Section 3.3.2.1 Supported Address Types (12) */ struct sctp_supported_addrs_param { struct sctp_paramhdr param_hdr; - __be16 types[0]; + __be16 types[]; }; /* ADDIP Section 3.2.6 Adaptation Layer Indication */ @@ -317,25 +317,25 @@ struct sctp_adaptation_ind_param { /* ADDIP Section 4.2.7 Supported Extensions Parameter */ struct sctp_supported_ext_param { struct sctp_paramhdr param_hdr; - __u8 chunks[0]; + __u8 chunks[]; }; /* AUTH Section 3.1 Random */ struct sctp_random_param { struct sctp_paramhdr param_hdr; - __u8 random_val[0]; + __u8 random_val[]; }; /* AUTH Section 3.2 Chunk List */ struct sctp_chunks_param { struct sctp_paramhdr param_hdr; - __u8 chunks[0]; + __u8 chunks[]; }; /* AUTH Section 3.3 HMAC Algorithm */ struct sctp_hmac_algo_param { struct sctp_paramhdr param_hdr; - __be16 hmac_ids[0]; + __be16 hmac_ids[]; }; /* RFC 2960. Section 3.3.3 Initiation Acknowledgement (INIT ACK) (2): @@ -350,7 +350,7 @@ struct sctp_initack_chunk { /* Section 3.3.3.1 State Cookie (7) */ struct sctp_cookie_param { struct sctp_paramhdr p; - __u8 body[0]; + __u8 body[]; }; /* Section 3.3.3.1 Unrecognized Parameters (8) */ @@ -384,7 +384,7 @@ struct sctp_sackhdr { __be32 a_rwnd; __be16 num_gap_ack_blocks; __be16 num_dup_tsns; - union sctp_sack_variable variable[0]; + union sctp_sack_variable variable[]; }; struct sctp_sack_chunk { @@ -436,7 +436,7 @@ struct sctp_shutdown_chunk { struct sctp_errhdr { __be16 cause; __be16 length; - __u8 variable[0]; + __u8 variable[]; }; struct sctp_operr_chunk { @@ -594,7 +594,7 @@ struct sctp_fwdtsn_skip { struct sctp_fwdtsn_hdr { __be32 new_cum_tsn; - struct sctp_fwdtsn_skip skip[0]; + struct sctp_fwdtsn_skip skip[]; }; struct sctp_fwdtsn_chunk { @@ -611,7 +611,7 @@ struct sctp_ifwdtsn_skip { struct sctp_ifwdtsn_hdr { __be32 new_cum_tsn; - struct sctp_ifwdtsn_skip skip[0]; + struct sctp_ifwdtsn_skip skip[]; }; struct sctp_ifwdtsn_chunk { @@ -658,7 +658,7 @@ struct sctp_addip_param { struct sctp_addiphdr { __be32 serial; - __u8 params[0]; + __u8 params[]; }; struct sctp_addip_chunk { @@ -718,7 +718,7 @@ struct sctp_addip_chunk { struct sctp_authhdr { __be16 shkey_id; __be16 hmac_id; - __u8 hmac[0]; + __u8 hmac[]; }; struct sctp_auth_chunk { @@ -733,7 +733,7 @@ struct sctp_infox { struct sctp_reconf_chunk { struct sctp_chunkhdr chunk_hdr; - __u8 params[0]; + __u8 params[]; }; struct sctp_strreset_outreq { @@ -741,13 +741,13 @@ struct sctp_strreset_outreq { __be32 request_seq; __be32 response_seq; __be32 send_reset_at_tsn; - __be16 list_of_streams[0]; + __be16 list_of_streams[]; }; struct sctp_strreset_inreq { struct sctp_paramhdr param_hdr; __be32 request_seq; - __be16 list_of_streams[0]; + __be16 list_of_streams[]; }; struct sctp_strreset_tsnreq { diff --git a/include/linux/tifm.h b/include/linux/tifm.h index 299cbb8c63bb..44073d06710f 100644 --- a/include/linux/tifm.h +++ b/include/linux/tifm.h @@ -124,7 +124,7 @@ struct tifm_adapter { int (*has_ms_pif)(struct tifm_adapter *fm, struct tifm_dev *sock); - struct tifm_dev *sockets[0]; + struct tifm_dev *sockets[]; }; struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets, diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h index d7338bfd7b0f..16e8b2f8d006 100644 --- a/include/net/netfilter/nf_flow_table.h +++ b/include/net/netfilter/nf_flow_table.h @@ -161,10 +161,51 @@ struct nf_flow_route { struct flow_offload *flow_offload_alloc(struct nf_conn *ct); void flow_offload_free(struct flow_offload *flow); -int nf_flow_table_offload_add_cb(struct nf_flowtable *flow_table, - flow_setup_cb_t *cb, void *cb_priv); -void nf_flow_table_offload_del_cb(struct nf_flowtable *flow_table, - flow_setup_cb_t *cb, void *cb_priv); +static inline int +nf_flow_table_offload_add_cb(struct nf_flowtable *flow_table, + flow_setup_cb_t *cb, void *cb_priv) +{ + struct flow_block *block = &flow_table->flow_block; + struct flow_block_cb *block_cb; + int err = 0; + + down_write(&flow_table->flow_block_lock); + block_cb = flow_block_cb_lookup(block, cb, cb_priv); + if (block_cb) { + err = -EEXIST; + goto unlock; + } + + block_cb = flow_block_cb_alloc(cb, cb_priv, cb_priv, NULL); + if (IS_ERR(block_cb)) { + err = PTR_ERR(block_cb); + goto unlock; + } + + list_add_tail(&block_cb->list, &block->cb_list); + +unlock: + up_write(&flow_table->flow_block_lock); + return err; +} + +static inline void +nf_flow_table_offload_del_cb(struct nf_flowtable *flow_table, + flow_setup_cb_t *cb, void *cb_priv) +{ + struct flow_block *block = &flow_table->flow_block; + struct flow_block_cb *block_cb; + + down_write(&flow_table->flow_block_lock); + block_cb = flow_block_cb_lookup(block, cb, cb_priv); + if (block_cb) { + list_del(&block_cb->list); + flow_block_cb_free(block_cb); + } else { + WARN_ON(true); + } + up_write(&flow_table->flow_block_lock); +} int flow_offload_route_init(struct flow_offload *flow, const struct nf_flow_route *route); diff --git a/include/net/tc_act/tc_ct.h b/include/net/tc_act/tc_ct.h index 79654bcb9a29..8250d6f0a462 100644 --- a/include/net/tc_act/tc_ct.h +++ b/include/net/tc_act/tc_ct.h @@ -66,7 +66,16 @@ static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a) #endif /* CONFIG_NF_CONNTRACK */ #if IS_ENABLED(CONFIG_NET_ACT_CT) -void tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie); +static inline void +tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie) +{ + enum ip_conntrack_info ctinfo = cookie & NFCT_INFOMASK; + struct nf_conn *ct; + + ct = (struct nf_conn *)(cookie & NFCT_PTRMASK); + nf_conntrack_get(&ct->ct_general); + nf_ct_set(skb, ct, ctinfo); +} #else static inline void tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie) { } diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 379a612f8f1d..f44eb0a04afd 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -262,6 +262,7 @@ struct fsxattr { #define FS_EA_INODE_FL 0x00200000 /* Inode used for large EA */ #define FS_EOFBLOCKS_FL 0x00400000 /* Reserved for ext4 */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_DAX_FL 0x02000000 /* Inode is DAX */ #define FS_INLINE_DATA_FL 0x10000000 /* Reserved for ext4 */ #define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define FS_CASEFOLD_FL 0x40000000 /* Folder is case insensitive */ diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h index c1395b5bd432..9463db2dfa9d 100644 --- a/include/uapi/linux/xattr.h +++ b/include/uapi/linux/xattr.h @@ -7,6 +7,7 @@ Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org> Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved. Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com> + Copyright (c) 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> */ #include <linux/libc-compat.h> @@ -31,6 +32,9 @@ #define XATTR_BTRFS_PREFIX "btrfs." #define XATTR_BTRFS_PREFIX_LEN (sizeof(XATTR_BTRFS_PREFIX) - 1) +#define XATTR_HURD_PREFIX "gnu." +#define XATTR_HURD_PREFIX_LEN (sizeof(XATTR_HURD_PREFIX) - 1) + #define XATTR_SECURITY_PREFIX "security." #define XATTR_SECURITY_PREFIX_LEN (sizeof(XATTR_SECURITY_PREFIX) - 1) diff --git a/kernel/trace/trace_probe.h b/kernel/trace/trace_probe.h index a0ff9e200ef6..a22b62813f8c 100644 --- a/kernel/trace/trace_probe.h +++ b/kernel/trace/trace_probe.h @@ -236,7 +236,7 @@ struct trace_probe_event { struct trace_event_call call; struct list_head files; struct list_head