- 15 8月, 2012 1 次提交
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由 David S. Miller 提交于
On a 2-node machine with 256GB of ram we get 512 lines of console output, which is just too much. This mimicks Yinghai Lu's x86 commit c2b91e2e (x86_64/mm: check and print vmemmap allocation continuous) except that we aren't ever going to get contiguous block pointers in between calls so just print when the virtual address or node changes. This decreases the output by an order of 16. Also demote this to KERN_DEBUG. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 02 8月, 2012 20 次提交
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由 Jiri Kosina 提交于
There are multiple errors in how sys_sparc64_personality() handles personality flags stored in top three bytes. - directly comparing current->personality against PER_LINUX32 doesn't work in cases when any of the personality flags stored in the top three bytes are used. - directly forcefully setting personality to PER_LINUX32 or PER_LINUX discards any flags stored in the top three bytes Fix the first one by properly using personality() macro to compare only PER_MASK bytes. Fix the second one by setting only the bits that should be set, instead of overwriting the whole value. Signed-off-by: NJiri Kosina <jkosina@suse.cz> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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git://git.linux-mips.org/pub/scm/ralf/upstream-linus由 Linus Torvalds 提交于
Pull MIPS updates from Ralf Baechle: "The lion share of this pull request are fixes for clk-related breakage caused by other changes during this merge window. For some platforms the fix was as simple as selecting HAVE_CLK, for others like the Loongson 2 significant restructuring was required. The remainder are changes required to get the Lantiq code to work again." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Loongson 2: Sort out clock managment. MIPS: Loongson 1: more clk support and add select HAVE_CLK MIPS: txx9: Fix redefinition of clk_* by adding select HAVE_CLK MIPS: BCM63xx: Fix redefinition of clk_* by adding select HAVE_CLK MIPS: AR7: Fix redefinition of clk_* by adding select HAVE_CLK MIPS: Lantiq: Platform specific CLK fixup MIPS: Lantiq: Add device_tree_init function MIPS: Lantiq: Fix interface clock and PCI control register offset
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git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml由 Linus Torvalds 提交于
Pull UML fixes from Richard Weinberger: "This patch set contains mostly fixes and cleanups. The UML tty driver uses now tty_port and is no longer broken like hell :-)" * 'for-linus-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Add arch/x86/um to MAINTAINERS um: pass siginfo to guest process um: fix ubd_file_size for read-only files um: pull interrupt_end() into userspace() um: split syscall_trace(), pass pt_regs to it um: switch UPT_SET_RETURN_VALUE and regs_return_value to pt_regs um: set BLK_CGROUP=y in defconfig um: remove count_lock um: fully use tty_port um: Remove dead code um: remove line_ioctl() TTY: um/line, use tty from tty_port TTY: um/line, add tty_port
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git://git.linaro.org/people/rmk/linux-arm由 Linus Torvalds 提交于
Pull ARM DMA engine updates from Russell King: "This looks scary at first glance, but what it is is: - a rework of the sa11x0 DMA engine driver merged during the previous cycle, to extract a common set of helper functions for DMA engine implementations. - conversion of amba-pl08x.c to use these helper functions. - addition of OMAP DMA engine driver (using these helper functions), and conversion of some of the OMAP DMA users to use DMA engine. Nothing in the helper functions is ARM specific, so I hope that other implementations can consolidate some of their code by making use of these helpers. This has been sitting in linux-next most of the merge cycle, and has been tested by several OMAP folk. I've tested it on sa11x0 platforms, and given it my best shot on my broken platforms which have the amba-pl08x controller. The last point is the addition to feature-removal-schedule.txt, which will have a merge conflict. Between myself and TI, we're planning to remove the old TI DMA implementation next year." Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt and drivers/dma/{Kconfig,Makefile} * 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits) ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails Add feature removal of old OMAP private DMA implementation mtd: omap2: remove private DMA API implementation mtd: omap2: add DMA engine support spi: omap2-mcspi: remove private DMA API implementation spi: omap2-mcspi: add DMA engine support ARM: omap: remove mmc platform data dma_mask and initialization mmc: omap: remove private DMA API implementation mmc: omap: add DMA engine support mmc: omap_hsmmc: remove private DMA API implementation mmc: omap_hsmmc: add DMA engine support dmaengine: omap: add support for cyclic DMA dmaengine: omap: add support for setting fi dmaengine: omap: add support for returning residue in tx_state method dmaengine: add OMAP DMA engine driver dmaengine: sa11x0-dma: add cyclic DMA support dmaengine: sa11x0-dma: fix DMA residue support dmaengine: PL08x: ensure all descriptors are freed when channel is released dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking ...
