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2012-06-02Merge tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtdLinus Torvalds86-792/+1775
Pull mtd update from David Woodhouse: - More robust parsing especially of xattr data in JFFS2 - Updates to mxc_nand and gpmi drivers to support new boards and device tree - Improve consistency of information about ECC strength in NAND devices - Clean up partition handling of plat_nand - Support NAND drivers without dedicated access to OOB area - BCH hardware ECC support for OMAP - Other fixes and cleanups, and a few new device IDs Fixed trivial conflict in drivers/mtd/nand/gpmi-nand/gpmi-nand.c due to added include files next to each other. * tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd: (75 commits) mtd: mxc_nand: move ecc strengh setup before nand_scan_tail mtd: block2mtd: fix recursive call of mtd_writev mtd: gpmi-nand: define ecc.strength mtd: of_parts: fix breakage in Kconfig mtd: nand: fix scan_read_raw_oob mtd: docg3 fix in-middle of blocks reads mtd: cfi_cmdset_0002: Slight cleanup of fixup messages mtd: add fixup for S29NS512P NOR flash. jffs2: allow to complete xattr integrity check on first GC scan jffs2: allow to discriminate between recoverable and non-recoverable errors mtd: nand: omap: add support for hardware BCH ecc ARM: OMAP3: gpmc: add BCH ecc api and modes mtd: nand: check the return code of 'read_oob/read_oob_raw' mtd: nand: remove 'sndcmd' parameter of 'read_oob/read_oob_raw' mtd: m25p80: Add support for Winbond W25Q80BW jffs2: get rid of jffs2_sync_super jffs2: remove unnecessary GC pass on sync jffs2: remove unnecessary GC pass on umount jffs2: remove lock_super mtd: gpmi: add gpmi support for mx6q ...
2012-06-02Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86Linus Torvalds11-629/+1416
Pull x86 platform driver updates from Matthew Garrett: "Some significant improvements for the Sony driver on newer machines, but other than that mostly just minor fixes and a patch to remove the broken rfkill code from the Dell driver." * 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (35 commits) apple-gmux: Fix up the suspend/resume patch dell-laptop: Remove rfkill code toshiba_acpi: Fix mis-merge dell-laptop: Add touchpad led support for Dell V3450 acer-wmi: add 3 laptops to video backlight vendor mode quirk table sony-laptop: add touchpad enable/disable function sony-laptop: add missing Fn key combos for 0x100 handlers sony-laptop: add support for more WWAN modems sony-laptop: new keyboard backlight handle sony-laptop: add high speed battery charging function sony-laptop: support automatic resume on lid open sony-laptop: adjust error handling in finding SNC handles sony-laptop: add thermal profiles support sony-laptop: support battery care functions sony-laptop: additional debug statements sony-laptop: improve SNC initialization and acpi notify callback code sony-laptop: use kstrtoul to parse sysfs values sony-laptop: generalise ACPI calls into SNC functions sony-laptop: fix return path when no ACPI buffer is allocated sony-laptop: use soft rfkill status stored in hw ...
