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* xfs: replace xfs_buf_geterror() with bp->b_errorChandra Seetharaman2011-08-122-3/+3
| | | | | | | | Since we just checked bp for NULL, it is ok to replace xfs_buf_geterror() with bp->b_error in these places. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alex Elder <aelder@sgi.com>
* xfs: Check the return value of xfs_buf_read() for NULLChandra Seetharaman2011-08-122-0/+8
| | | | | | | | | Check the return value of xfs_buf_read() for NULL and return ENOMEM if it is NULL. This is necessary in a few spots to avoid subsequent code blindly dereferencing the null buffer pointer. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alex Elder <aelder@sgi.com>
* "xfs: fix error handling for synchronous writes" revisitedAjeet Yadav2011-08-101-1/+0
| | | | | | | | | | | | | | | | | | | | | | xfs: fix for hang during synchronous buffer write error If removed storage while synchronous buffer write underway, "xfslogd" hangs. Detailed log http://oss.sgi.com/archives/xfs/2011-07/msg00740.html Related work bfc60177f8ab509bc225becbb58f7e53a0e33e81 "xfs: fix error handling for synchronous writes" Given that xfs_bwrite actually does the shutdown already after waiting for the b_iodone completion and given that we actually found that calling xfs_force_shutdown from inside xfs_buf_iodone_callbacks was a major contributor the problem it better to drop this call. Signed-off-by: Ajeet Yadav <ajeet.yadav.77@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* xfs: set cursor in xfs_ail_splice() even when AIL was emptyAlex Elder2011-08-091-38/+29
| | | | | | | | | | | | | | In xfs_ail_splice(), if a cursor is provided it is updated to point to the last item on the list being spliced into the AIL. But if the AIL was found to be empty, the cursor (if provided) is just initialized instead. There is no reason the empty AIL case needs to be treated any differently. And treating it the same way allows this code to be rearranged a bit, with a somewhat tidier result. Signed-off-by: Alex Elder <aelder@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* Merge branch 'master' of ↵Alex Elder2011-08-0822-189/+165
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
| * Merge branch 'for-linus' of ↵Linus Torvalds2011-08-011-3/+3
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set VFS: Reorganise shrink_dcache_for_umount_subtree() after demise of dcache_lock VFS: Remove dentry->d_lock locking from shrink_dcache_for_umount_subtree() VFS: Remove detached-dentry counter from shrink_dcache_for_umount_subtree() switch posix_acl_chmod() to umode_t switch posix_acl_from_mode() to umode_t switch posix_acl_equiv_mode() to umode_t * switch posix_acl_create() to umode_t * block: initialise bd_super in bdget() vfs: avoid call to inode_lru_list_del() if possible vfs: avoid taking inode_hash_lock on pipes and sockets vfs: conditionally call inode_wb_list_del() VFS: Fix automount for negative autofs dentries Btrfs: load the key from the dir item in readdir into a fake dentry devtmpfs: missing initialialization in never-hit case hppfs: missing include
| | * xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not setMarkus Trippelsdorf2011-08-011-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 4e34e719e45, that takes the ACL checks to common code, accidentely broke the build when CONFIG_FS_POSIX_ACL is not set: CC fs/xfs/linux-2.6/xfs_iops.o fs/xfs/linux-2.6/xfs_iops.c:1025:14: error: ‘xfs_get_acl’ undeclared here (not in a function) Fix this by declaring xfs_get_acl a static inline function. Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * switch posix_acl_equiv_mode() to umode_t *Al Viro2011-08-011-1/+1
| | | | | | | | | | | | | | | | | | ... so that &inode->i_mode could be passed to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * switch posix_acl_create() to umode_t *Al Viro2011-08-011-2/+2
| | | | | | | | | | | | | | | | | | so we can pass &inode->i_mode to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not setMarkus Trippelsdorf2011-07-291-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 4e34e719e45, that takes the ACL checks to common code, accidentely broke the build when CONFIG_FS_POSIX_ACL is not set: CC fs/xfs/linux-2.6/xfs_iops.o fs/xfs/linux-2.6/xfs_iops.c:1025:14: error: ‘xfs_get_acl’ undeclared here (not in a function) Fix this by declaring xfs_get_acl a static inline function. Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Alex Elder <aelder@sgi.com>
| * | Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds2011-07-274-13/+33
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | * 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: optimize the negative xattr caching xfs: prevent against ioend livelocks in xfs_file_fsync xfs: flag all buffers as metadata xfs: encapsulate a block of debug code