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git://git.linaro.org/people/rmk/linux-arm由 Linus Torvalds 提交于
Pull ARM audit/signal updates from Russell King: "ARM audit/signal handling updates from Al and Will. This improves on the work Viro did last merge window, and sorts out some of the issues found with that work." * 'audit' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7475/1: sys_trace: allow all syscall arguments to be updated via ptrace ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS ARM: 7473/1: deal with handlerless restarts without leaving the kernel ARM: 7472/1: pull all work_pending logics into C function ARM: 7471/1: Revert "7442/1: Revert "remove unused restart trampoline"" ARM: 7470/1: Revert "7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK""
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git://git.linaro.org/people/rmk/linux-arm由 Linus Torvalds 提交于
Pull ARM fixes from Russell King: "This fixes various issues found during July" * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7479/1: mm: avoid NULL dereference when flushing gate_vma with VIVT caches ARM: Fix undefined instruction exception handling ARM: 7480/1: only call smp_send_stop() on SMP ARM: 7478/1: errata: extend workaround for erratum #720789 ARM: 7477/1: vfp: Always save VFP state in vfp_pm_suspend on UP ARM: 7476/1: vfp: only clear vfp state for current cpu in vfp_pm_suspend ARM: 7468/1: ftrace: Trace function entry before updating index ARM: 7467/1: mutex: use generic xchg-based implementation for ARMv6+ ARM: 7466/1: disable interrupt before spinning endlessly ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option
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由 Richard Weinberger 提交于
Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Martin Pärtel 提交于
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: NMartin Pärtel <martin.partel@gmail.com> Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Martin Pärtel 提交于
Made ubd_file_size not request write access. Fixes use of read-only images. Signed-off-by: NMartin Pärtel <martin.partel@gmail.com> Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> [richard@nod.at: Fixed some minor build issues] Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NRichard Weinberger <richard@nod.at>
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git://github.com/schandinat/linux-2.6由 Linus Torvalds 提交于
Pull fbdev updates from Florian Tobias Schandinat: - large updates for OMAP - support for LCD3 overlay manager (omap5) - omapdss output cleanup - removal of passive matrix LCD support as there are no drivers for such panels for DSS or DSS2 and nobody complained (cleanup) - large updates for SH Mobile - overlay support - separating MERAM (cache) from framebuffer driver - some updates for Exynos and da8xx-fb - various other small patches * tag 'fbdev-updates-for-3.6' of git://github.com/schandinat/linux-2.6: (78 commits) da8xx-fb: fix compile issue due to missing include fbdev: Make pixel_to_pat() failure mode more friendly da8xx-fb: do not turn ON LCD backlight unless LCDC is enabled fbdev: sh_mobile_lcdc: Fix vertical panning step video: exynos mipi dsi: Fix mipi dsi regulators handling issue video: da8xx-fb: do clock reset of revision 2 LCDC before enabling arm: da850: configure LCDC fifo threshold video: da8xx-fb: configure FIFO threshold to reduce underflow errors video: da8xx-fb: fix flicker due to 1 frame delay in updated frame video: da8xx-fb rev2: fix disabling of palette completion interrupt da8xx-fb: add missing FB_BLANK operations video: exynos_dp: use usleep_range instead of delay video: exynos_dp: check the only INTERLANE_ALIGN_DONE bit during Link Training fb: epson1355fb: Fix section mismatch video: exynos_dp: fix wrong DPCD address during Link Training video/smscufx: fix line counting in fb_write aty128fb: Fix coding style issues fbdev: sh_mobile_lcdc: Fix pan offset computation in YUV mode fbdev: sh_mobile_lcdc: Fix overlay registers update during pan operation fbdev: sh_mobile_lcdc: Support horizontal panning ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound由 Linus Torvalds 提交于
Pull sound fixes from Takashi Iwai: "A collection of small fixes that have been found recently. Most of the commits are regression fixes in HD-audio and some other random drivers." * tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: snd-usb: fix clock source validity index ALSA: hda - Fix mute-LED GPIO initialization for IDT codecs ALSA: hda - Add descriptions for missing IDT 92HD83x models ALSA: hda - Fix polarity of mute LED on HP Mini 210 ALSA: es1688 - freeup resources on init failure ALSA: hda - Workaround for silent output on VAIO Z with ALC889 ALSA: hda - Fix WARNING from HDMI/DP parser ALSA: hda - Detach from converter at closing in patch_hdmi.c ALSA: hda - Fix mute-LED GPIO setup for HP Mini 210 ALSA: mpu401: Fix missing initialization of irq field ALSA: hda - Fix invalid D3 of headphone DAC on VT202x codecs
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs由 Linus Torvalds 提交于