2012-06-02Merge branch 'slab/for-linus' of ↵Linus Torvalds2-11/+14
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux Pull slab updates from Pekka Enberg: "Mainly a bunch of SLUB fixes from Joonsoo Kim" * 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: slub: use __SetPageSlab function to set PG_slab flag slub: fix a memory leak in get_partial_node() slub: remove unused argument of init_kmem_cache_node() slub: fix a possible memory leak Documentations: Fix slabinfo.c directory in vm/slub.txt slub: fix incorrect return type of get_any_partial()
2012-06-02Merge branch 'ux500/hickup' of ↵Linus Torvalds9-22/+301
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm fixes for ux500 mismerge mishap from Arnd Bergmann: "The device tree conversion for arm/ux500 in 3.5 turns out to be incomplete because of a mismerge done by Linus Walleij that I failed to notice early enough and that Lee Jones as the original author of those patches did not manage to fix during the -next cycle. While we originally to get a much larger set of ux500 device tree enablement patches merged, this did not happen in time. After some discussion at Linaro Connect conference this week, Lee has been able to do damage control and provide a series to put the broken platform back into usable shape for both DT and non-DT based booting. This series has not been part of linux-next and is based on top of the current state of the upstream kernel rather than an -rc, but this is the best we could manage given the earlier breakage." * 'ux500/hickup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: ux500: Enable probing of pinctrl through Device Tree ARM: ux500: Add support for ab8500 regulators into the Device Tree ARM: ux500: Provide regulator support for SMSC911x via Device Tree ARM: ux500: Allow PRCMU regulator to be probed during a DT enabled boot ARM: ux500: Apply db8500-prcmu regulator information to db8500 Device Tree ARM: ux500: Only initialise STE's UIBs on boards which support them ARM: ux500: Disable platform setup of the ab8500 when DT is enabled ARM: ux500: Use correct format for dynamic IRQ assignment ARM: ux500: Re-enable SMSC911x platform code registration during non-DT boots ARM: ux500: PRCMU related configuration and layout corrections for Device Tree ARM: ux500: Remove DB8500 PRCMU platform registration when DT is enabled ARM: ux500: Disable SMSC911x platform code registration when DT is enabled ARM: ux500: New DT:ed u8500_init_devices for one-by-one device enablement ARM: ux500: New DT:ed snowball_platform_devs for one-by-one device enablement pinctrl-nomadik: Allow Device Tree driver probing
2012-06-02Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds17-1017/+321
Pull drm fixes from Dave Airlie: "A bunch of fixes: - vmware memory corruption - ttm spinlock balance - cirrus/mgag200 work in the presence of efifb and finally Alex and Jerome managed to track down a magic set of bits that on certain rv740 and evergreen cards allow the correct use of the complete set of render backends, this makes the cards operate correctly in a number of scenarios we had issues in before, it also manages to boost speed on benchmarks my large amounts on these specific gpus." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/edid: Make the header fixup threshold tunable drm/radeon: fix regression in UMS CS ioctl drm/vmwgfx: Fix nasty write past alloced memory area drm/ttm: Fix spinlock imbalance drm/radeon: fixup tiling group size and backendmap on r6xx-r9xx (v4) drm/radeon: fix HD6790, HD6570 backend programming drm/radeon: properly program gart on rv740, juniper, cypress, barts, hemlock drm/radeon: fix bank information in tiling config drm/mgag200: kick off conflicting framebuffers earlier. drm/cirrus: kick out conflicting framebuffers earlier cirrus: avoid crash if driver fails to load
2012-06-02Merge tag 'sound-3.5' of ↵Linus Torvalds4-12/+29
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Just a few trivial driver-specific fixes." * tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hdspm - Work around broken DDS value on PCI RME MADI ALSA: usb-audio: fix rate_list memory leak ASoC: fsi: bugfix: ensure dma is terminated ASoC: fsi: bugfix: correct dma area ASoC: fsi: bugfix: enable master clock control on DMA stream ASoC: imx-ssi: Use clk_prepare_enable/clk_disable_unprepare
