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2011-12-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: fix meta data raid-repair merge problem Btrfs: skip allocation attempt from empty cluster Btrfs: skip block groups without enough space for a cluster Btrfs: start search for new cluster at the beginning Btrfs: reset cluster's max_size when creating bitmap Btrfs: initialize new bitmaps' list Btrfs: fix oops when calling statfs on readonly device Btrfs: Don't error on resizing FS to same size Btrfs: fix deadlock on metadata reservation when evicting a inode Fix URL of btrfs-progs git repository in docs btrfs scrub: handle -ENOMEM from init_ipath()
2011-11-30Fix URL of btrfs-progs git repository in docsArnd Hannemann
The location of the btrfs-progs repository has been changed. This patch updates the documentation accordingly. Signed-off-by: Arnd Hannemann <arnd@arndnet.de>
2011-11-04Documentation: HFS is orphanedMarcos Paulo de Souza
Removed the reference of Roman Zippel, last maintainer, of orphaned HFS filesystem. Signed-off-by: Marcos Paulo de Souza <marcos.mage@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-04Documentation: fix inotify source file pathsMarcos Paulo de Souza
Fixes the path to find the source files of the inotify subsystem. Signed-off-by: Marcos Paulo de Souza <marcos.mage@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-02Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue: vfs: add d_prune dentry operation vfs: protect i_nlink filesystems: add set_nlink() filesystems: add missing nlink wrappers logfs: remove unnecessary nlink setting ocfs2: remove unnecessary nlink setting jfs: remove unnecessary nlink setting hypfs: remove unnecessary nlink setting vfs: ignore error on forced remount readlinkat: ensure we return ENOENT for the empty pathname for normal lookups vfs: fix dentry leak in simple_fill_super()
2011-11-02Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (97 commits) jbd2: Unify log messages in jbd2 code jbd/jbd2: validate sb->s_first in journal_get_superblock() ext4: let ext4_ext_rm_leaf work with EXT_DEBUG defined ext4: fix a syntax error in ext4_ext_insert_extent when debugging enabled ext4: fix a typo in struct ext4_allocation_context ext4: Don't normalize an falloc request if it can fit in 1 extent. ext4: remove comments about extent mount option in ext4_new_inode() ext4: let ext4_discard_partial_buffers handle unaligned range correctly ext4: return ENOMEM if find_or_create_pages fails ext4: move vars to local scope in ext4_discard_partial_page_buffers_no_lock() ext4: Create helper function for EXT4_IO_END_UNWRITTEN and i_aiodio_unwritten ext4: optimize locking for end_io extent conversion ext4: remove unnecessary call to waitqueue_active() ext4: Use correct locking for ext4_end_io_nolock() ext4: fix race in xattr block allocation path ext4: trace punch_hole correctly in ext4_ext_map_blocks ext4: clean up AGGRESSIVE_TEST code ext4: move variables to their scope ext4: fix quota accounting during migration ext4: migrate cleanup ...
2011-11-02Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: udf: Cleanup metadata flags handling udf: Skip mirror metadata FE loading when metadata FE is ok ext3: Allow quota file use root reservation udf: Remove web reference from UDF MAINTAINERS entry quota: Drop path reference on error exit from quotactl udf: Neaten udf_debug uses udf: Neaten logging output, use vsprintf extension %pV udf: Convert printks to pr_<level> udf: Rename udf_warning to udf_warn udf: Rename udf_error to udf_err udf: Promote some debugging messages to udf_error ext3: Remove the obsolete broken EXT3_IOC32_WAIT_FOR_READONLY. udf: Add readpages support for udf. ext3/balloc.c: local functions should be static ext2: fix the outdated comment in ext2_nfs_get_inode() ext3: remove deprecated oldalloc fs/ext3/balloc.c: delete useless initialization fs/ext2/balloc.c: delete useless initialization ext3: fix message in ext3_remount for rw-remount case ext3: Remove i_mutex from ext3_sync_file() Fix up trivial (printf format cleanup) conflicts in fs/udf/udfdecl.h
2011-11-02vfs: add d_prune dentry operationSage Weil
This adds a d_prune dentry operation that is called by the VFS prior to pruning (i.e. unhashing and killing) a hashed dentry from the dcache. Wrap dentry_lru_del() and use the new _prune() helper in the cases where we are about to unhash and kill the dentry. This will be used by Ceph to maintain a flag indicating whether the complete contents of a directory are contained in the dcache, allowing it to satisfy lookups and readdir without addition server communication. Renumber a few DCACHE_* #defines to group DCACHE_OP_PRUNE with the other DCACHE_OP_ bits. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-10-26Merge branch 'for-linus' of git://github.com/ericvh/linuxLinus Torvalds
