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2012-08-14ALSA: hda - Fix possible compile warnings regarding CONFIG_PMTakashi Iwai1-5/+2
Replace with a proper ifdef check of CONFIG_PM_SLEEP in hda_intel.c. But other places in HD-audio driver are still marked with CONFIG_PM, since these can be called for power-saving even without CONFIG_PM_SLEEP. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-13ALSA: hda - show ICT/KAE control bitsWang Xingchao2-1/+12
Enable two debug options for S/PDIF Converter Control. KAE: Keep Alive Enable; ICT: IEC Coding Type. Signed-off-by: Wang Xingchao <xingchao.wang@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-09ALSA: hda - Fix forgotten ifdef CONFIG_SND_HDA_PATCH_LOADERTakashi Iwai1-0/+2
The firmware callback must be protected by that ifdef. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-09ALSA: hda - Deferred probing with request_firmware_nowait()Takashi Iwai2-5/+39
For processing the firmware handling properly for built-in kernels, implement an asynchronous firmware loading with request_firmware_nowait(). This means that the codec probing is deferred when the patch option is specified. Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-09ALSA: hda - Load firmware in hda_intel.cTakashi Iwai3-32/+38
This is a preliminary work for the deferred probing for request_firmware() errors at init. This patch moves the call of request_firmware() to hda_intel.c, and call it in the earlier stage of probing rather than azx_probe_continue(). Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-09ALSA: hda - Fix pop noise in headphones on S3 for Asus X55A, X55VDavid Henningsson1-0/+8
To turn off pin control for the pin was tested, and helped against this issue. BugLink: https://bugs.launchpad.net/bugs/1034779 Tested-by: Chih-Hsyuan Ho <chih.ho@canonical.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-08ALSA: hda - Fix double quirk for Quanta FL1 / Lenovo IdeapadDavid Henningsson1-2/+3
The same ID is twice in the quirk table, so the second one is not used. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Cc: <stable@vger.kernel.org> [v3.2+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-07ALSA: hda - Fix ugly debug prints with CONFIG_SND_VERBOSE_PRINTK=yTakashi Iwai1-3/+2
When CONFIG_SND_VERBOSE_PRINTK=y is set, the debug print in hda_auto_parser.c looks really ugly like: ALSA sound/pci/hda/hda_auto_parser.c:331 mono: mono_out=0x0 ALSA sound/pci/hda/hda_auto_parser.c:334 dig-out=0x12/0x0 ALSA sound/pci/hda/hda_auto_parser.c:335 inputs: ALSA sound/pci/hda/hda_auto_parser.c:339 Mic=0x11ALSA sound/pci/hda/hda_auto_parser.c:339 Line=0x10 ALSA sound/pci/hda/hda_auto_parser.c:341 ALSA sound/pci/hda/hda_auto_parser.c:343 dig-in=0x13 Better to put one item at each line. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-07ALSA: hda - remove redundant auto quirks for conexant 506xDavid Henningsson1-5/+0
Now that the auto model is the default, these quirks are redundant and can be removed. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-07ALSA: hda - remove quirk for Dell Vostro 1015David Henningsson1-1/+0
This computer is confirmed working with model=auto on kernel 3.2. Also, parsing fails with hda-emu with the current model. Cc: stable@kernel.org (3.2+) Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-07ALSA: hda - add dock support for Thinkpad X230Felix Kaechele1-0/+1
As with the ThinkPad Models X230 Tablet and T530 the X230 needs a qurik to correctly set up the pins for the dock port. Signed-off-by: Felix Kaechele <felix@fetzig.org> Cc: <stable@vger.kernel.org> [v3.2+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-06ALSA: hda - Fix regression of HDMI codec probingTakashi Iwai1-3/+9
The commit c4bfe94a causes a regression on some codecs at probing. Since this was just a workaround to shut up a kernel warning, it'd be better to revert and fix properly. So we ended up with re-adding the cleanup callback. Tested-and-reported-by: Matt Horan <matt@matthoran.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-06ALSA: hda - add dock support for Thinkpad T430sPhilipp A. Mohrenweiser1-0/+1
Add a model/fixup string "lenovo-dock", for Thinkpad T430s, to allow sound in docking station. Tested on Lenovo T430s with ThinkPad Mini Dock Plus Series 3 Cc: stable@kernel.org Signed-off-by: Philipp A. Mohrenweiser <phiamo@googlemail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-06ALSA: print small buffers via %*ph[C]Andy Shevchenko2-6/+4
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-03ALSA: isa: Move snd_legacy_find_free_ioport to initval.hOndrej Zary3-27/+16
Move snd_legacy_find_free_ioport() function back to initval.h as it is used by two drivers. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-03ALSA: emu10k1: Avoid access to invalid pages when period=1Takashi Iwai1-1/+4
When period=1, the driver tries to allocate a bit bigger buffer than requested by the user due to the irq latency tolerance. This may lead to accesses over the actually allocated pages. This patch adds a check of the page index and assigns the silent page when it's over the given buffer size. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-03ALSA: PCM: Fix possible memory leaks in the error pathTakashi Iwai1-1/+1