probes; - struct trace_uprobe_filter filter[0]; + struct trace_uprobe_filter filter[]; }; struct trace_probe { diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 83330a6cb242..12fda8f27b08 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -4605,7 +4605,11 @@ static void tcp_data_queue_ofo(struct sock *sk, struct sk_buff *skb) if (tcp_ooo_try_coalesce(sk, tp->ooo_last_skb, skb, &fragstolen)) { coalesce_done: - tcp_grow_window(sk, skb); + /* For non sack flows, do not grow window to force DUPACK + * and trigger fast retransmit. + */ + if (tcp_is_sack(tp)) + tcp_grow_window(sk, skb); kfree_skb_partial(skb, fragstolen); skb = NULL; goto add_sack; @@ -4689,7 +4693,11 @@ add_sack: tcp_sack_new_ofo_skb(sk, seq, end_seq); end: if (skb) { - tcp_grow_window(sk, skb); + /* For non sack flows, do not grow window to force DUPACK + * and trigger fast retransmit. + */ + if (tcp_is_sack(tp)) + tcp_grow_window(sk, skb); skb_condense(skb); skb_set_owner_r(skb, sk); } diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index bf132575040d..bbdb74b8bc3c 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -1053,8 +1053,10 @@ int mptcp_subflow_create_socket(struct sock *sk, struct socket **new_sock) err = tcp_set_ulp(sf->sk, "mptcp"); release_sock(sf->sk); - if (err) + if (err) { + sock_release(sf); return err; + } /* the newly created socket really belongs to the owning MPTCP master * socket, even if for additional subflows the allocation is performed diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c index 6a3034f84ab6..afa85171df38 100644 --- a/net/netfilter/nf_flow_table_core.c +++ b/net/netfilter/nf_flow_table_core.c @@ -387,51 +387,6 @@ static void nf_flow_offload_work_gc(struct work_struct *work) queue_delayed_work(system_power_efficient_wq, &flow_table->gc_work, HZ); } -int nf_flow_table_offload_add_cb(struct nf_flowtable *flow_table, - flow_setup_cb_t *cb, void *cb_priv) -{ - struct flow_block *block = &flow_table->flow_block; - struct flow_block_cb *block_cb; - int err = 0; - - down_write(&flow_table->flow_block_lock); - block_cb = flow_block_cb_lookup(block, cb, cb_priv); - if (block_cb) { - err = -EEXIST; - goto unlock; - } - - block_cb = flow_block_cb_alloc(cb, cb_priv, cb_priv, NULL); - if (IS_ERR(block_cb)) { - err = PTR_ERR(block_cb); - goto unlock; - } - - list_add_tail(&block_cb->list, &block->cb_list); - -unlock: - up_write(&flow_table->flow_block_lock); - return err; -} -EXPORT_SYMBOL_GPL(nf_flow_table_offload_add_cb); - -void nf_flow_table_offload_del_cb(struct nf_flowtable *flow_table, - flow_setup_cb_t *cb, void *cb_priv) -{ - struct flow_block *block = &flow_table->flow_block; - struct flow_block_cb *block_cb; - - down_write(&flow_table->flow_block_lock); - block_cb = flow_block_cb_lookup(block, cb, cb_priv); - if (block_cb) { - list_del(&block_cb->list); - flow_block_cb_free(block_cb); - } else { - WARN_ON(true); - } - up_write(&flow_table->flow_block_lock); -} -EXPORT_SYMBOL_GPL(nf_flow_table_offload_del_cb); static int nf_flow_nat_port_tcp(struct sk_buff *skb, unsigned int thoff, __be16 port, __be16 new_port) diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index e29f0f45d688..e9f3576cbf71 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -1543,17 +1543,6 @@ static void __exit ct_cleanup_module(void) destroy_workqueue(act_ct_wq); } -void tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie) -{ - enum ip_conntrack_info ctinfo = cookie & NFCT_INFOMASK; - struct nf_conn *ct; - - ct = (struct nf_conn *)(cookie & NFCT_PTRMASK); - nf_conntrack_get(&ct->ct_general); - nf_ct_set(skb, ct, ctinfo); -} -EXPORT_SYMBOL_GPL(tcf_ct_flow_table_restore_skb); - module_init(ct_init_module); module_exit(ct_cleanup_module); MODULE_AUTHOR("Paul