* 'for-linus' of git://github.com/ericvh/linux: 9p: fix 9p.txt to advertise msize instead of maxdata net/9p: Convert net/9p protocol dumps to tracepoints fs/9p: change an int to unsigned int fs/9p: Cleanup option parsing in 9p 9p: move dereference after NULL check fs/9p: inode file operation is properly initialized init_special_inode fs/9p: Update zero-copy implementation in 9p
2011-10-25Merge branch 'driver-core-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core * 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (38 commits) mm: memory hotplug: Check if pages are correctly reserved on a per-section basis Revert "memory hotplug: Correct page reservation checking" Update email address for stable patch submission dynamic_debug: fix undefined reference to `__netdev_printk' dynamic_debug: use a single printk() to emit messages dynamic_debug: remove num_enabled accounting dynamic_debug: consolidate repetitive struct _ddebug descriptor definitions uio: Support physical addresses >32 bits on 32-bit systems sysfs: add unsigned long cast to prevent compile warning drivers: base: print rejected matches with DEBUG_DRIVER memory hotplug: Correct page reservation checking memory hotplug: Refuse to add unaligned memory regions remove the messy code file Documentation/zh_CN/SubmitChecklist ARM: mxc: convert device creation to use platform_device_register_full new helper to create platform devices with dma mask docs/driver-model: Update device class docs docs/driver-model: Document device.groups kobj_uevent: Ignore if some listeners cannot handle message dynamic_debug: make netif_dbg() call __netdev_printk() dynamic_debug: make netdev_dbg() call __netdev_printk() ...
2011-10-249p: fix 9p.txt to advertise msize instead of maxdataNicolae Mogoreanu
9p.txt advertises that maxdata mount option should be used to specify msize, in the code though we use msize option and completely ignore maxdata if passed Signed-off-by: Nicolae Mogoreanu <mogoreanu@gmail.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-10-08ext4: remove deprecated oldallocLukas Czerner
For a long time now orlov is the default block allocator in the ext4. It performs better than the old one and no one seems to claim otherwise so we can safely drop it and make oldalloc and orlov mount option deprecated. This is a part of the effort to reduce number of ext4 options hence the test matrix. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-10-08ext4: documentation: remove acl and user_xattr mount optionsTheodore Ts'o
Acl and user_xattr mount options are no longer needed since those features are enabled by default if configured in (seee commit ea6633369458992241599c9d9ebadffaeddec164). We can not easily deprecate mount options itself (since it is probably too early), but we can remove it from documentation first. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-09-27doc: fix broken referencesPaul Bolle
There are numerous broken references to Documentation files (in other Documentation files, in comments, etc.). These broken references are caused by typo's in the references, and by renames or removals of the Documentation files. Some broken references are simply odd. Fix these broken references, sometimes by dropping the irrelevant text they were part of. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-09-03ext4: improve handling of conflicting mount optionsTheodore Ts'o
If the user explicitly specifies conflicting mount options for delalloc or dioread_nolock and data=journal, fail the mount, instead of printing a warning and continuing (since many user's won't look at dmesg and notice the warning). Also, print a single warning that data=journal implies that delayed allocation is not on by default (since it's not supported), and furthermore that O_DIRECT is not supported. Improve the text in Documentation/filesystems/ext4.txt so this is clear there as well. Similarly, if the dioread_nolock mount option is specified when the file system block size != PAGE_SIZE, fail the mount instead of printing a warning message and ignoring the mount option. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-08-23docs/sysfs: Specify ABI documentation requirementsBart Van Assche
Although it is expected nowadays that every new sysfs attribute is documented under Documentation/ABI, this is not yet mentioned in the kernel documentation. This patch adds a note in the sysfs documentation about that requirement. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-17ext3: remove deprecated oldallocLukas Czerner
For a long time now orlov is the default block allocator in the ext3. It performs better than the old one and no one seems to claim otherwise so we can safely drop it and make oldalloc and orlov mount option deprecated. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz>
2011-08-14Documentation: befs.txt: no maintainer, orphanedMarcos Souza
Remove the name of Sergey Kostyliov as maintainer of befs. In the MAINTAINERS file, befs is orphaned. Signed-off-by: Marcos Souza <marcos.mage@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-27Merge branch 'for-linus' of ↵Linus Torvalds