Pull second vfs pile from Al Viro: "The stuff in there: fsfreeze deadlock fixes by Jan (essentially, the deadlock reproduced by xfstests 068), symlink and hardlink restriction patches, plus assorted cleanups and fixes. Note that another fsfreeze deadlock (emergency thaw one) is *not* dealt with - the series by Fernando conflicts a lot with Jan's, breaks userland ABI (FIFREEZE semantics gets changed) and trades the deadlock for massive vfsmount leak; this is going to be handled next cycle. There probably will be another pull request, but that stuff won't be in it." Fix up trivial conflicts due to unrelated changes next to each other in drivers/{staging/gdm72xx/usb_boot.c, usb/gadget/storage_common.c} * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits) delousing target_core_file a bit Documentation: Correct s_umount state for freeze_fs/unfreeze_fs fs: Remove old freezing mechanism ext2: Implement freezing btrfs: Convert to new freezing mechanism nilfs2: Convert to new freezing mechanism ntfs: Convert to new freezing mechanism fuse: Convert to new freezing mechanism gfs2: Convert to new freezing mechanism ocfs2: Convert to new freezing mechanism xfs: Convert to new freezing code ext4: Convert to new freezing mechanism fs: Protect write paths by sb_start_write - sb_end_write fs: Skip atime update on frozen filesystem fs: Add freezing handling to mnt_want_write() / mnt_drop_write() fs: Improve filesystem freezing handling switch the protection of percpu_counter list to spinlock nfsd: Push mnt_want_write() outside of i_mutex btrfs: Push mnt_want_write() outside of i_mutex fat: Push mnt_want_write() outside of i_mutex ...
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由 Ralf Baechle 提交于
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: NRalf Baechle <ralf@linux-mips.org>
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git://git.kernel.dk/linux-block由 Linus Torvalds 提交于
Pull block driver changes from Jens Axboe: - Making the plugging support for drivers a bit more sane from Neil. This supersedes the plugging change from Shaohua as well. - The usual round of drbd updates. - Using a tail add instead of a head add in the request completion for ndb, making us find the most completed request more quickly. - A few floppy changes, getting rid of a duplicated flag and also running the floppy init async (since it takes forever in boot terms) from Andi. * 'for-3.6/drivers' of git://git.kernel.dk/linux-block: floppy: remove duplicated flag FD_RAW_NEED_DISK blk: pass from_schedule to non-request unplug functions. block: stack unplug blk: centralize non-request unplug handling. md: remove plug_cnt feature of plugging. block/nbd: micro-optimization in nbd request completion drbd: announce FLUSH/FUA capability to upper layers drbd: fix max_bio_size to be unsigned drbd: flush drbd work queue before invalidate/invalidate remote drbd: fix potential access after free drbd: call local-io-error handler early drbd: do not reset rs_pending_cnt too early drbd: reset congestion information before reporting it in /proc/drbd drbd: report congestion if we are waiting for some userland callback drbd: differentiate between normal and forced detach drbd: cleanup, remove two unused global flags floppy: Run floppy initialization asynchronous
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git://git.kernel.dk/linux-block由 Linus Torvalds 提交于
Pull core block IO bits from Jens Axboe: "The most complicated part if this is the request allocation rework by Tejun, which has been queued up for a long time and has been in for-next ditto as well. There are a few commits from yesterday and today, mostly trivial and obvious fixes. So I'm pretty confident that it is sound. It's also smaller than usual." * 'for-3.6/core' of git://git.kernel.dk/linux-block: block: remove dead func declaration block: add partition resize function to blkpg ioctl block: uninitialized ioc->nr_tasks triggers WARN_ON block: do not artificially constrain max_sectors for stacking drivers blkcg: implement per-blkg request allocation block: prepare for multiple request_lists block: add q->nr_rqs[] and move q->rq.elvpriv to q->nr_rqs_elvpriv blkcg: inline bio_blkcg() and friends block: allocate io_context upfront block: refactor get_request[_wait]() block: drop custom queue draining used by scsi_transport_{iscsi|fc} mempool: add @gfp_mask to mempool_create_node() blkcg: make root blkcg allocation use %GFP_KERNEL blkcg: __blkg_lookup_create() doesn't need radix preload
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git://neil.brown.name/md由 Linus Torvalds 提交于
