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2018-10-22f2fs: account read IOs and use IO counts for is_idleJaegeuk Kim1-1/+6
This patch adds issued read IO counts which is under block layer. Chao modified a bit, since: Below race can cause reversed reference on F2FS_RD_DATA, there is the same issue in f2fs_submit_page_bio(), fix them by relocate __submit_bio() and inc_page_count. Thread A Thread B - f2fs_write_begin - f2fs_submit_page_read - __submit_bio - f2fs_read_end_io - __read_end_io - dec_page_count(, F2FS_RD_DATA) - inc_page_count(, F2FS_RD_DATA) Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-10-16f2fs: checkpoint disablingDaniel Rosenberg1-1/+2
Note that, it requires "f2fs: return correct errno in f2fs_gc". This adds a lightweight non-persistent snapshotting scheme to f2fs. To use, mount with the option checkpoint=disable, and to return to normal operation, remount with checkpoint=enable. If the filesystem is shut down before remounting with checkpoint=enable, it will revert back to its apparent state when it was first mounted with checkpoint=disable. This is useful for situations where you wish to be able to roll back the state of the disk in case of some critical failure. Signed-off-by: Daniel Rosenberg <drosen@google.com> [Jaegeuk Kim: use SB_RDONLY instead of MS_RDONLY] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-09-30f2fs: add to account skip count of background GCChao Yu1-0/+4
This patch adds to account skip count of background GC, and show stat info via 'status' debugfs entry. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-09-30f2fs: add to account meta IOChao Yu1-0/+13
This patch supports to account meta IO, it enables to show write IO from f2fs more comprehensively via 'status' debugfs entry. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-09-12f2fs: add SPDX license identifiersChao Yu1-4/+1
Remove the verbose license text from f2fs files and replace them with SPDX tags. This does not change the license of any of the code. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-09-05f2fs: fix to avoid NULL pointer dereference on se->discard_mapChao Yu1-2/+1
https://bugzilla.kernel.org/show_bug.cgi?id=200951 These is a NULL pointer dereference issue reported in bugzilla: Hi, in the setup there is a SATA SSD connected to a SATA-to-USB bridge. The disc is "Samsung SSD 850 PRO 256G" which supports TRIM. There are four partitions: sda1: FAT /boot sda2: F2FS / sda3: F2FS /home sda4: F2FS The bridge is ASMT1153e which uses the "uas" driver. There is no TRIM pass-through, so, when mounting it reports: mounting with "discard" option, but the device does not support discard The USB host is USB3.0 and UASP capable. It is the one on RK3399. Given this everything works fine, except there is no TRIM support. In order to enable TRIM a new UDEV rule is added [1]: /etc/udev/rules.d/10-sata-bridge-trim.rules: ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="55aa", SUBSYSTEM=="scsi_disk", ATTR{provisioning_mode}="unmap" After reboot any F2FS write hangs forever and dmesg reports: Unable to handle kernel NULL pointer dereference Also tested on a x86_64 system: works fine even with TRIM enabled. same disc same bridge different usb host controller different cpu architecture not root filesystem Regards, Vicenç. [1] Post #5 in https://bbs.archlinux.org/viewtopic.php?id=236280 Unable to handle kernel NULL pointer dereference at virtual address 000000000000003e Mem abort info: ESR = 0x96000004 Exception class = DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp = 00000000626e3122 [000000000000003e] pgd=0000000000000000 Internal error: Oops: 96000004 [#1] SMP Modules linked in: overlay snd_soc_hdmi_codec rc_cec dw_hdmi_i2s_audio dw_hdmi_cec snd_soc_simple_card snd_soc_simple_card_utils snd_soc_rockchip_i2s rockchip_rga snd_soc_rockchip_pcm rockchipdrm videobuf2_dma_sg v4l2_mem2mem rtc_rk808 videobuf2_memops analogix_dp videobuf2_v4l2 videobuf2_common dw_hdmi dw_wdt cec rc_core videodev drm_kms_helper media drm rockchip_thermal rockchip_saradc realtek drm_panel_orientation_quirks syscopyarea sysfillrect sysimgblt fb_sys_fops dwmac_rk stmmac_platform stmmac pwm_bl squashfs loop