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: merge fchmod() and fchmodat() guts, kill ancient broken kludge xfs: fix misspelled S_IS...() xfs: get rid of open-coded S_ISREG(), etc. vfs: document locking requirements for d_move, __d_move and d_materialise_unique omfs: fix (mode & S_IFDIR) abuse btrfs: S_ISREG(mode) is not mode & S_IFREG... ima: fmode_t misspelled as mode_t... pci-label.c: size_t misspelled as mode_t jffs2: S_ISLNK(mode & S_IFMT) is pointless snd_msnd ->mode is fmode_t, not mode_t v9fs_iop_get_acl: get rid of unused variable vfs: dont chain pipe/anon/socket on superblock s_inodes list Documentation: Exporting: update description of d_splice_alias fs: add missing unlock in default_llseek()
2011-07-26Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: jbd: change the field "b_cow_tid" of struct journal_head from type unsigned to tid_t ext3.txt: update the links in the section "useful links" to the latest ones ext3: Fix data corruption in inodes with journalled data ext2: check xattr name_len before acquiring xattr_sem in ext2_xattr_get ext3: Fix compilation with -DDX_DEBUG quota: Remove unused declaration jbd: Use WRITE_SYNC in journal checkpoint. jbd: Fix oops in journal_remove_journal_head() ext3: Return -EINVAL when start is beyond the end of fs in ext3_trim_fs() ext3/ioctl.c: silence sparse warnings about different address spaces ext3/ext4 Documentation: remove bh/nobh since it has been deprecated ext3: Improve truncate error handling ext3: use proper little-endian bitops ext2: include fs.h into ext2_fs.h ext3: Fix oops in ext3_try_to_allocate_with_rsv() jbd: fix a bug of leaking jh->b_jcount jbd: remove dependency on __GFP_NOFAIL ext3: Convert ext3 to new truncate calling convention jbd: Add fixed tracepoints ext3: Add fixed tracepoints Resolve conflicts in fs/ext3/fsync.c due to fsync locking push-down and new fixed tracepoints.
2011-07-26Documentation: Exporting: update description of d_splice_aliasPhillip Lougher
Following commits a904937 and 0c1aa9a update the d_splice_alias desciption. Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-26Merge branch 'driver-core-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 * 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: updated Documentation/ja_JP/SubmittingPatches debugfs: add documentation for debugfs_create_x64 uio: uio_pdrv_genirq: Add OF support firmware: gsmi: remove sysfs entries when unload the module Documentation/zh_CN: Fix messy code file email-clients.txt driver core: add more help description for "path to uevent helper" driver-core: modify FIRMWARE_IN_KERNEL help message driver-core: Kconfig grammar corrections in firmware configuration DOCUMENTATION: Replace create_device() with device_create(). DOCUMENTATION: Update overview.txt in Doc/driver-model. pti: pti_tty_install documentation mispelling.
2011-07-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: Make ZLIB compression support optional Squashfs: Update documentation for XZ and add squashfs-tools devel tree
2011-07-26Merge branch 'for-3.1' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
* 'for-3.1' of git://linux-nfs.org/~bfields/linux: nfsd: don't break lease on CLAIM_DELEGATE_CUR locks: rename lock-manager ops nfsd4: update nfsv4.1 implementation notes nfsd: turn on reply cache for NFSv4 nfsd4: call nfsd4_release_compoundargs from pc_release nfsd41: Deny new lock before RECLAIM_COMPLETE done fs: locks: remove init_once nfsd41: check the size of request nfsd41: error out when client sets maxreq_sz or maxresp_sz too small nfsd4: fix file leak on open_downgrade nfsd4: remember to put RW access on stateid destruction NFSD: Added TEST_STATEID operation NFSD: added FREE_STATEID operation svcrpc: fix list-corrupting race on nfsd shutdown rpc: allow autoloading of gss mechanisms svcauth_unix.c: quiet sparse noise svcsock.c: include sunrpc.h to quiet sparse noise nfsd: Remove deprecated nfsctl system call and related code. NFSD: allow OP_DESTROY_CLIENTID to be only op in COMPOUND Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
2011-07-25Merge branch 'for-linus' of ↵Linus Torvalds
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)
2011-07-25fs: take the ACL checks to common codeChristoph Hellwig
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>
2011-07-25ext3.txt: update the links in the section "useful links" to the latest onesWang Sheng-Hui
In Documentation/filesystems/ext3.txt, the section "useful links" provides two links which link to ibm developerworks articles. While the second one can be redirected to the latest one, the first one http://www.ibm.com/developerworks/library/l-fs7.html fails to be redirected. Update the 2 links to the latest ones. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
2011-07-23Merge branch 'for-linus' of ↵Linus Torvalds
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.