2012-06-01mtd: mxc_nand: move ecc strengh setup before nand_scan_tailSascha Hauer1-6/+6
Since commit 6a918bade9dab40aaef80559bd1169c69e8d69cb, the mxc_nand driver fails with: Driver must set ecc.strength when using hardware ECC This is because nand_scan_tail checks for correct ecc strength settings, so we must set them up before nand_scan_tail. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: stable@vger.kernel.org [3.4+] Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01mtd: block2mtd: fix recursive call of mtd_writevGabor Juhos1-1/+0
The 'mtd_writev' interface calls the function assigned to the '_write' field of a given mtd device if that is not NULL. The block2mtd driver sets the '_writev' field to the 'mtd_writev' function itself and thus causes a endless loop. This is caused by 1dbebd32562b3c2caeca35960e5cb00bfcc12900 (mtd: harmonize mtd_writev usage). Remove the assignment from the block2mtd driver to fix the issue. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: stable@kernel.org [3.3+] Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01mtd: gpmi-nand: define ecc.strengthMarek Vasut1-0/+5
Fix an issue which was introduced by the recent addition of ecc.strength. The ecc.strength wasn't set in gpmi-nand, resulting in the following crash: [ 2.550000] kernel BUG at drivers/mtd/nand/nand_base.c:3347! ... [ 2.550000] [<c020841c>] (nand_scan_tail+0x328/0x650) from [<c02f68e0>] (gpmi_nand_probe+0x43c/0x5a4) [ 2.550000] [<c02f68e0>] (gpmi_nand_probe+0x43c/0x5a4) from [<c01f6618>] (platform_drv_probe+0x14/0x18) [ 2.550000] [<c01f6618>] (platform_drv_probe+0x14/0x18) from [<c01f55b0>] (driver_probe_device+0x74/0x1fc) [ 2.550000] [<c01f55b0>] (driver_probe_device+0x74/0x1fc) from [<c01f57cc>] (__driver_attach+0x94/0x98) [ 2.550000] [<c01f57cc>] (__driver_attach+0x94/0x98) from [<c01f3d40>] (bus_for_each_dev+0x50/0x80) [ 2.550000] [<c01f3d40>] (bus_for_each_dev+0x50/0x80) from [<c01f4e18>] (bus_add_driver+0x188/0x25c) [ 2.550000] [<c01f4e18>] (bus_add_driver+0x188/0x25c) from [<c01f5a70>] (driver_register+0x78/0x138) [ 2.550000] [<c01f5a70>] (driver_register+0x78/0x138) from [<c043dc7c>] (gpmi_nand_init+0xc/0x30) [ 2.550000] [<c043dc7c>] (gpmi_nand_init+0xc/0x30) from [<c0008824>] (do_one_initcall+0x108/0x17c) [ 2.550000] [<c0008824>] (do_one_initcall+0x108/0x17c) from [<c042a8b8>] (kernel_init+0xfc/0x1bc) [ 2.550000] [<c042a8b8>] (kernel_init+0xfc/0x1bc) from [<c000fab4>] (kernel_thread_exit+0x0/0x8) Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01apple-gmux: Fix up the suspend/resume patchMatthew Garrett1-1/+1
I incorporated the wrong version of the suspend/resume patch for gmux, and so lost David Woodhouse's fix to leave the backlight level unchanged over suspend/resume. This fixes it up to v2. Signed-off-by: Matthew Garrett <mjg@redhat.com>
2012-06-01mtd: of_parts: fix breakage in KconfigFrank Svendsboe1-1/+1
MTD_OF_PARTS and the default setting is not working due to using 'Y' instead of 'y', introduced in commit d6137badeff1ef64b4e0092ec249ebdeaeb3ff37. This made our board, and possibly other boards using DTS defined partitions and not having CONFIG_MTD_OF_PARTS=y defined in the defconfig, fail to mount root. Signed-off-by: Frank Svendsboe <frank.svendsboe@gmail.com> Cc: stable@kernel.org [3.2+] Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01Merge branch 'for-linus' of ↵Linus Torvalds68-1091/+482
git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull third pile of signal handling patches from Al Viro: "This time it's mostly helpers and conversions to them; there's a lot of stuff remaining in the tree, but that'll either go in -rc2 (isolated bug fixes, ideally via arch maintainers' trees) or will sit there until the next cycle." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: x86: get rid of calling do_notify_resume() when returning to kernel mode blackfin: check __get_user() return value whack-a-mole with TIF_FREEZE FRV: Optimise the system call exit path in entry.S [ver #2] FRV: Shrink TIF_WORK_MASK [ver #2] FRV: Prevent syscall exit tracing and notify_resume at end of kernel exceptions new helper: signal_delivered() powerpc: get rid of restore_sigmask() most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set set_restore_sigmask() is never called without SIGPENDING (and never should be) TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is set don't call try_to_freeze() from do_signal() pull clearing RESTORE_SIGMASK into block_sigmask() sh64: failure to build sigframe != signal without handler openrisc: tracehook_signal_handler() is supposed to be called on success new helper: sigmask_to_save() new helper: restore_saved_sigmask() new helpers: {clear,test,test_and_clear}_restore_sigmask() HAVE_RESTORE_SIGMASK is defined on all architectures now
2012-06-01Merge branch 'for-linus' of ↵Linus Torvalds148-1618/+1495
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs changes from Al Viro. "A lot of misc stuff. The obvious groups: * Miklos' atomic_open series; kills the damn abuse of ->d_revalidate() by NFS, which was the major stumbling block for all work in that area. * ripping security_file_mmap() and dealing with deadlocks in the area; sanitizing the neighborhood of vm_mmap()/vm_munmap() in general. * ->encode_fh() switched to saner API; insane fake dentry in mm/cleancache.c gone. * assorted annotations in fs (endianness, __user) * parts of Artem's ->s_dirty work (jff2 and reiserfs parts) * ->update_time() work from Josef. * other bits and pieces all over the place. Normally it would've been in two or three pull requests, but signal.git stuff had eaten a lot of time during this cycle ;-/" Fix up trivial conflicts in Documentation/filesystems/vfs.txt (the 'truncate_range' inode method was removed by the VM changes, the VFS update adds an 'update_time()' method), and in fs/btrfs/ulist.[ch] (due to sparse fix added twice, with other changes nearby). * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (95 commits) nfs: don't open in ->d_revalidate vfs: retry last component if opening stale dentry vfs: nameidata_to_filp(): don't throw away file on error vfs: nameidata_to_filp(): inline __dentry_open() vfs: do_dentry_open(): don't put filp vfs: split __dentry_open() vfs: do_last() common post lookup vfs: do_last(): add audit_inode before open vfs: do_last(): only return EISDIR for O_CREAT vfs: do_last(): check LOOKUP_DIRECTORY vfs: do_last(): make ENOENT exit RCU safe vfs: make follow_link check RCU safe vfs: do_last(): use inode variable vfs: do_last(): inline walk_component() vfs: do_last(): make exit RCU safe vfs: split do_lookup() Btrfs: move over to use ->update_time fs: introduce inode operation ->update_time reiserfs: get rid of resierfs_sync_super reiserfs: mark the superblock as dirty a bit later ...
2012-06-01Merge tag 'ext4_for_linus' of ↵Linus Torvalds28-197/+1784
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull Ext4 updates from Theodore Ts'o: "The major new feature added in this update is Darrick J Wong's metadata checksum feature, which adds crc32 checksums to ext4's metadata fields. There is also the usual set of cleanups and bug fixes." * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (44 commits) ext4: hole-punch use truncate_pagecache_range jbd2: use kmem_cache_zalloc wrapper instead of flag ext4: remove mb_groups before tearing down the buddy_cache ext4: add ext4_mb_unload_buddy in the error path ext4: don't trash state flags in EXT4_IOC_SETFLAGS ext4: let getattr report the right blocks in delalloc+bigalloc ext4: add missing save_error_info() to ext4_error() ext4: add debugging trigger for ext4_error() ext4: protect group inode free counting with group lock ext4: use consistent ssize_t type in ext4_file_write() ext4: fix format flag in ext4_ext_binsearch_idx() ext4: cleanup in ext4_discard_allocated_blocks() ext4: return ENOMEM when mounts fail due to lack of memory ext4: remove redundundant "(char *) bh->b_data" casts ext4: disallow hard-linked directory in ext4_lookup ext4: fix potential integer overflow in alloc_flex_gd() ext4: remove needs_recovery in ext4_mb_init() ext4: force ro mount if ext4_setup_super() fails ext4: fix potential NULL dereference in ext4_free_inodes_counts() ext4/jbd2: add metadata checksumming to the list of supported features ...