crypto_user gpio_keys hid_kensington CPU: 5 PID: 957 Comm: nvim Not tainted 4.19.0-rc1-1-ARCH #1 Hardware name: Sapphire-RK3399 Board (DT) pstate: 00000005 (nzcv daif -PAN -UAO) pc : update_sit_entry+0x304/0x4b0 lr : update_sit_entry+0x108/0x4b0 sp : ffff00000ca13bd0 x29: ffff00000ca13bd0 x28: 000000000000003e x27: 0000000000000020 x26: 0000000000080000 x25: 0000000000000048 x24: ffff8000ebb85cf8 x23: 0000000000000253 x22: 00000000ffffffff x21: 00000000000535f2 x20: 00000000ffffffdf x19: ffff8000eb9e6800 x18: ffff8000eb9e6be8 x17: 0000000007ce6926 x16: 000000001c83ffa8 x15: 0000000000000000 x14: ffff8000f602df90 x13: 0000000000000006 x12: 0000000000000040 x11: 0000000000000228 x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 00000000000535f2 x6 : ffff8000ebff3440 x5 : ffff8000ebff3440 x4 : ffff8000ebe3a6c8 x3 : 00000000ffffffff x2 : 0000000000000020 x1 : 0000000000000000 x0 : ffff8000eb9e5800 Process nvim (pid: 957, stack limit = 0x0000000063a78320) Call trace: update_sit_entry+0x304/0x4b0 f2fs_invalidate_blocks+0x98/0x140 truncate_node+0x90/0x400 f2fs_remove_inode_page+0xe8/0x340 f2fs_evict_inode+0x2b0/0x408 evict+0xe0/0x1e0 iput+0x160/0x260 do_unlinkat+0x214/0x298 __arm64_sys_unlinkat+0x3c/0x68 el0_svc_handler+0x94/0x118 el0_svc+0x8/0xc Code: f9400800 b9488400 36080140 f9400f01 (387c4820) ---[ end trace a0f21a307118c477 ]--- The reason is it is possible to enable discard flag on block queue via UDEV, but during mount, f2fs will initialize se->discard_map only if this flag is set, once the flag is set after mount, f2fs may dereference NULL pointer on se->discard_map. So this patch does below changes to fix this issue: - initialize and update se->discard_map all the time. - don't clear DISCARD option if device has no QUEUE_FLAG_DISCARD flag during mount. - don't issue small discard on zoned block device. - introduce some functions to enhance the readability. Signed-off-by: Chao Yu <yuchao0@huawei.com> Tested-by: Vicente Bergas <vicencb@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-07-28f2fs: Allocate and stat mem used by free nid bitmap more accuratelyYunlei He1-1/+2
This patch used f2fs_bitmap_size macro to calculate mem used by free nid bitmap, and stat used mem including aligned part. Signed-off-by: Yunlei He <heyunlei@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-05-31f2fs: avoid stucking GC due to atomic writeChao Yu1-0/+6
f2fs doesn't allow abuse on atomic write class interface, so except limiting in-mem pages' total memory usage capacity, we need to limit atomic-write usage as well when filesystem is seriously fragmented, otherwise we may run into infinite loop during foreground GC because target blocks in victim segment are belong to atomic opened file for long time. Now, we will detect failure due to atomic write in foreground GC, if the count exceeds threshold, we will drop all atomic written data in cache, by this, I expect it can keep our system running safely to prevent Dos attack. In addition, his patch adds to show GC skip information in debugfs, now it just shows count of skipped caused by atomic write. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-02f2fs: inject fault to kzallocChao Yu1-1/+1
This patch introduces f2fs_kzalloc based on f2fs_kmalloc in order to support error injection for kzalloc(). Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-02f2fs: remove unneeded memory footprint accountingChao Yu1-1/+0
We forgot to remov memory footprint accounting of per-cpu type variables, fix it. Fixes: 35782b233f37 ("f2fs: remove percpu_count due to performance regression") Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-02f2fs: reserve nid resource for quota sysfileChao Yu1-8/+1
During mkfs, quota sysfiles have already occupied nid resource, it needs to adjust remaining available nid count in kernel side. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-11-13f2fs: expose quota information in debugfsJaegeuk Kim1-0/+11
This patch shows # of dirty pages and # of hidden quota files. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-11-05f2fs: show current cp stateJaegeuk Kim1-2/+3