When the first page allocation failed for sgbuf, it leaks the records that have been formerly allocated. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-02Linux 3.6-rc1Linus Torvalds1-2/+2
2012-08-02mm: remove node_start_pfn checking in new WARN_ON for nowLinus Torvalds1-1/+1
Borislav Petkov reports that the new warning added in commit 88fdf75d1bb5 ("mm: warn if pg_data_t isn't initialized with zero") triggers for him, and it is the node_start_pfn field that has already been initialized once. The call trace looks like this: x86_64_start_kernel -> x86_64_start_reservations -> start_kernel -> setup_arch -> paging_init -> zone_sizes_init -> free_area_init_nodes -> free_area_init_node and (with the warning replaced by debug output), Borislav sees On node 0 totalpages: 4193848 DMA zone: 64 pages used for memmap DMA zone: 6 pages reserved DMA zone: 3890 pages, LIFO batch:0 DMA32 zone: 16320 pages used for memmap DMA32 zone: 798464 pages, LIFO batch:31 Normal zone: 52736 pages used for memmap Normal zone: 3322368 pages, LIFO batch:31 free_area_init_node: pgdat->node_start_pfn: 4423680 <---- On node 1 totalpages: 4194304 Normal zone: 65536 pages used for memmap Normal zone: 4128768 pages, LIFO batch:31 free_area_init_node: pgdat->node_start_pfn: 8617984 <---- On node 2 totalpages: 4194304 Normal zone: 65536 pages used for memmap Normal zone: 4128768 pages, LIFO batch:31 free_area_init_node: pgdat->node_start_pfn: 12812288 <---- On node 3 totalpages: 4194304 Normal zone: 65536 pages used for memmap Normal zone: 4128768 pages, LIFO batch:31 so remove the bogus warning for now to avoid annoying people. Minchan Kim is looking at it. Reported-by: Borislav Petkov <bp@amd64.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-08-02ARM: mmp: add missing irqs.hHaojian Zhuang1-0/+1
arch/arm/mach-mmp/gplugd.c:195:13: error: ‘MMP_NR_IRQS’ undeclared here (not in a function) make[1]: *** [arch/arm/mach-mmp/gplugd.o] Error 1 Include <mach/irqs.h> to fix this issue. Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-08-02arm: mvebu: fix typo in .dtsi comment for Armada XP SoCsThomas Petazzoni1-1/+1
The comment was wrongly referring to Armada 370 while the file is related to Armada XP. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-08-02ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumesBarry Song1-3/+3
The only way to write LATCHED registers to write LATCH_BIT to LATCH register, that will latch COUNTER into LATCHED.e.g. writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH); Writing values to LATCHED registers directly is useless at all. Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-08-02libceph: fix crypto key null deref, memory leakSylvain Munaut2-1/+3
Avoid crashing if the crypto key payload was NULL, as when it was not correctly allocated and initialized. Also, avoid leaking it. Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-08-02ceph: simplify+fix atomic_openSage Weil3-66/+40
The initial ->atomic_open op was carried over from the old intent code, which was incomplete and didn't really work. Replace it with a fresh method. In particular: * always attempt to do an atomic open+lookup, both for the create case and for lookups of existing files. * fix symlink handling by returning 1 to the VFS so that we can follow the link to its destination. This fixes a longstanding ceph bug (#2392). Signed-off-by: Sage Weil <sage@inktank.com>
2012-08-02ASoC: core: Fix check before defaulting to regmapMark Brown1-1/+1
Check if the chip has provided a write operation (which is mandatory for I/O) rather than looking for control data as some of the MFDs use a global for this. Also skip the attempt if there's no regmap available by device in case things get confused by the attempt to default. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
2012-08-02ALSA: hda - Support dock on Lenovo Thinkpad T530 with ALC269VCTakashi Iwai1-0/+1
Lenovo Thinkpad T530 with ALC269VC codec has a dock port but BIOS doesn't set up the pins properly. Enable the pins as well as on Thinkpad X230 Tablet. Reported-and-tested-by: Mario <anyc@hadiko.de> Cc: <stable@vger.kernel.org> [v3.2+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-08-02sh: explicitly include sh_dma.h in setup-sh7722.cGuennadi Liakhovetski1-0/+1
setup-sh7722.c defines several objects, whose types are defined in sh_dma.h, so, it has to be included explicitly. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-08-02um: Add arch/x86/um to MAINTAINERSRichard Weinberger1-0/+1
Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02um: pass siginfo to guest processMartin Pärtel10-34/+71
UML guest processes now get correct siginfo_t for SIGTRAP, SIGFPE, SIGILL and SIGBUS. Specifically, si_addr and si_code are now correct where previously they were si_addr = NULL and si_code = 128. Signed-off-by: Martin Pärtel <martin.partel@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02um: fix ubd_file_size for read-only filesMartin Pärtel1-1/+1