2011-07-22Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: (32 commits) MAINTAINERS: change e-mail of Adrian Hunter UBIFS: fix master node recovery UBIFS: improve power cut emulation testing UBIFS: rename recovery testing variables UBIFS: remove custom list of superblocks UBIFS: stop re-defining UBI operations UBIFS: switch to I/O helpers UBIFS: switch to ubifs_leb_write UBIFS: switch to ubifs_leb_read UBIFS: introduce more I/O helpers UBIFS: always print stacktrace when switching to R/O mode UBIFS: remove unused and unneeded debugging function UBIFS: add global debugfs knobs UBIFS: introduce debugfs helpers UBIFS: re-arrange debugging code a bit UBIFS: be more informative in failure mode UBIFS: switch self-check knobs to debugfs UBIFS: lessen amount of debugging check types UBIFS: introduce helper functions for debugging checks and tests UBIFS: amend debugging inode size check function prototype ...
2011-07-22Squashfs: Update documentation for XZ and add squashfs-tools devel treePhillip Lougher
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
2011-07-21fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik
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>
2011-07-21fs: add SEEK_HOLE and SEEK_DATA flagsJosef Bacik
This just gets us ready to support the SEEK_HOLE and SEEK_DATA flags. Turns out using fiemap in things like cp cause more problems than it solves, so lets try and give userspace an interface that doesn't suck. We need to match solaris here, and the definitions are *o* If /whence/ is SEEK_HOLE, the offset of the start of the next hole greater than or equal to the supplied offset is returned. The definition of a hole is provided near the end of the DESCRIPTION. *o* If /whence/ is SEEK_DATA, the file pointer is set to the start of the next non-hole file region greater than or equal to the supplied offset. So in the generic case the entire file is data and there is a virtual hole at the end. That means we will just return i_size for SEEK_HOLE and will return the same offset for SEEK_DATA. This is how Solaris does it so we have to do it the same way. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-21vfs: increase shrinker batch sizeDave Chinner
Now that the per-sb shrinker is responsible for shrinking 2 or more caches, increase the batch size to keep econmies of scale for shrinking each cache. Increase the shrinker batch size to 1024 objects. To allow for a large increase in batch size, add a conditional reschedule to prune_icache_sb() so that we don't hold the LRU spin lock for too long. This mirrors the behaviour of the __shrink_dcache_sb(), and allows us to increase the batch size without needing to worry about problems caused by long lock hold times. To ensure that filesystems using the per-sb shrinker callouts don't cause problems, document that the object freeing method must reschedule appropriately inside loops. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-21superblock: add filesystem shrinker operationsDave Chinner
Now we have a per-superblock shrinker implementation, we can add a filesystem specific callout to it to allow filesystem internal caches to be shrunk by the superblock shrinker. Rather than perpetuate the multipurpose shrinker callback API (i.e. nr_to_scan == 0 meaning "tell me how many objects freeable in the cache), two operations will be added. The first will return the number of objects that are freeable, the second is the actual shrinker call. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-21locks: rename lock-manager opsJ. Bruce Fields
Both the filesystem and the lock manager can associate operations with a lock. Confusingly, one of them (fl_release_private) actually has the same name in both operation structures. It would save some confusion to give the lock-manager ops different names. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-07-20->permission() sanitizing: document API changesAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20->permission() sanitizing: don't pass flags to ->permission()Al Viro
not used by the instances anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20->permission() sanitizing: don't pass flags to ->check_acl()Al Viro
not used in the instances anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-18nfsd4: update nfsv4.1 implementation notesJ. Bruce Fields
Update documentation to reflect recent progress. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-07-18debugfs: add documentation for debugfs_create_x64Akinobu Mita
debugfs_create_x64() exists. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-13nilfs2: remove resize from unsupported features listRyusuke Konishi
Resize feature was supported by the commit 4e33f9eab07e but it was not reflected to the list of unsupported features in nilfs2.txt file. This updates the list to fix discrepancy. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2011-07-11Merge branch 'master' into for-nextJiri Kosina
Sync with Linus' tree to be able to apply pending patches that are based on newer code already present upstream.