| | * xfs: optimize the negative xattr cachingChristoph Hellwig2011-07-261-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the addition of file capabilities every write needs to read xattrs to check if we have any capabilities to clear. In Linux 3.0 Andi Kleen added a flag to cache the fact that we do not have any attributes on an inode. Make sure to already mark a file as not having any attributes when reading it from disk in case it doesn't even have an attribute fork. Based on an earlier patch from Andi Kleen. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
| | * xfs: prevent against ioend livelocks in xfs_file_fsyncChristoph Hellwig2011-07-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to take some locks to prevent new ioends from coming in when we wait for all existing ones to go away. Up to Linux 3.0 that was done using the i_mutex held by the VFS fsync code, but now that we are called without it we need to take care of it ourselves. Use the I/O lock instead of i_mutex just like we do in other places. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
| | * xfs: flag all buffers as metadataChristoph Hellwig2011-07-261-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that REQ_META bios aren't treated specially in the CFQ I/O schedule anymore, we can tag all buffers as metadata to make blktrace traces more meaningful. Note that we use buffers also to zero out partial blocks in the preallocation / hole punching code, and while they operate on data blocks the zeros written certainly aren't data. I think this case is borderline metadata enough to not bother special casing it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
| | * xfs: encapsulate a block of debug codeAlex Elder2011-07-261-11/+21
| | | | | | | | | | | | | | | | | | | | | | | | Pull into a helper function some debug-only code that validates a xfs_da_blkinfo structure that's been read from disk. Signed-off-by: Alex Elder <aelder@sgi.com> Reviewed-by: Christoph Hellwig <hch@infradead.org>
| * | xfs: fix misspelled S_IS...()Al Viro2011-07-262-7/+7
| | | | | | | | | | | | | | | | | | mode_t is not a bitmap... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | xfs: get rid of open-coded S_ISREG(), etc.Al Viro2011-07-2610-34/+33
| |/ | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * Merge branch 'for-linus' of ↵Linus Torvalds2011-07-251-1/+1
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
| | * fs: Merge split stringsJean Delvare2011-07-221-1/+1
| | | | | | | | | | | | | | | | | | | | | No idea why these were split in the first place... Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | fs: take the ACL checks to common codeChristoph Hellwig2011-07-254-26/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the ->check_acl method with a ->get_acl method that simply reads an ACL from disk after having a cache miss. This means we can replace the ACL checking boilerplate code with a single implementation in namei.c. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | kill boilerplates around posix_acl_create_masq()Al Viro2011-07-252-18/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | new helper: posix_acl_create(&acl, gfp, mode_p). Replaces acl with modified clone, on failure releases acl and replaces with NULL. Returns 0 or -ve on error. All callers of posix_acl_create_masq() switched. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | kill boilerplate around posix_acl_chmod_masq()Al Viro2011-07-251-10/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | new helper: posix_acl_chmod(&acl, gfp, mode). Replaces acl with modified clone or with NULL if that has failed; returns 0 or -ve on error. All callers of posix_acl_chmod_masq() switched to that - they'd been doing exactly the same thing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | xfs: cache negative ACLs if there is no attribute forkChristoph Hellwig2011-07-252-12/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | Always set up a negative ACL cache entry if the inode doesn't have an attribute fork. That behaves much better than doing this check inside ->check_acl. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | vfs: move ACL cache lookup into generic codeLinus Torvalds2011-07-251-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This moves logic for checking the cached ACL values from low-level filesystems into generic code. The end result is a streamlined ACL check that doesn't need to load the inode->i_op->check_acl pointer at all for the common cached case. The filesystems also don't need to check for a non-blocking RCU walk case in their acl_check() functions, because that is all handled at a VFS layer. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | xfs: Fix wrong return value of xfs_file_aio_writeMarkus Trippelsdorf2011-07-251-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The fsync prototype change commit 02c24a82187d accidentally overwrote the ssize_t return value of xfs_file_aio_write with 0 for SYNC type writes. Fix this by checking if an error occured when calling xfs_file_fsync and only change the return value in this case. In addition xfs_file_fsync actually returns a normal negative error, so fix this, too. Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | Merge branch 'for-linus' of ↵Linus Torvalds2011-07-227-69/+60
