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* [PATCH] FS: speed up rw_verify_area()Eric Dumazet2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | oprofile hunting showed a stall in rw_verify_area(), because of triple indirection and potential cache misses. (file->f_path.dentry->d_inode->i_flock) By moving initialization of 'struct inode' pointer before the pos/count sanity tests, we allow the compiler and processor to perform two loads by anticipation, reducing stall, without prefetch() hints. Even x86 arch has enough registers to not use temporary variables and not increase text size. I validated this patch running a bench and studied oprofile changes, and absolute perf of the test program. Results of my epoll_pipe_bench (source available on request) on a Pentium-M 1.6 GHz machine Before : # ./epoll_pipe_bench -l 30 -t 20 Avg: 436089 evts/sec read_count=8843037 write_count=8843040 21.218390 samples per call (best value out of 10 runs) After : # ./epoll_pipe_bench -l 30 -t 20 Avg: 470980 evts/sec read_count=9549871 write_count=9549894 21.216694 samples per call (best value out of 10 runs) oprofile CPU_CLK_UNHALTED events gave a reduction from 5.3401 % to 2.5851 % for the rw_verify_area() function. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] warning fix: unsigned->signedTomasz Kvarsin2007-02-12
| | | | | | | | | | | | While compiling my code with -Wconversion using gcc-trunk, I always get a bunch of warrning from headers, here is fix for them: __getblk is alawys called with unsigned argument, but it takes signed, the same story with __bread,__breadahead and so on. Signed-off-by: Tomasz Kvarsin Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] reiserfs: Use ARRAY_SIZE macro when appropriateAhmed S. Darwish2007-02-12
| | | | | | | | Use ARRAY_SIZE macro already defined in kernel.h Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] inotify: read return val fixNick Piggin2007-02-12
| | | | | | | | | | | | | | | | | | | | | | Fix for inotify read bug (bugzilla.kernel.org #6999) Problem Description: When reading from an inotify device with an insufficient sized buffer, read(2) will return 0 with no errno set. This is because of an logically incorrect action from the user program thus should return an more logical value. My suggestion is return -EINVAL as for bind(2). This patch is based on the proposal from Ryan <wolf0403@hotmail.com>, and feedback from John McCutchan <john@johnmccutchan.com>. Return -EINVAL if we have not passed in enough buffer space to read a single inotify event, rather than 0 which indicates that there is nothing to read. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: "John McCutchan" <john@johnmccutchan.com> Cc: Ryan <wolf0403@hotmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] remove sb->s_files and file_list_lock usage in dquot.cChristoph Hellwig2007-02-12
| | | | | | | | | | | | | | | | | | | Iterate over sb->s_inodes instead of sb->s_files in add_dquot_ref. This reduces list search and lock hold time aswell as getting rid of one of the few uses of file_list_lock which Ingo identified as a scalability problem. Previously we called dq_op->initialize for every inode handing of a writeable file that wasn't initialized before. Now we're calling it for every inode that has a non-zero i_writecount, aka a writeable file descriptor refering to it. Thanks a lot to Jan Kara for running this patch through his quota test harness. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] move remove_dquot_ref to dqout.cChristoph Hellwig2007-02-12
| | | | | | | | | | | Remove_dquot_ref can move to dqout.c instead of beeing in inode.c under #ifdef CONFIG_QUOTA. Also clean the resulting code up a tiny little bit by testing sb->dq_op earlier - it's constant over a filesystems lifetime. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Fix d_path for lazy unmountsAndreas Gruenbacher2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a bugfix to d_path. First, when d_path() hits a lazily unmounted mount point, it tries to prepend the name of the lazily unmounted dentry to the path name. It gets this wrong, and also overwrites the slash that separates the name from the following pathname component. This is demonstrated by the attached test case, which prints "getcwd returned d_path-bugsubdir" with the bug. The correct result would be "getcwd returned d_path-bug/subdir". It could be argued that the name of the root dentry should not be part of the result of d_path in the first place. On the other hand, what the unconnected namespace was once reachable as may provide some useful hints to users, and