2011-07-07FS-Cache: Add a helper to bulk uncache pages on an inodeDavid Howells
Add an FS-Cache helper to bulk uncache pages on an inode. This will only work for the circumstance where the pages in the cache correspond 1:1 with the pages attached to an inode's page cache. This is required for CIFS and NFS: When disabling inode cookie, we were returning the cookie and setting cifsi->fscache to NULL but failed to invalidate any previously mapped pages. This resulted in "Bad page state" errors and manifested in other kind of errors when running fsstress. Fix it by uncaching mapped pages when we disable the inode cookie. This patch should fix the following oops and "Bad page state" errors seen during fsstress testing. ------------[ cut here ]------------ kernel BUG at fs/cachefiles/namei.c:201! invalid opcode: 0000 [#1] SMP Pid: 5, comm: kworker/u:0 Not tainted 2.6.38.7-30.fc15.x86_64 #1 Bochs Bochs RIP: 0010: cachefiles_walk_to_object+0x436/0x745 [cachefiles] RSP: 0018:ffff88002ce6dd00 EFLAGS: 00010282 RAX: ffff88002ef165f0 RBX: ffff88001811f500 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000282 RBP: ffff88002ce6dda0 R08: 0000000000000100 R09: ffffffff81b3a300 R10: 0000ffff00066c0a R11: 0000000000000003 R12: ffff88002ae54840 R13: ffff88002ae54840 R14: ffff880029c29c00 R15: ffff88001811f4b0 FS: 00007f394dd32720(0000) GS:ffff88002ef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007fffcb62ddf8 CR3: 000000001825f000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/u:0 (pid: 5, threadinfo ffff88002ce6c000, task ffff88002ce55cc0) Stack: 0000000000000246 ffff88002ce55cc0 ffff88002ce6dd58 ffff88001815dc00 ffff8800185246c0 ffff88001811f618 ffff880029c29d18 ffff88001811f380 ffff88002ce6dd50 ffffffff814757e4 ffff88002ce6dda0 ffffffff8106ac56 Call Trace: cachefiles_lookup_object+0x78/0xd4 [cachefiles] fscache_lookup_object+0x131/0x16d [fscache] fscache_object_work_func+0x1bc/0x669 [fscache] process_one_work+0x186/0x298 worker_thread+0xda/0x15d kthread+0x84/0x8c kernel_thread_helper+0x4/0x10 RIP cachefiles_walk_to_object+0x436/0x745 [cachefiles] ---[ end trace 1d481c9af1804caa ]--- I tested the uncaching by the following means: (1) Create a big file on my NFS server (104857600 bytes). (2) Read the file into the cache with md5sum on the NFS client. Look in /proc/fs/fscache/stats: Pages : mrk=25601 unc=0 (3) Open the file for read/write ("bash 5<>/warthog/bigfile"). Look in proc again: Pages : mrk=25601 unc=25601 Reported-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-Tested-by: Suresh Jayaraman <sjayaraman@suse.de> cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-04UBIFS: switch self-check knobs to debugfsArtem Bityutskiy
UBIFS has many built-in self-check functions which can be enabled using the debug_chks module parameter or the corresponding sysfs file (/sys/module/ubifs/parameters/debug_chks). However, this is not flexible enough because it is not per-filesystem. This patch moves this to debugfs interfaces. We already have debugfs support, so this patch just adds more debugfs files. While looking at debugfs support I've noticed that it is racy WRT file-system unmount, and added a TODO entry for that. This problem has been there for long time and it is quite standard debugfs PITA. The plan is to fix this later. This patch is simple, but it is large because it changes many places where we check if a particular type of checks is enabled or disabled. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-07-04UBIFS: lessen amount of debugging check typesArtem Bityutskiy
We have too many different debugging checks - lessen the amount by merging all index-related checks into one. At the same time, move the "force in-the-gap" test to the "index checks" class, because it is too heavy for the "general" class. This patch merges TNC, Old index, and Index size check and calles this just "index checks". Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-06-25ext3/ext4 Documentation: remove bh/nobh since it has been deprecatedLukas Czerner