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (107 commits) vfs: use ERR_CAST for err-ptr tossing in lookup_instantiate_filp isofs: Remove global fs lock jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directory fix IN_DELETE_SELF on overwriting rename() on ramfs et.al. mm/truncate.c: fix build for CONFIG_BLOCK not enabled fs:update the NOTE of the file_operations structure Remove dead code in dget_parent() AFS: Fix silly characters in a comment switch d_add_ci() to d_splice_alias() in "found negative" case as well simplify gfs2_lookup() jfs_lookup(): don't bother with . or .. get rid of useless dget_parent() in btrfs rename() and link() get rid of useless dget_parent() in fs/btrfs/ioctl.c fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers drivers: fix up various ->llseek() implementations fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek Ext4: handle SEEK_HOLE/SEEK_DATA generically Btrfs: implement our own ->llseek fs: add SEEK_HOLE and SEEK_DATA flags reiserfs: make reiserfs default to barrier=flush ... Fix up trivial conflicts in fs/xfs/linux-2.6/xfs_super.c due to the new shrinker callout for the inode cache, that clashed with the xfs code to start the periodic workers later.
| | * | fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik2011-07-201-9/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | fs: move inode_dio_done to the end_io handlerChristoph Hellwig2011-07-201-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For filesystems that delay their end_io processing we should keep our i_dio_count until the the processing is done. Enable this by moving the inode_dio_done call to the end_io handler if one exist. Note that the actual move to the workqueue for ext4 and XFS is not done in this patch yet, but left to the filesystem maintainers. At least for XFS it's not needed yet either as XFS has an internal equivalent to i_dio_count. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | xfs: make use of new shrinker callout for the inode cacheDave Chinner2011-07-203-56/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert the inode reclaim shrinker to use the new per-sb shrinker operations. This allows much bigger reclaim batches to be used, and allows the XFS inode cache to be shrunk in proportion with the VFS dentry and inode caches. This avoids the problem of the VFS caches being shrunk significantly before the XFS inode cache is shrunk resulting in imbalances in the caches during reclaim. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | ->permission() sanitizing: don't pass flags to ->check_acl()Al Viro2011-07-202-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | not used in the instances anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | ->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()Al Viro2011-07-201-1/+1
| | |/ | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | xfs: Remove the macro XFS_BUFTARG_NAMEChandra Seetharaman2011-07-254-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | Remove the definition and usages of the macro XFS_BUFTARG_NAME. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove the macro XFS_BUF_TARGETChandra Seetharaman2011-07-255-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | Remove the definition and usages of the macro XFS_BUF_TARGET Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove the macro XFS_BUF_SET_TARGETChandra Seetharaman2011-07-252-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the macro XFS_BUF_SET_TARGET. hch: As all the buffer allocator already set ->b_target it should be safe to simply remove these calls. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | Replace the macro XFS_BUF_ISPINNED with helper xfs_buf_ispinnedChandra Seetharaman2011-07-256-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the macro XFS_BUF_ISPINNED with an inline helper function xfs_buf_ispinned, and change all its usages. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove the macro XFS_BUF_SET_PTRChandra Seetharaman2011-07-253-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | Remove the definition and usages of the macro XFS_BUF_SET_PTR. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove the macro XFS_BUF_PTRChandra Seetharaman2011-07-2516-47/+45
| | | | | | | | | | | | | | | | | | | | | | | | Remove the definition and usages of the macro XFS_BUF_PTR. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove macro XFS_BUF_SET_STARTChandra Seetharaman2011-07-252-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | Remove the definition and usage of the macro XFS_BUF_SET_START. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove macro XFS_BUF_HOLDChandra Seetharaman2011-07-254-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | Remove the definition and usage of the macro XFS_BUF_HOLD Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove macro XFS_BUF_BUSY and familyChandra Seetharaman2011-07-257-26/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the definitions and uses of the macros XFS_BUF_BUSY, XFS_BUF_UNBUSY, and XFS_BUF_ISBUSY. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove the macro XFS_BUF_ERROR and familyChandra Seetharaman2011-07-2516-55/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the definitions and usage of the macros XFS_BUF_ERROR, XFS_BUF_GETERROR and XFS_BUF_ISERROR. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | xfs: Remove the macro XFS_BUF_BFLAGSChandra Seetharaman2011-07-253-3/+2