so that seems okay. Second, it isn't always possible to tell from the __d_path result whether the specified root and rootmnt (i.e., the chroot) was reached: lazy unmounts of bind mounts will produce a path that does start with a non-slash so we can tell from that, but other lazy unmounts will produce a path that starts with a slash, just like "ordinary" paths. The attached patch cleans up __d_path() to fix the bug with overlapping pathname components. It also adds a @fail_deleted argument, which allows to get rid of some of the mess in sys_getcwd(). Grabbing the dcache_lock can then also be moved into __d_path(). The patch also makes sure that paths will only start with a slash for paths which are connected to the root and rootmnt. The @fail_deleted argument could be added to d_path() as well: this would allow callers to recognize deleted files, without having to resort to the ambiguous check for the " (deleted)" string at the end of the pathnames. This is not currently done, but it might be worthwhile. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Neil Brown <neilb@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] NTFS: rename incorrect check of NTFS_DEBUG with just DEBUGRobert P. J. Day2007-02-12
| | | | | | | | | | Replace the incorrect debugging check of "#ifdef NTFS_DEBUG" with just "#ifdef DEBUG". Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Acked-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] register_chrdev_region() don't hand out the LOCAL/EXPERIMENTAL majorsAndrew Morton2007-02-12
| | | | | | | | | | | | | As pointed out in http://bugzilla.kernel.org/show_bug.cgi?id=7922, dynamic chardev major allocation can hand out majors which LANANA has defined as being for local/experimental use. Cc: Torben Mathiasen <device@lanana.org> Cc: Greg KH <greg@kroah.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Tomas Klas <tomas.klas@mepatek.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Make XFS use BH_Unwritten and BH_Delay correctlyDavid Chinner2007-02-12
| | | | | | | | | | | Don't hide buffer_unwritten behind buffer_delay() and remove the hack that clears unexpected buffer_unwritten() states now that it can't happen. Signed-off-by: Dave Chinner <dgc@sgi.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Timothy Shimmin <tes@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Make BH_Unwritten a first class bufferhead flag V2David Chinner2007-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, XFS uses BH_PrivateStart for flagging unwritten extent state in a bufferhead. Recently, I found the long standing mmap/unwritten extent conversion bug, and it was to do with partial page invalidation not clearing the unwritten flag from bufferheads attached to the page but beyond EOF. See here for a full explaination: http://oss.sgi.com/archives/xfs/2006-12/msg00196.html The solution I have checked into the XFS dev tree involves duplicating code from block_invalidatepage to clear the unwritten flag from the bufferhead(s), and then calling block_invalidatepage() to do the rest. Christoph suggested that this would be better solved by pushing the unwritten flag into the common buffer head flags and just adding the call to discard_buffer(): http://oss.sgi.com/archives/xfs/2006-12/msg00239.html The following patch makes BH_Unwritten a first class citizen. Signed-off-by: Dave Chinner <dgc@sgi.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds2007-02-11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://oss.sgi.com:8090/xfs/xfs-2.6: (33 commits) [XFS] Don't use kmap in xfs_iozero. [XFS] Remove a bunch of unused functions from XFS. [XFS] Remove unused arguments from the XFS_BTREE_*_ADDR macros. [XFS] Remove unused header files for MAC and CAP checking functionality. [XFS] Make freeze code a little cleaner. [XFS] Remove unused argument to xfs_bmap_finish [XFS] Clean up use of VFS attr flags [XFS] Remove useless memory barrier [XFS] XFS sysctl cleanups [XFS] Fix assertion in xfs_attr_shortform_remove(). [XFS] Fix callers of xfs_iozero() to zero the correct range. [XFS] Ensure a frozen filesystem has a clean log before writing the dummy [XFS] Fix sub-block zeroing for buffered writes into unwritten extents. [XFS] Re-initialize the per-cpu superblock counters after recovery. [XFS] Fix block reservation changes for non-SMP systems. [XFS] Fix block reservation mechanism. [XFS] Make growfs work for amounts greater than 2TB [XFS] Fix inode log item use-after-free on forced shutdown [XFS] Fix attr2 corruption with btree data extents [XFS] Workaround log space issue by increasing XFS_TRANS_PUSH_AIL_RESTARTS ...