Bh and nobh mount option has been deprecated in ext4 (206f7ab4f49a2021fcb8687f25395be77711ddee) and in ext3 (4c4d3901225518ed1a4c938ba15ba09842a00770) so remove those options from documentation. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz>
2011-06-14rcu: Use softirq to address performance regressionShaohua Li
Commit a26ac2455ffcf3(rcu: move TREE_RCU from softirq to kthread) introduced performance regression. In an AIM7 test, this commit degraded performance by about 40%. The commit runs rcu callbacks in a kthread instead of softirq. We observed high rate of context switch which is caused by this. Out test system has 64 CPUs and HZ is 1000, so we saw more than 64k context switch per second which is caused by RCU's per-CPU kthread. A trace showed that most of the time the RCU per-CPU kthread doesn't actually handle any callbacks, but instead just does a very small amount of work handling grace periods. This means that RCU's per-CPU kthreads are making the scheduler do quite a bit of work in order to allow a very small amount of RCU-related processing to be done. Alex Shi's analysis determined that this slowdown is due to lock contention within the scheduler. Unfortunately, as Peter Zijlstra points out, the scheduler's real-time semantics require global action, which means that this contention is inherent in real-time scheduling. (Yes, perhaps someone will come up with a workaround -- otherwise, -rt is not going to do well on large SMP systems -- but this patch will work around this issue in the meantime. And "the meantime" might well be forever.) This patch therefore re-introduces softirq processing to RCU, but only for core RCU work. RCU callbacks are still executed in kthread context, so that only a small amount of RCU work runs in softirq context in the common case. This should minimize ksoftirqd execution, allowing us to skip boosting of ksoftirqd for CONFIG_RCU_BOOST=y kernels. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Tested-by: "Alex,Shi" <alex.shi@intel.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2011-06-13doc: fix wrong arch/i386 referencesWanlong Gao
Change all "arch/i386" to "arch/x86" in Documentaion/, since the directory has changed. Also update the files which have changed their filename in the meantime accordingly. Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com> [jkosina@suse.cz: reword changelog] Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-28Merge branch 'for-linus' of ↵Linus Torvalds
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: (36 commits) Cache xattr security drop check for write v2 fs: block_page_mkwrite should wait for writeback to finish mm: Wait for writeback when grabbing pages to begin a write configfs: remove unnecessary dentry_unhash on rmdir, dir rename fat: remove unnecessary dentry_unhash on rmdir, dir rename hpfs: remove unnecessary dentry_unhash on rmdir, dir rename minix: remove unnecessary dentry_unhash on rmdir, dir rename fuse: remove unnecessary dentry_unhash on rmdir, dir rename coda: remove unnecessary dentry_unhash on rmdir, dir rename afs: remove unnecessary dentry_unhash on rmdir, dir rename affs: remove unnecessary dentry_unhash on rmdir, dir rename 9p: remove unnecessary dentry_unhash on rmdir, dir rename ncpfs: fix rename over directory with dangling references ncpfs: document dentry_unhash usage ecryptfs: remove unnecessary dentry_unhash on rmdir, dir rename hostfs: remove unnecessary dentry_unhash on rmdir, dir rename hfsplus: remove unnecessary dentry_unhash on rmdir, dir rename hfs: remove unnecessary dentry_unhash on rmdir, dir rename omfs: remove unnecessary dentry_unhash on rmdir, dir rneame udf: remove unnecessary dentry_unhash from rmdir, dir rename ...
2011-05-27Merge branch 'docs-move' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs * 'docs-move' of git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs: Create Documentation/security/, move LSM-, credentials-, and keys-related files from Documentation/ to Documentation/security/, add Documentation/security/00-INDEX, and update all occurrences of Documentation/<moved_file> to Documentation/security/<moved_file>.