This patch shows whether checkpoint met any error case. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-10-10f2fs: fix to show ino management cache size correctlyChao Yu1-1/+1
It needs to stat size of ino management cache with all type instead of orphan ino type. Fixes: 652be55162dc ("f2fs: show # of orphan inodes") Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-10-10f2fs: obsolete ALLOC_NID_LIST listChao Yu1-4/+4
As Fan Li reported, there is no user traversing nid_list[ALLOC_NID_LIST] which is used for tracking preallocated nids. Let's drop it, and only track preallocated nids in free_nid_root radix-tree. Reported-by: Fan Li <fanofcode.li@samsung.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-10-10f2fs: show flush list status in sysfsChao Yu1-1/+4
This patch adds to show flush list status in sysfs. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-05-03f2fs: show available_nids in f2fs/statusJaegeuk Kim1-2/+3
This patch adds an entry in f2fs/status to show # of available nids. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-04-19f2fs: add undiscard blocks statChao Yu1-2/+3
This patch adds to account undiscard blocks. Signed-off-by: Chao Yu <yuchao0@huawei.com>
2017-04-10f2fs: clean up some macros in terms of GET_SEGNOJaegeuk Kim1-3/+3
This patch cleans several macros by introducing: - BLKS_PER_SEC - GET_SEC_FROM_SEG - GET_SEG_FROM_SEC - GET_ZONE_FROM_SEC - GET_ZONE_FROM_SEG Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-04-10f2fs: clean up get_valid_blocks with consistent parameterJaegeuk Kim1-1/+1
This patch cleans up get_valid_blocks, which has no functional change. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-04-05f2fs: count discard command entryChao Yu1-3/+9
Adds to count discard command entry and show the number in debugfs, also fix to add cost of discard command cache into total comsumed memory footprint. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-04-05f2fs: show issued flush/discard countChao Yu1-8/+16
Show historical count of flush command and discard command. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-24f2fs: show the max number of volatile operationsChao Yu1-2/+8
This patch adds to show the max number of volatile operations which are conducting concurrently. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-21f2fs: calculate the f2fs_stat_info into base_memKinglong Mee1-1/+5
The memory size of f2fs_stat_info also should be calculated. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-20f2fs: skip scanning free nid bitmap of full NAT blocksChao Yu1-0/+1
This patch adds to account free nids for each NAT blocks, and while scanning all free nid bitmap, do check count and skip lookuping in full NAT block. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-27f2fs: introduce free nid bitmapChao Yu1-0/+2
In scenario of intensively node allocation, free nids will be ran out soon, then it needs to stop to load free nids by traversing NAT blocks, in worse case, if NAT blocks does not be cached in memory, it generates IOs which slows down our foreground operations. In order to speed up node allocation, in this patch we introduce a new free_nid_bitmap array, so there is an bitmap table for each NAT block, Once the NAT block is loaded, related bitmap cache will be switched on, and bitmap will be set during traversing nat entries in NAT block, later we can query and update nid usage status in memory completely. With such implementation, I expect performance of node allocation can be improved in the long-term after filesystem image is mounted. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-27f2fs: add bitmaps for empty or full NAT blocksJaegeuk Kim1-0/+1
This patches adds bitmaps to represent empty or full NAT blocks containing free nid entries. If we can find valid crc|cp_ver in the last block of checkpoint pack, we'll use these bitmaps when building free nids. In order to avoid checkpointing burden, up-to-date bitmaps will be flushed only during umount time. So, normally we can get this gain, but when power-cut happens, we rely on fsck.f2fs which recovers this bitmap again. After this patch, we build free nids from nid #0 at mount time to make more full NAT blocks, but in runtime, we check empty NAT blocks to load free nids without loading any NAT pages from disk. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-22f2fs: show # of APPEND and UPDATE inodesJaegeuk Kim1-2/+4