|/ / | | | | | | | | | | | | | | Remove the definition of the macro XFS_BUF_BFLAGS and its usage. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: add size update tracepoint to IO completionDave Chinner2011-07-202-4/+9
| | | | | | | | | | | | | | | | For improving insight into IO completion behaviour. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: convert AIL cursors to use struct list_headDave Chinner2011-07-202-55/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The list of active AIL cursors uses a roll-your-own linked list with special casing for the AIL push cursor. Simplify this code by replacing the list with standard struct list_head lists, and use a separate list_head to track the active cursors. This allows us to treat the AIL push cursor as a generic cursor rather than as a special case, further simplifying the code. Further, fix the duplicate push cursor initialisation that the special case handling was hiding, and clean up all the comments around the active cursor list handling. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: remove confusing ail cursor wrapperDave Chinner2011-07-201-31/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | xfs_trans_ail_cursor_set() doesn't set the cursor to the current log item, it sets it to the next item. There is already a function for doing this - xfs_trans_ail_cursor_next() - and the _set function is simply a two line wrapper. Remove it and open code the setting of the cursor in the two locations that call it to remove the confusion. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: use a cursor for bulk AIL insertionDave Chinner2011-07-203-28/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delayed logging can insert tens of thousands of log items into the AIL at the same LSN. When the committing of log commit records occur, we can get insertions occurring at an LSN that is not at the end of the AIL. If there are thousands of items in the AIL on the tail LSN, each insertion has to walk the AIL to find the correct place to insert the new item into the AIL. This can consume large amounts of CPU time and block other operations from occurring while the traversals are in progress. To avoid this repeated walk, use a AIL cursor to record where we should be inserting the new items into the AIL without having to repeat the walk. The cursor infrastructure already provides this functionality for push walks, so is a simple extension of existing code. While this will not avoid the initial walk, it will avoid repeating it tens of thousands of times during a single checkpoint commit. This version includes logic improvements from Christoph Hellwig. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: failure mapping nfs fh to inode should return ESTALEJ. Bruce Fields2011-07-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On xfs exports, nfsd is incorrectly returning ENOENT instead of ESTALE on attempts to use a filehandle of a deleted file (spotted with pynfs test PUTFH3). The ENOENT was coming from xfs_iget. (It's tempting to wonder whether we should just map all xfs_iget errors to ESTALE, but I don't believe so--xfs_iget can also return ENOMEM at least, which we wouldn't want mapped to ESTALE.) While we're at it, the other return of ENOENT in xfs_nfs_get_inode() also looks wrong. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: Remove the second parameter to xfs_sb_count()Chandra Seetharaman2011-07-203-12/+7
| | | | | | | | | | | | | | | | | | | | Remove the second parameter to xfs_sb_count() since all callers of the function set them. Also, fix the header comment regarding it being called periodically. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alex Elder <aelder@sgi.com>
* | xfs: remove the dead XFS_DABUF_DEBUG codeChristoph Hellwig2011-07-132-67/+12
| | | | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Alex Elder <aelder@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* | xfs: remove leftovers of the old btree tracing codeChristoph Hellwig2011-07-1311-621/+19
| | | | | | | | | | | | | | | | | | | | Remove various bits left over from the old kdb-only btree tracing code, but leave the actual trace point stubs in place to ease adding new event based btree tracing. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Alex Elder <aelder@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
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