| * [XFS] Don't use kmap in xfs_iozero.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | kmap() is inefficient and does not scale well. kmap_atomic() is a better choice. Use the generic wrapper function instead of open coding the kmap-memset-dcache flush-kunmap stuff. SGI-PV: 960904 SGI-Modid: xfs-linux-melb:xfs-kern:28041a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Remove a bunch of unused functions from XFS.Eric Sandeen2007-02-10
| | | | | | | | | | | | | | | | | | | | | | Patch provided by Eric Sandeen (sandeen@sandeen.net). SGI-PV: 960897 SGI-Modid: xfs-linux-melb:xfs-kern:28038a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Remove unused arguments from the XFS_BTREE_*_ADDR macros.Eric Sandeen2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It makes it incrementally clearer to read the code when the top of a macro spaghetti-pile only receives the 3 arguments it uses, rather than 2 extra ones which are not used. Also when you start pulling this thread out of the sweater (i.e. remove unused args from XFS_BTREE_*_ADDR), a couple other third arms etc fall off too. If they're not used in the macro, then they sometimes don't need to be passed to the function calling the macro either, etc.... Patch provided by Eric Sandeen (sandeen@sandeen.net). SGI-PV: 960197 SGI-Modid: xfs-linux-melb:xfs-kern:28037a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Remove unused header files for MAC and CAP checking functionality.Eric Sandeen2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xfs_mac.h and xfs_cap.h provide definitions and macros that aren't used anywhere in XFS at all. They are left-overs from "to be implement at some point in the future" functionality that Irix XFS has. If this functionality ever goes into Linux, it will be provided at a different layer, most likely through the security hooks in the kernel so we will never need this functionality in XFS. Patch provided by Eric Sandeen (sandeen@sandeen.net). SGI-PV: 960895 SGI-Modid: xfs-linux-melb:xfs-kern:28036a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Make freeze code a little cleaner.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | Fixes a few small issues (mostly cosmetic) that were picked up during the review cycle for the last set of freeze path changes. SGI-PV: 959267 SGI-Modid: xfs-linux-melb:xfs-kern:28035a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Remove unused argument to xfs_bmap_finishEric Sandeen2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The firstblock argument to xfs_bmap_finish is not used by that function. Remove it and cleanup the code a bit. Patch provided by Eric Sandeen. SGI-PV: 960196 SGI-Modid: xfs-linux-melb:xfs-kern:28034a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Clean up use of VFS attr flagsEric Sandeen2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the the generic VFS attr flags where appropriate instead of open coding them to the same values. Patch provided by Eric Sandeen. SGI-PV: 960868 SGI-Modid: xfs-linux-melb:xfs-kern:28033a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Remove useless memory barrierRalf Baechle2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | wake_up's implementation does an implicit memory barrier so the explicit memory barrier is not needed in vfs_sync_worker. Patch provided by Ralf Baechle. SGI-PV: 960867 SGI-Modid: xfs-linux-melb:xfs-kern:28032a Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] XFS sysctl cleanupsEric W. Biederman2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | Removes unneeded sysctl insert at head behaviour. Cleans up sysctl definitions to use C99 initialisers. Patch provided by Eric W. Biederman. SGI-PV: 960192 SGI-Modid: xfs-linux-melb:xfs-kern:28031a Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix assertion in xfs_attr_shortform_remove().Lachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 960791 SGI-Modid: xfs-linux-melb:xfs-kern:28021a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix callers of xfs_iozero() to zero the correct range.Lachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem is the two callers of xfs_iozero() are rounding out the range to be zeroed to the end of a fsb and in some cases this extends past the new eof. The call to commit_write() in xfs_iozero() will cause the Linux inode's file size to be set too high. SGI-PV: 960788 SGI-Modid: xfs-linux-melb:xfs-kern:28013a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Ensure a frozen filesystem has a clean log before writing the dummyDavid Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | record. The current Linux XFS freeze code is a mess. We flush the metadata buffers out while we are still allowing new transactions to start and then fail to flush the dirty buffers back out before writing the unmount and dummy records to the log. This leads to problems when the frozen filesystem is used for snapshots - we do log recovery on a readonly image and often it appears that the log image in the snapshot is not correct. Hence we end up with hangs, oops and mount failures when trying to mount a snapshot image that has been created when the filesystem has not been correctly frozen. To fix this, we need to move th metadata flush to after we wait for all current transactions to complete in teh second stage of the freeze. This means that when we write the final log records, the log should be clean and recovery should never occur on a snapshot image created from a frozen filesystem. SGI-PV: 959267 SGI-Modid: xfs-linux-melb:xfs-kern:28010a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix sub-block zeroing for buffered writes into unwritten extents.