2012-06-01x86: get rid of calling do_notify_resume() when returning to kernel modeAl Viro2-13/+10
If we end up calling do_notify_resume() with !user_mode(refs), it does nothing (do_signal() explicitly bails out and we can't get there with TIF_NOTIFY_RESUME in such situations). Then we jump to resume_userspace_sig, which rechecks the same thing and bails out to resume_kernel, thus breaking the loop. It's easier and cheaper to check *before* calling do_notify_resume() and bail out to resume_kernel immediately. And kill the check in do_signal()... Note that on amd64 we can't get there with !user_mode() at all - asm glue takes care of that. Acked-and-reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01blackfin: check __get_user() return valueAl Viro1-16/+14
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01whack-a-mole with TIF_FREEZEAl Viro1-2/+0
blackfin has reintroduced it, completely unused. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01FRV: Optimise the system call exit path in entry.S [ver #2]David Howells1-6/+7
Optimise the system call exit path in entry.S by packing some instructions. Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01FRV: Shrink TIF_WORK_MASK [ver #2]David Howells2-13/+15
Shrink TIF_WORK_MASK so that it will fit in the 12-bit signed immediate operand field of an ANDI instruction. Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01FRV: Prevent syscall exit tracing and notify_resume at end of kernel exceptionsDavid Howells2-11/+3
Move the test for kernel mode processing from do_signal() into entry.S to also prevent system call exit tracing and userspace resumption notification handling happening when returning from kernel exceptions. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helper: signal_delivered()Al Viro34-83/+47
Does block_sigmask() + tracehook_signal_handler(); called when sigframe has been successfully built. All architectures converted to it; block_sigmask() itself is gone now (merged into this one). I'm still not too happy with the signature, but that's a separate story (IMO we need a structure that would contain signal number + siginfo + k_sigaction, so that get_signal_to_deliver() would fill one, signal_delivered(), handle_signal() and probably setup...frame() - take one). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01powerpc: get rid of restore_sigmask()Al Viro4-14/+4
... it's just a call of set_current_blocked() now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from setAl Viro45-141/+17
Only 3 out of 63 do not. Renamed the current variant to __set_current_blocked(), added set_current_blocked() that will exclude unblockable signals, switched open-coded instances to it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01set_restore_sigmask() is never called without SIGPENDING (and never should be)Al Viro8-8/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is setAl Viro13-19/+14
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01don't call try_to_freeze() from do_signal()Al Viro7-28/+0
get_signal_to_deliver() will handle it itself Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01pull clearing RESTORE_SIGMASK into block_sigmask()Al Viro34-387/+130
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01sh64: failure to build sigframe != signal without handlerAl Viro1-1/+1
it's actually "send me SIGSEGV"... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01openrisc: tracehook_signal_handler() is supposed to be called on successAl Viro1-14/+6
... not if sigframe couldn't have been built. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helper: sigmask_to_save()Al Viro31-250/+92
replace boilerplate "should we use ->saved_sigmask or ->blocked?" with calls of obvious inlined helper... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helper: restore_saved_sigmask()Al Viro32-125/+38
first fruits of ..._restore_sigmask() helpers: now we can take boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK and restore the blocked mask from ->saved_mask" into a common helper. Open-coded instances switched... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helpers: {clear,test,test_and_clear}_restore_sigmask()Al Viro8-0/+125
helpers parallel to set_restore_sigmask(), used in the next commits Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01HAVE_RESTORE_SIGMASK is defined on all architectures nowAl Viro5-14/+4
Everyone either defines it in arch thread_info.h or has TIF_RESTORE_SIGMASK and picks default set_restore_sigmask() in linux/thread_info.h. Kill the ifdefs, slap #error in linux/thread_info.h to catch breakage when new ones get merged. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01dell-laptop: Remove rfkill codeMatthew Garrett1-289/+0