Blakey <paulb@mellanox.com>"); diff --git a/samples/mei/mei-amt-version.c b/samples/mei/mei-amt-version.c index 32234481ad7d..ad3e56042f96 100644 --- a/samples/mei/mei-amt-version.c +++ b/samples/mei/mei-amt-version.c @@ -267,7 +267,7 @@ struct amt_host_if_msg_header { struct amt_host_if_resp_header { struct amt_host_if_msg_header header; uint32_t status; - unsigned char data[0]; + unsigned char data[]; } __attribute__((packed)); const uuid_le MEI_IAMTHIF = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, \ diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh index 13e5fbafdf2f..66a6d511b524 100755 --- a/scripts/decode_stacktrace.sh +++ b/scripts/decode_stacktrace.sh @@ -27,7 +27,10 @@ parse_symbol() { elif [[ "${modcache[$module]+isset}" == "isset" ]]; then local objfile=${modcache[$module]} else - [[ $modpath == "" ]] && return + if [[ $modpath == "" ]]; then + echo "WARNING! Modules path isn't set, but is needed to parse this symbol" >&2 + return + fi local objfile=$(find "$modpath" -name "${module//_/[-_]}.ko*" -print -quit) [[ $objfile == "" ]] && return modcache[$module]=$objfile diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 298b73794d8b..16c1894c29bb 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -107,7 +107,7 @@ struct ima_digest_data { } ng; u8 data[2]; } xattr; - u8 digest[0]; + u8 digest[]; } __packed; /* @@ -119,7 +119,7 @@ struct signature_v2_hdr { uint8_t hash_algo; /* Digest algorithm [enum hash_algo] */ __be32 keyid; /* IMA key identifier - not X509/PGP specific */ __be16 sig_size; /* signature size */ - uint8_t sig[0]; /* signature payload */ + uint8_t sig[]; /* signature payload */ } __packed; /* integrity data associated with an inode */ diff --git a/sound/soc/sof/probe.h b/sound/soc/sof/probe.h index b04b728c7224..5e159ab239fa 100644 --- a/sound/soc/sof/probe.h +++ b/sound/soc/sof/probe.h @@ -36,7 +36,7 @@ struct sof_probe_point_desc { struct sof_ipc_probe_dma_add_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; - struct sof_probe_dma dma[0]; + struct sof_probe_dma dma[]; } __packed; struct sof_ipc_probe_info_params { @@ -51,19 +51,19 @@ struct sof_ipc_probe_info_params { struct sof_ipc_probe_dma_remove_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; - unsigned int stream_tag[0]; + unsigned int stream_tag[]; } __packed; struct sof_ipc_probe_point_add_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; - struct sof_probe_point_desc desc[0]; + struct sof_probe_point_desc desc[]; } __packed; struct sof_ipc_probe_point_remove_params { struct sof_ipc_cmd_hdr hdr; unsigned int num_elems; - unsigned int buffer_id[0]; + unsigned int buffer_id[]; } __packed; int sof_ipc_probe_init(struct snd_sof_dev *sdev, diff --git a/tools/testing/nvdimm/test/nfit_test.h b/tools/testing/nvdimm/test/nfit_test.h index db3c07beb9d1..b5f7a996c4d0 100644 --- a/tools/testing/nvdimm/test/nfit_test.h +++ b/tools/testing/nvdimm/test/nfit_test.h @@ -51,7 +51,7 @@ struct nd_cmd_translate_spa { __u32 nfit_device_handle; __u32 _reserved; __u64 dpa; - } __packed devices[0]; + } __packed devices[]; } __packed; @@ -74,7 +74,7 @@ struct nd_cmd_ars_err_inj_stat { struct nd_error_stat_query_record { __u64 err_inj_stat_spa_range_base; __u64 err_inj_stat_spa_range_length; - } __packed record[0]; + } __packed record[]; } __packed; #define ND_INTEL_SMART 1 @@ -180,7 +180,7 @@ struct nd_intel_fw_send_data { __u32 context; __u32 offset; __u32 length; - __u8 data[0]; + __u8 data[]; /* this field is not declared due ot variable data from input */ /* __u32 status; */ } __packed; |