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When writing less than a filesystem block of data into an unwritten extent via buffered I/O, __xfs_get_blocks fails to set the buffer new flag. As a result, the generic code will not zero either edge of the block resulting in garbage being written to disk either side of the real data. Set the buffer new state on bufferd writes to unwritten extents to ensure that zeroing occurs. SGI-PV: 960328 SGI-Modid: xfs-linux-melb:xfs-kern:28000a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Re-initialize the per-cpu superblock counters after recovery.Lachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | After filesystem recovery the superblock is re-read to bring in any changes. If the per-cpu superblock counters are not re-initialized from the superblock then the next time the per-cpu counters are disabled they might overwrite the global counter with a bogus value. SGI-PV: 957348 SGI-Modid: xfs-linux-melb:xfs-kern:27999a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix block reservation changes for non-SMP systems.Kevin Jamieson2007-02-10
| | | | | | | | | | | | | | | | | | | | SGI-PV: 956323 SGI-Modid: xfs-linux-melb:xfs-kern:27940a Signed-off-by: Kevin Jamieson <kjamieson@bycast.com> Signed-off-by: David Chatterton <chatz@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix block reservation mechanism.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The block reservation mechanism has been broken since the per-cpu superblock counters were introduced. Make the block reservation code work with the per-cpu counters by syncing the counters, snapshotting the amount of available space and then doing a modifcation of the counter state according to the result. Continue in a loop until we either have no space available or we reserve some space. SGI-PV: 956323 SGI-Modid: xfs-linux-melb:xfs-kern:27895a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Make growfs work for amounts greater than 2TBDavid Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The free block modification code has a 32bit interface, limiting the size the filesystem can be grown even on 64 bit machines. On 32 bit machines, there are other 32bit variables in transaction structures and interfaces that need to be expanded to allow this to work. SGI-PV: 959978 SGI-Modid: xfs-linux-melb:xfs-kern:27894a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix inode log item use-after-free on forced shutdownDavid Chinner2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 959388 SGI-Modid: xfs-linux-melb:xfs-kern:27805a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix attr2 corruption with btree data extentsBarry Naujok2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 958747 SGI-Modid: xfs-linux-melb:xfs-kern:27792a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Russell Cattelan <cattelan@thebarn.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Workaround log space issue by increasing XFS_TRANS_PUSH_AIL_RESTARTSVlad Apostolov2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 959264 SGI-Modid: xfs-linux-melb:xfs-kern:27750a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] remove unused filp from ioctl functionsLachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 959140 SGI-Modid: xfs-linux-melb:xfs-kern:27712a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] mraccessf & mrupdatef are supposed to be the "flags" versions of theLachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | functions, but they a) ignore the flags parameter completely, and b) are never called directly, only via the flag-less defines anyway So, drop the #define indirection, and rename mraccessf to mraccess, etc. SGI-PV: 959138 SGI-Modid: xfs-linux-melb:xfs-kern:27711a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] remove unused xflags parameter from sync routinesLachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 959137 SGI-Modid: xfs-linux-melb:xfs-kern:27710a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] fix sparse warning in xfs_da_btree.cLachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 954580 SGI-Modid: xfs-linux-melb:xfs-kern:27702a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] use struct kvec in struct uioLachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 954580 SGI-Modid: xfs-linux-melb:xfs-kern:27701a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix UP build breakage due to undefined m_icsb_mutex.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | SGI-PV: 952227 SGI-Modid: xfs-linux-melb:xfs-kern:27692a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Reduction global superblock lock contention near ENOSPC.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing per-cpu superblock counter code uses the global superblock spin lock when we approach ENOSPC for global synchronisation. On larger machines than this code was originally tested on this can still get catastrophic spinlock contention due increasing rebalance frequency near ENOSPC. By introducing a sleeping lock that is used to serialise balances and modifications near ENOSPC we prevent contention from needlessly from wasting the CPU time of potentially hundreds of CPUs. To reduce the number of balances occuring, we separate the need rebalance case from the slow allocate case. Now, a counter running dry will trigger a rebalance during which counters are disabled. Any thread that sees a disabled counter enters a different path where it waits on the new mutex. When it gets the new mutex, it checks if the counter is disabled. If the counter is disabled, then we _know_ that we have to use the global counter and lock and it is safe to do so immediately. Otherwise, we drop the mutex and go back to trying the per-cpu counters which we know were re-enabled. SGI-PV: 952227 SGI-Modid: xfs-linux-melb:xfs-kern:27612a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Get rid of old 5.3/6.1 v1 log items. Cleanup patch sent in by EricEric Sandeen2007-02-10