This patch shows cached # of APPEND and UPDATE inode entries. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-22f2fs: show # of on-going flush and discard biosJaegeuk Kim1-2/+9
This patch adds stat information for flush and discard commands. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-22f2fs: factor out discard command info into discard_cmd_controlJaegeuk Kim1-0/+2
This patch adds discard_cmd_control with the existing discarding controls. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-22f2fs: reorganize stat informationJaegeuk Kim1-4/+4
This patch modifies stat information more clearly. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-02-22f2fs: clean up flush/discard command namingsJaegeuk Kim1-1/+1
This patch simply cleans up the names for flush/discard commands. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-01-29f2fs: show the max number of atomic operationsJaegeuk Kim1-0/+7
This patch adds to show the max number of atomic operations which are conducting concurrently. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-11-25f2fs: set ->owner for debugfs status file's file_operationsNicolai Stange1-0/+1
The struct file_operations instance serving the f2fs/status debugfs file lacks an initialization of its ->owner. This means that although that file might have been opened, the f2fs module can still get removed. Any further operation on that opened file, releasing included, will cause accesses to unmapped memory. Indeed, Mike Marshall reported the following: BUG: unable to handle kernel paging request at ffffffffa0307430 IP: [<ffffffff8132a224>] full_proxy_release+0x24/0x90 <...> Call Trace: [] __fput+0xdf/0x1d0 [] ____fput+0xe/0x10 [] task_work_run+0x8e/0xc0 [] do_exit+0x2ae/0xae0 [] ? __audit_syscall_entry+0xae/0x100 [] ? syscall_trace_enter+0x1ca/0x310 [] do_group_exit+0x44/0xc0 [] SyS_exit_group+0x14/0x20 [] do_syscall_64+0x61/0x150 [] entry_SYSCALL64_slow_path+0x25/0x25 <...> ---[ end trace f22ae883fa3ea6b8 ]--- Fixing recursive fault but reboot is needed! Fix this by initializing the f2fs/status file_operations' ->owner with THIS_MODULE. This will allow debugfs to grab a reference to the f2fs module upon any open on that file, thus preventing it from getting removed. Fixes: 902829aa0b72 ("f2fs: move proc files to debugfs") Reported-by: Mike Marshall <hubcap@omnibond.com> Reported-by: Martin Brandenburg <martin@omnibond.com> Cc: stable@vger.kernel.org Signed-off-by: Nicolai Stange <nicstange@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-11-25f2fs: don't wait writeback for datas during checkpointChao Yu1-3/+4
Normally, while committing checkpoint, we will wait on all pages to be writebacked no matter the page is data or metadata, so in scenario where there are lots of data IO being submitted with metadata, we may suffer long latency for waiting writeback during checkpoint. Indeed, we only care about persistence for pages with metadata, but not pages with data, as file system consistent are only related to metadate, so in order to avoid encountering long latency in above scenario, let's recognize and reference metadata in submitted IOs, wait writeback only for metadatas. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-11-23f2fs: remove percpu_count due to performance regressionJaegeuk Kim1-6/+6
This patch removes percpu_count usage due to performance regression in iozone. Fixes: 523be8a6b3 ("f2fs: use percpu_counter for page counters") Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-11-23f2fs: split free nid listChao Yu1-4/+7
During free nid allocation, in order to do preallocation, we will tag free nid entry as allocated one and still leave it in free nid list, for other allocators who want to grab free nids, it needs to traverse the free nid list for lookup. It becomes overhead in scenario of allocating free nid intensively by multithreads. This patch splits free nid list to two list: {free,alloc}_nid_list, to keep free nids and preallocated free nids separately, after that, traverse latency will be gone, besides split nid_cnt for separate statistic. Additionally, introduce __insert_nid_to_list and __remove_nid_from_list for cleanup. Signed-off-by: Chao Yu <yuchao0@huawei.com> [Jaegeuk Kim: modify f2fs_bug_on to avoid needless branches] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-22f2fs: show dirty inode numberChao Yu1-0/+3