Made ubd_file_size not request write access. Fixes use of read-only images. Signed-off-by: Martin Pärtel <martin.partel@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02md/dm-raid: DM_RAID should select MD_RAID10NeilBrown1-2/+3
Now that DM_RAID supports raid10, it needs to select that code to ensure it is included. Cc: Jonathan Brassow <jbrassow@redhat.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02md/raid1: submit IO from originating thread instead of md thread.NeilBrown2-4/+55
queuing writes to the md thread means that all requests go through the one processor which may not be able to keep up with very high request rates. So use the plugging infrastructure to submit all requests on unplug. If a 'schedule' is needed, we fall back on the old approach of handing the requests to the thread for it to handle. Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02raid5: raid5d handle stripe in batch wayShaohua Li1-13/+32
Let raid5d handle stripe in batch way to reduce conf->device_lock locking. Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02raid5: make_request use batch stripe releaseShaohua Li2-3/+60
make_request() does stripe release for every stripe and the stripe usually has count 1, which makes previous release_stripe() optimization not work. In my test, this release_stripe() becomes the heaviest pleace to take conf->device_lock after previous patches applied. Below patch makes stripe release batch. All the stripes will be released in unplug. The STRIPE_ON_UNPLUG_LIST bit is to protect concurrent access stripe lru. Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02um: pull interrupt_end() into userspace()Al Viro2-8/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02um: split syscall_trace(), pass pt_regs to itAl Viro3-43/+34
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> [richard@nod.at: Fixed some minor build issues] Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-01um: switch UPT_SET_RETURN_VALUE and regs_return_value to pt_regsAl Viro3-5/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-01MIPS: Loongson 2: Sort out clock managment.Ralf Baechle7-51/+33
For unexplainable reasons the Loongson 2 clock API was implemented in a module so fixing this involved shifting large amounts of code around. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01locks: remove unused lm_release_privateJ. Bruce Fields3-8/+1
In commit 3b6e2723f32d ("locks: prevent side-effects of locks_release_private before file_lock is initialized") we removed the last user of lm_release_private without removing the field itself. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-08-01MIPS: Loongson 1: more clk support and add select HAVE_CLKYoichi Yuasa2-0/+17
This fixes a redefinition of clk_*: arch/mips/loongson1/common/clock.c:23:13: error: redefinition of 'clk_get' include/linux/clk.h:281:27: note: previous definition of 'clk_get' was here arch/mips/loongson1/common/clock.c:41:15: error: redefinition of 'clk_get_rate' include/linux/clk.h:302:29: note: previous definition of 'clk_get_rate' was here make[3]: *** [arch/mips/loongson1/common/clock.o] Error 1 Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: John Crispin <blogic@openwrt.org> Acked-by: Kelvin Cheung <keguang.zhang@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/4143/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01MIPS: txx9: Fix redefinition of clk_* by adding select HAVE_CLKYoichi Yuasa1-0/+1
arch/mips/txx9/generic/setup.c:87:13: error: redefinition of 'clk_get' include/linux/clk.h:281:27: note: previous definition of 'clk_get' was here arch/mips/txx9/generic/setup.c:97:5: error: redefinition of 'clk_enable' include/linux/clk.h:295:19: note: previous definition of 'clk_enable' was here arch/mips/txx9/generic/setup.c:103:6: error: redefinition of 'clk_disable' include/linux/clk.h:300:20: note: previous definition of 'clk_disable' was here arch/mips/txx9/generic/setup.c:108:15: error: redefinition of 'clk_get_rate' include/linux/clk.h:302:29: note: previous definition of 'clk_get_rate' was here arch/mips/txx9/generic/setup.c:114:6: error: redefinition of 'clk_put' include/linux/clk.h:291:20: note: previous definition of 'clk_put' was here make[3]: *** [arch/mips/txx9/generic/setup.o] Error 1 Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: John Crispin <blogic@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/4142/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01MIPS: BCM63xx: Fix redefinition of clk_* by adding select HAVE_CLKYoichi Yuasa1-0/+1