| | | | | | | | | | | | | | | | | | | | Sandeen. SGI-PV: 958736 SGI-Modid: xfs-linux-melb:xfs-kern:27596a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Keep stack usage down for 4k stacks by using noinline.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc-4.1 and more recent aggressively inline static functions which increases XFS stack usage by ~15% in critical paths. Prevent this from occurring by adding noinline to the STATIC definition. Also uninline some functions that are too large to be inlined and were causing problems with CONFIG_FORCED_INLINING=y. Finally, clean up all the different users of inline, __inline and __inline__ and put them under one STATIC_INLINE macro. For debug kernels the STATIC_INLINE macro uninlines those functions. SGI-PV: 957159 SGI-Modid: xfs-linux-melb:xfs-kern:27585a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Current usage of buftarg flags is incorrect.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The {test,set,clear}_bit() operations take a bit index for the bit to operate on. The XBT_* flags are defined as bit fields which is incorrect, not to mention the way the bit fields are enumerated is broken too. This was only working by chance. Fix the definitions of the flags and make the code using them use the {test,set,clear}_bit() operations correctly. SGI-PV: 958639 SGI-Modid: xfs-linux-melb:xfs-kern:27565a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Prevent buffer overrun in cmn_err().Lachlan McIlroy2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The message buffer used by cmn_err() is only 256 bytes and some CXFS messages were exceeding this length. Since we were using vsprintf() and not checking for buffer overruns we were clobbering memory beyond the buffer. The size of the buffer has been increased to 1024 bytes so we can capture these larger messages and we are now using vsnprintf() to prevent overrunning the buffer size. SGI-PV: 958599 SGI-Modid: xfs-linux-melb:xfs-kern:27561a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Geoffrey Wehrman <gwehrman@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Fix a synchronous buftarg flush deadlock when freezing.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the last stage of a freeze, we flush the buftarg synchronously over and over again until it succeeds twice without skipping any buffers. The delwri list flush skips pinned buffers, but tries to flush all others. It removes the buffers from the delwri list, then tries to lock them one at a time as it traverses the list to issue the I/O. It holds them locked until we issue all of the I/O and then unlocks them once we've waited for it to complete. The problem is that during a freeze, the filesystem may still be doing stuff - like flushing delalloc data buffers - in the background and hence we can be trying to lock buffers that were on the delwri list at the same time. Hence we can get ABBA deadlocks between threads doing allocation and the buftarg flush (freeze) thread. Fix it by skipping locked (and pinned) buffers as we traverse the delwri buffer list. SGI-PV: 957195 SGI-Modid: xfs-linux-melb:xfs-kern:27535a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
| * [XFS] Make quiet mounts quietDavid Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | The XFS quiet mount logic was inverted making quiet mounts noisy and vice versa. Fix it. SGI-PV: 958469 SGI-Modid: xfs-linux-melb:xfs-kern:27520a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Tim Shimmin <tes@sgi.com>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2007-02-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Update defconfig. [SPARC64]: Add PCI MSI support on Niagara. [SPARC64] IRQ: Use irq_desc->chip_data instead of irq_desc->handler_data [SPARC64]: Add obppath sysfs attribute for SBUS and PCI devices. [PARTITION]: Add whole_disk attribute.
| * | [PARTITION]: Add whole_disk attribute.Fabio Massimo Di Nitto2007-02-11
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some partitioning systems create special partitions that span the entire disk. One example are Sun partitions, and this whole-disk partition exists to tell the firmware the extent of the entire device so it can load the boot block and do other things. Such partitions should not be treated as normal partitions, because all the other partitions overlap this whole-disk one. So we'd see multiple instances of the same UUID etc. which we do not want. udev and friends can thus search for this 'whole_disk' attribute and use it to decide to ignore the partition. Signed-off-by: Fabio Massimo Di Nitto <fabbione@ubuntu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] ifdef ->rchar, ->wchar, ->syscr, ->syscw from task_structAlexey Dobriyan2007-02-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | They are fat: 4x8 bytes in task_struct. They are uncoditionally updated in every fork, read, write and sendfile. They are used only if you have some "extended acct fields feature". And please, please, please, read(2) knows about bytes, not characters, why it is called "rchar"? Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jay Lan <jlan@engr.sgi.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] jbd layer function called instead of fs specific oneDmitriy Monakhov2007-02-11
| | | | | | | | | | | | | | | | jbd function called instead of fs specific one. Signed-off-by: Dmitriy Monakhov <dmonakhov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] Remove unused kernel config option ZISOFS_FSRobert P. J. Day2007-02-11
| | | | | | | | | | | | | | | | | | Remove the kernel config option ZISOFS_FS, since it appears that the actual option is simply ZISOFS. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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