This patch enables showing dirty inode number in procfs. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29f2fs: add discard info to sys entry of f2fs statusYunlei He1-2/+8
This patch add discard block count to sys entry of f2fs status Signed-off-by: Yunlei He <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-24f2fs: do not use discard_map for hard disksJaegeuk Kim1-1/+3
We don't need to keep discard_map, if disk does not support discard command. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: flush inode metadata when checkpoint is doingJaegeuk Kim1-2/+3
This patch registers all the inodes which have dirty metadata to sync when checkpoint is doing. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-18f2fs: use percpu_counter for page countersJaegeuk Kim1-5/+6
This patch substitutes percpu_counter for atomic_counter when counting various types of pages. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-18f2fs: use bio count instead of F2FS_WRITEBACK page countJaegeuk Kim1-3/+3
This can reduce page counting overhead. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-11f2fs: show # of orphan inodesJaegeuk Kim1-1/+4
This adds debug information for # of orphan inodes. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-15f2fs: show current mount statusJaegeuk Kim1-2/+3
This patch remains the current mount status to f2fs status info. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-04mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov1-3/+3
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-13Merge tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fsLinus Torvalds1-10/+19
Pull f2fs updates from Jaegeuk Kim: "This series adds two ioctls to control cached data and fragmented files. Most of the rest fixes missing error cases and bugs that we have not covered so far. Summary: Enhancements: - support an ioctl to execute online file defragmentation - support an ioctl to flush cached data - speed up shrinking of extent_cache entries - handle broken superblock - refector dirty inode management infra - revisit f2fs_map_blocks to handle more cases - reduce global lock coverage - add detecting user's idle time Major bug fixes: - fix data race condition on cached nat entries - fix error cases of volatile and atomic writes" * tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (87 commits) f2fs: should unset atomic flag after successful commit f2fs: fix wrong memory condition check f2fs: monitor the number of background checkpoint f2fs: detect idle time depending on user behavior f2fs: introduce time and interval facility f2fs: skip releasing nodes in chindless extent tree f2fs: use atomic type for node count in extent tree f2fs: recognize encrypted data in f2fs_fiemap f2fs: clean up f2fs_balance_fs f2fs: remove redundant calls f2fs: avoid unnecessary f2fs_balance_fs calls f2fs: check the page status filled from disk f2fs: introduce __get_node_page to reuse common code f2fs: check node id earily when readaheading node page f2fs: read isize while holding i_mutex in fiemap Revert "f2fs: check the node block address of newly allocated nid" f2fs: cover more area with nat_tree_lock f2fs: introduce max_file_blocks in sbi f2fs crypto: check CONFIG_F2FS_FS_XATTR for encrypted symlink f2fs: introduce zombie list for fast shrinking extent trees ...
2016-01-11f2fs: monitor the number of background checkpointJaegeuk Kim1-1/+2
This patch adds to show the number of background checkpoint. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-01-06fs: use block_device name vsprintf helperDmitry Monakhov1-4/+2
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-12-31f2fs: monitor zombie_tree countJaegeuk Kim1-2/+3
This patch adds an entry to show the number of zombie extent_tree. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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