Pull md updates from NeilBrown. * 'for-next' of git://neil.brown.name/md: DM RAID: Add support for MD RAID10 md/RAID1: Add missing case for attempting to repair known bad blocks. md/raid5: For odirect-write performance, do not set STRIPE_PREREAD_ACTIVE. md/raid1: don't abort a resync on the first badblock. md: remove duplicated test on ->openers when calling do_md_stop() raid5: Add R5_ReadNoMerge flag which prevent bio from merging at block layer md/raid1: prevent merging too large request md/raid1: read balance chooses idlest disk for SSD md/raid1: make sequential read detection per disk based MD RAID10: Export md_raid10_congested MD: Move macros from raid1*.h to raid1*.c MD RAID1: rename mirror_info structure MD RAID10: rename mirror_info structure MD RAID10: Fix compiler warning. raid5: add a per-stripe lock raid5: remove unnecessary bitmap write optimization raid5: lockless access raid5 overrided bi_phys_segments raid5: reduce chance release_stripe() taking device_lock
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由 J. Bruce Fields 提交于
In commit 3b6e2723 ("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: NJ. Bruce Fields <bfields@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 8月, 2012 19 次提交
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由 Yoichi Yuasa 提交于
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: NYoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: NJohn Crispin <blogic@openwrt.org> Acked-by: NKelvin Cheung <keguang.zhang@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/4143/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Yoichi Yuasa 提交于
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: NYoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: NJohn Crispin <blogic@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/4142/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Yoichi Yuasa 提交于
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: NYoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: NJohn Crispin <blogic@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/4141/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Yoichi Yuasa 提交于
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: NYoichi Yuasa <yuasa@linux-mips.org> Cc: linux-mips@linux-mips.org Reviewed-by: NJohn Crispin <blogic@openwrt.org> Acked-by: NFlorian Fainelli <florian@openwrt.org> Patchwork: https://patchwork.linux-mips.org/patch/4140/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 John Crispin 提交于
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: NJohn Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4117/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 John Crispin 提交于
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: NJohn Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4116/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 John Crispin 提交于
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: NJohn Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4113/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Al Viro 提交于
* 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: NAl Viro <viro@zeniv.linux.org.uk>
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由 Jonathan Brassow 提交于
Support the MD RAID10 personality through dm-raid.c Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NNeilBrown <neilb@suse.de>
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由 NeilBrown 提交于
Pull in pre-requisites for adding raid10 support to dm-raid.
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由 Yuanhan Liu 提交于
__generic_unplug_device() function is removed with commit 7eaceacc, which forgot to remove the declaration at meantime. Here remove it. Signed-off-by: NYuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Vivek Goyal 提交于
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: NVivek Goyal <vgoyal@redhat.com> Signed-off-by: NPhillip Susi <psusi@ubuntu.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Olof Johansson 提交于
Hi, I'm using the old-fashioned 'dump' backup tool, and I noticed that it spews the below warning as of 3.5-rc1 and later (3.4 is fine): [ 10.886893] ------------[ cut here ]------------ [ 10.886904] WARNING: at include/linux/iocontext.h:140 copy_process+0x1488/0x1560() [ 10.886905] Hardware name: Bochs [ 10.886906] Modules linked in: [ 10.886908] Pid: 2430, comm: dump Not tainted 3.5.0-rc7+ #27 [ 10.886908] Call Trace: [ 10.886911] [<ffffffff8107ce8a>] warn_slowpath_common+0x7a/0xb0 [ 10.886912] [<ffffffff8107ced5>] warn_slowpath_null+0x15/0x20 [ 10.886913] [<ffffffff8107c088>] copy_process+0x1488/0x1560 [ 10.886914] [<ffffffff8107c244>] do_fork+0xb4/0x340 [ 10.886918] [<ffffffff8108effa>] ? recalc_sigpending+0x1a/0x50 [ 10.886919] [<ffffffff8108f6b2>] ? __set_task_blocked+0x32/0x80 [ 10.886920] [<ffffffff81091afa>] ? __set_current_blocked+0x3a/0x60 [ 10.886923] [<ffffffff81051db3>] sys_clone+0x23/0x30 [ 10.886925] [<ffffffff8179bd73>] stub_clone+0x13/0x20 [ 10.886927] [<ffffffff8179baa2>] ? system_call_fastpath+0x16/0x1b [ 10.886928] ---[ end trace 32a14af7ee6a590b ]--- Reproducing is easy, I can hit it on a KVM system with a very basic config (x86_64 make defconfig + enable the drivers needed). To hit it, just install dump (on debian/ubuntu, not sure what the package might be called on Fedora), and: dump -o -f /tmp/foo / You'll see the warning in dmesg once it forks off the I/O process and starts dumping filesystem contents. I bisected it down to the following commit: commit f6e8d01b Author: Tejun Heo <tj@kernel.org> Date: Mon Mar 5 13:15:26 2012 -0800 block: add io_context->active_ref Currently ioc->nr_tasks is used to decide two things - whether an ioc is done issuing IOs and whether it's shared by multiple tasks. This patch separate out the first into ioc->active_ref, which is acquired and released using {get|put}_io_context_active() respectively. This will be used to associate bio's with a given task. This patch doesn't introduce any visible behavior change. Signed-off-by: NTejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: NJens Axboe <axboe@kernel.dk> It seems like the init of ioc->nr_tasks was removed in that patch, so it starts out at 0 instead of 1. Tejun, is the right thing here to add back the init, or should something else be done? The below patch removes the warning, but I haven't done any more extensive testing on it. Signed-off-by: NOlof Johansson <olof@lixom.net> Acked-by: NTejun Heo <tj@kernel.org> Cc: stable@kernel.org Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Mike Snitzer 提交于
blk_set_stacking_limits is intended to allow stacking drivers to build up the limits of the stacked device based on the underlying devices' limits. But defaulting 'max_sectors' to BLK_DEF_MAX_SECTORS (1024) doesn't allow the stacking driver to inherit a max_sectors larger than 1024 -- due to blk_stack_limits' use of min_not_zero. It is now clear that this artificial limit is getting in the way so change blk_set_stacking_limits's max_sectors to UINT_MAX (which allows stacking drivers like dm-multipath to inherit 'max_sectors' from the underlying paths). Reported-by: NVijay Chauhan <vijay.chauhan@netapp.com> Tested-by: NVijay Chauhan <vijay.chauhan@netapp.com> Signed-off-by: NMike Snitzer <snitzer@redhat.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Daniel Mack 提交于
uac_clock_source_is_valid() uses the control selector value to access the bmControls bitmap of the clock source unit. This is wrong, as control selector values start from 1, while the bitmap uses all available bits. In other words, "Clock Validity Control" is stored in D3..2, not D5..4 of the clock selector unit's bmControls. Signed-off-by: NDaniel Mack <zonque@gmail.com> Reported-by: NAndreas Koch <andreas@akdesigninc.com> Cc: stable@kernel.org Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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git://git.secretlab.ca/git/linux-2.6由 Linus Torvalds 提交于
Pull irqdomain changes from Grant Likely: "Round of refactoring and enhancements to irq_domain infrastructure. This series starts the process of simplifying irqdomain. The ultimate goal is to merge LEGACY, LINEAR and TREE mappings into a single system, but had to back off from that after some last minute bugs. Instead it mainly reorganizes the code and ensures that the reverse map gets populated when the irq is mapped instead of the first time it is looked up. Merging of the irq_domain types is deferred to v3.7 In other news, this series adds helpers for creating static mappings on a linear or tree mapping." * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6: irqdomain: Improve diagnostics when a domain mapping fails irqdomain: eliminate slow-path revmap lookups irqdomain: Fix irq_create_direct_mapping() to test irq_domain type. irqdomain: Eliminate dedicated radix lookup functions irqdomain: Support for static IRQ mapping and association. irqdomain: Always update revmap when setting up a virq irqdomain: Split disassociating code into separate function irq_domain: correct a minor wrong comment for linear revmap irq_domain: Standardise legacy/linear domain selection irqdomain: Make ops->map hook optional irqdomain: Remove unnecessary test for IRQ_DOMAIN_MAP_LEGACY irqdomain: Simple NUMA awareness. devicetree: add helper inline for retrieving a node's full name
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由 Linus Torvalds 提交于
Merge Andrew's second set of patches: - MM - a few random fixes - a couple of RTC leftovers * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (120 commits) rtc/rtc-88pm80x: remove unneed devm_kfree rtc/rtc-88pm80x: assign ret only when rtc_register_driver fails mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables tmpfs: distribute interleave better across nodes mm: remove redundant initialization mm: warn if pg_data_t isn't initialized with zero mips: zero out pg_data_t when it's allocated memcg: gix memory accounting scalability in shrink_page_list mm/sparse: remove index_init_lock mm/sparse: more checks on mem_section number mm/sparse: optimize sparse_index_alloc memcg: add mem_cgroup_from_css() helper memcg: further prevent OOM with too many dirty pages memcg: prevent OOM with too many dirty pages mm: mmu_notifier: fix freed page still mapped in secondary MMU mm: memcg: only check anon swapin page charges for swap cache mm: memcg: only check swap cache pages for repeated charging mm: memcg: split swapin charge function into private and public part mm: memcg: remove needless !mm fixup to init_mm when charging mm: memcg: remove unneeded shmem charge type ...