arch/mips/bcm63xx/clk.c:249:5: error: redefinition of 'clk_enable' include/linux/clk.h:295:19: note: previous definition of 'clk_enable' was here arch/mips/bcm63xx/clk.c:259:6: error: redefinition of 'clk_disable' include/linux/clk.h:300:20: note: previous definition of 'clk_disable' was here arch/mips/bcm63xx/clk.c:268:15: error: redefinition of 'clk_get_rate' include/linux/clk.h:302:29: note: previous definition of 'clk_get_rate' was here arch/mips/bcm63xx/clk.c:275:13: error: redefinition of 'clk_get' include/linux/clk.h:281:27: note: previous definition of 'clk_get' was here arch/mips/bcm63xx/clk.c:302:6: error: redefinition of 'clk_put' include/linux/clk.h:291:20: note: previous definition of 'clk_put' was here make[2]: *** [arch/mips/bcm63xx/clk.o] Error 1 Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: John Crispin <blogic@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/4141/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01MIPS: AR7: Fix redefinition of clk_* by adding select HAVE_CLKYoichi Yuasa1-0/+1
arch/mips/ar7/clock.c:420:5: error: redefinition of 'clk_enable' include/linux/clk.h:295:19: note: previous definition of 'clk_enable' was here arch/mips/ar7/clock.c:426:6: error: redefinition of 'clk_disable' include/linux/clk.h:300:20: note: previous definition of 'clk_disable' was here arch/mips/ar7/clock.c:431:15: error: redefinition of 'clk_get_rate' include/linux/clk.h:302:29: note: previous definition of 'clk_get_rate' was here arch/mips/ar7/clock.c:437:13: error: redefinition of 'clk_get' include/linux/clk.h:281:27: note: previous definition of 'clk_get' was here arch/mips/ar7/clock.c:454:6: error: redefinition of 'clk_put' include/linux/clk.h:291:20: note: previous definition of 'clk_put' was here make[2]: *** [arch/mips/ar7/clock.o] Error 1 Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: John Crispin <blogic@openwrt.org> Acked-by: Florian Fainelli <florian@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/4140/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01MIPS: Lantiq: Platform specific CLK fixupJohn Crispin1-0/+5
As we use CLKDEV_LOOKUP but dont have support for COMMON_CLK yet, we need to provide our own version of of_clk_get_from_provider(). Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4117/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01MIPS: Lantiq: Add device_tree_init functionJohn Crispin1-0/+22
Add a lantiq specific version of device_tree_init. The generic MIPS version was removed by. commit 594e966bc412d64eec9282d28ce511bdd62fea39 Author: David Daney <david.daney@cavium.com> Date: Thu Jul 5 18:12:38 2012 +0200 MIPS: Prune some target specific code out of prom.c Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4116/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01MIPS: Lantiq: Fix interface clock and PCI control register offsetJohn Crispin1-21/+28
The XRX200 based SoC have a different register offset for the interface clock and PCI control registers. This patch detects the SoC and sets the register offset at runtime. This make PCI work on the VR9 SoC. Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4113/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-08-01delousing target_core_file a bitAl Viro1-27/+5
* set_fs(KERNEL_DS) + getname() is probably the weirdest implementation of strdup() I've seen. Especially since they don't to copy it at all... * filp_open() never returns NULL; it's ERR_PTR(-E...) on failure. * file->f_dentry is never going to be NULL, TYVM. * match_strdup() + snprintf() + kfree() is a bloody weird way to spell match_strlcpy(). Pox on cargo-cult programmers... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-01DM RAID: Add support for MD RAID10Jonathan Brassow2-5/+116
Support the MD RAID10 personality through dm-raid.c Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-01block: remove dead func declarationYuanhan Liu1-1/+0
__generic_unplug_device() function is removed with commit 7eaceaccab5f40bbfda044629a6298616aeaed50, which forgot to remove the declaration at meantime. Here remove it. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-08-01block: add partition resize function to blkpg ioctlVivek Goyal5-9/+132
Add a new operation code (BLKPG_RESIZE_PARTITION) to the BLKPG ioctl that allows altering the size of an existing partition, even if it is currently in use. This patch converts hd_struct->nr_sects into sequence counter because One might extend a partition while IO is happening to it and update of nr_sects can be non-atomic on 32bit machines with 64bit sector_t. This can lead to issues like reading inconsistent size of a partition. Sequence counter have been used so that readers don't have to take bdev mutex lock as we call sector_in_part() very frequently. Now all the access to hd_struct->nr_sects should happen using sequence counter read/update helper functions part_nr_sects_read/part_nr_sects_write. There is one exception though, set_capacity()/get_capacity(). I think theoritically race should exist there too but this patch does not modify set_capacity()/get_capacity() due to sheer number of call sites and I am afraid that change might break something. I have left that as a TODO item. We can handle it later if need be. This patch does not introduce any new races as such w.r.t set_capacity()/get_capacity(). v2: Add CONFIG_LBDAF test to UP preempt case as suggested by Phillip. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Phillip Susi <psusi@ubuntu.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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