The interface just doesn't work on some machines, and Dell haven't been able to tell us either which machines those are or what we should be doing instead. This would be fine, except it results in userspace ending up confused and general sadness. So let's just rip it out for now. Signed-off-by: Matthew Garrett <mjg@redhat.com>
2012-06-01nfs: don't open in ->d_revalidateMiklos Szeredi2-55/+78
NFSv4 can't do reliable opens in d_revalidate, since it cannot know whether a mount needs to be followed or not. It does check d_mountpoint() on the dentry, which can result in a weird error if the VFS found that the mount does not in fact need to be followed, e.g.: # mount --bind /mnt/nfs /mnt/nfs-clone # echo something > /mnt/nfs/tmp/bar # echo x > /tmp/file # mount --bind /tmp/file /mnt/nfs-clone/tmp/bar # cat /mnt/nfs/tmp/bar cat: /mnt/nfs/tmp/bar: Not a directory Which should, by any sane filesystem, result in "something" being printed. So instead do the open in f_op->open() and in the unlikely case that the cached dentry turned out to be invalid, drop the dentry and return EOPENSTALE to let the VFS retry. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: retry last component if opening stale dentryMiklos Szeredi2-2/+36
NFS optimizes away d_revalidates for last component of open. This means that open itself can find the dentry stale. This patch allows the filesystem to return EOPENSTALE and the VFS will retry the lookup on just the last component if possible. If the lookup was done using RCU mode, including the last component, then this is not possible since the parent dentry is lost. In this case fall back to non-RCU lookup. Currently this is not used since NFS will always leave RCU mode. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: nameidata_to_filp(): don't throw away file on errorMiklos Szeredi1-3/+5
If open fails, don't put the file. This allows it to be reused if open needs to be retried. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: nameidata_to_filp(): inline __dentry_open()Miklos Szeredi1-2/+18
Copy __dentry_open() into nameidata_to_filp(). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_dentry_open(): don't put filpMiklos Szeredi1-1/+2
Move put_filp() out to __dentry_open(), the only caller now. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: split __dentry_open()Miklos Szeredi2-14/+34
Split __dentry_open() into two functions: do_dentry_open() - does most of the actual work, doesn't put file on failure open_check_o_direct() - after a successful open, checks direct_IO method This will allow i_op->atomic_open to do just the file initialization and leave the direct_IO checking to the VFS. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last() common post lookupMiklos Szeredi1-31/+3
Now the post lookup code can be shared between O_CREAT and plain opens since they are essentially the same. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): add audit_inode before openMiklos Szeredi1-0/+1
This allows this code to be shared between O_CREAT and plain opens. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): only return EISDIR for O_CREATMiklos Szeredi1-1/+1
This allows this code to be shared between O_CREAT and plain opens. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): check LOOKUP_DIRECTORYMiklos Szeredi1-0/+3
Check for ENOTDIR before finishing open. This allows this code to be shared between O_CREAT and plain opens. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): make ENOENT exit RCU safeMiklos Szeredi1-2/+4
This will allow this code to be used in RCU mode. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: make follow_link check RCU safeMiklos Szeredi1-2/+10
This will allow this code to be used in RCU mode. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): use inode variableMiklos Szeredi1-3/+5
Use helper variable instead of path->dentry->d_inode before complete_walk(). This will allow this code to be used in RCU mode. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): inline walk_component()Miklos Szeredi1-5/+30
Copy walk_component() into do_lookup(). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: do_last(): make exit RCU safeMiklos Szeredi1-1/+1
Allow returning from do_last() with LOOKUP_RCU still set on the "out:" and "exit:" labels. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01vfs: split do_lookup()Miklos Szeredi1-14/+45
Split do_lookup() into two functions: lookup_fast() - does cached lookup without i_mutex lookup_slow() - does lookup with i_mutex Both follow managed dentries. The new functions are needed by atomic_open. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 23:50:25 +0300