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git://github.com/awilliam/linux-vfio由 Linus Torvalds 提交于
Pull VFIO core from Alex Williamson: "This series includes the VFIO userspace driver interface for the 3.6 kernel merge window. This driver is intended to provide a secure interface for device access using IOMMU protection for applications like assignment of physical devices to virtual machines. Qemu will be the first user of this interface, enabling assignment of PCI devices to Qemu guests. This interface is intended to eventually replace the x86-specific assignment mechanism currently available in KVM. This interface has the advantage of being more secure, by working with IOMMU groups to ensure device isolation and providing it's own filtered resource access mechanism, and also more flexible, in not being x86 or KVM specific (extensions to enable POWER are already working). This driver is originally the work of Tom Lyon, but has since been handed over to me and gone through a complete overhaul thanks to the input from David Gibson, Ben Herrenschmidt, Chris Wright, Joerg Roedel, and others. This driver has been available in linux-next for the last month." Paul Mackerras says: "I would be glad to see it go in since we want to use it with KVM on PowerPC. If possible we'd like the PowerPC bits for it to go in as well." * tag 'vfio-for-v3.6' of git://github.com/awilliam/linux-vfio: vfio: Add PCI device driver vfio: Type1 IOMMU implementation vfio: Add documentation vfio: VFIO core
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random由 Linus Torvalds 提交于
Pull random subsystem patches from Ted Ts'o: "This patch series contains a major revamp of how we collect entropy from interrupts for /dev/random and /dev/urandom. The goal is to addresses weaknesses discussed in the paper "Mining your Ps and Qs: Detection of Widespread Weak Keys in Network Devices", by Nadia Heninger, Zakir Durumeric, Eric Wustrow, J. Alex Halderman, which will be published in the Proceedings of the 21st Usenix Security Symposium, August 2012. (See https://factorable.net for more information and an extended version of the paper.)" Fix up trivial conflicts due to nearby changes in drivers/{mfd/ab3100-core.c, usb/gadget/omap_udc.c} * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: (33 commits) random: mix in architectural randomness in extract_buf() dmi: Feed DMI table to /dev/random driver random: Add comment to random_initialize() random: final removal of IRQF_SAMPLE_RANDOM um: remove IRQF_SAMPLE_RANDOM which is now a no-op sparc/ldc: remove IRQF_SAMPLE_RANDOM which is now a no-op [ARM] pxa: remove IRQF_SAMPLE_RANDOM which is now a no-op board-palmz71: remove IRQF_SAMPLE_RANDOM which is now a no-op isp1301_omap: remove IRQF_SAMPLE_RANDOM which is now a no-op pxa25x_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op omap_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op goku_udc: remove IRQF_SAMPLE_RANDOM which was commented out uartlite: remove IRQF_SAMPLE_RANDOM which is now a no-op drivers: hv: remove IRQF_SAMPLE_RANDOM which is now a no-op xen-blkfront: remove IRQF_SAMPLE_RANDOM which is now a no-op n2_crypto: remove IRQF_SAMPLE_RANDOM which is now a no-op pda_power: remove IRQF_SAMPLE_RANDOM which is now a no-op i2c-pmcmsp: remove IRQF_SAMPLE_RANDOM which is now a no-op input/serio/hp_sdc.c: remove IRQF_SAMPLE_RANDOM which is now a no-op mfd: remove IRQF_SAMPLE_RANDOM which is now a no-op ...
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