1. 15 Sep, 2009 16 commits
  2. 14 Sep, 2009 24 commits
    • Linus Torvalds's avatar
      Merge branch 'osync_cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 · 4142e0d1
      Linus Torvalds authored
      * 'osync_cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
        fsync: wait for data writeout completion before calling ->fsync
        vfs: Remove generic_osync_inode() and sync_page_range{_nolock}()
        fat: Opencode sync_page_range_nolock()
        pohmelfs: Use new syncing helper
        xfs: Convert sync_page_range() to simple filemap_write_and_wait_range()
        ocfs2: Update syncing after splicing to match generic version
        ntfs: Use new syncing helpers and update comments
        ext4: Remove syncing logic from ext4_file_write
        ext3: Remove syncing logic from ext3_file_write
        ext2: Update comment about generic_osync_inode
        vfs: Introduce new helpers for syncing after writing to O_SYNC file or IS_SYNC inode
        vfs: Rename generic_file_aio_write_nolock
        ocfs2: Use __generic_file_aio_write instead of generic_file_aio_write_nolock
        pohmelfs: Use __generic_file_aio_write instead of generic_file_aio_write_nolock
        vfs: Remove syncing from generic_file_direct_write() and generic_file_buffered_write()
        vfs: Export __generic_file_aio_write() and add some comments
        vfs: Introduce filemap_fdatawait_range
      4142e0d1
    • Linus Torvalds's avatar
      Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw · 33f1de69
      Linus Torvalds authored
      * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw:
        GFS2: Whitespace fixes
        GFS2: Remove unused sysfs file
        GFS2: Be extra careful about deallocating inodes
        GFS2: Remove no_formal_ino generating code
        GFS2: Rename eattr.[ch] as xattr.[ch]
        GFS2: Clean up of extended attribute support
        GFS2: Add explanation of extended attr on-disk format
        GFS2: Add "-o errors=panic|withdraw" mount options
        GFS2: jumping to wrong label?
        GFS2: free disk inode which is deleted by remote node -V2
        GFS2: Add a document explaining GFS2's uevents
        GFS2: Add sysfs link to device
        GFS2: Replace assertion with proper error handling
        GFS2: Improve error handling in inode allocation
        GFS2: Add some more info to uevents
        GFS2: Add online uevent to GFS2
      33f1de69
    • Linus Torvalds's avatar
      Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 · 041d6d0b
      Linus Torvalds authored
      * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
        udf: Fix possible corruption when close races with write
        udf: Perform preallocation only for regular files
        udf: Remove wrong assignment in udf_symlink
        udf: Remove dead code
      041d6d0b
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 · af8cb8aa
      Linus Torvalds authored
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (21 commits)
        fs/Kconfig: move nilfs2 outside misc filesystems
        nilfs2: convert nilfs_bmap_lookup to an inline function
        nilfs2: allow btree code to directly call dat operations
        nilfs2: add update functions of virtual block address to dat
        nilfs2: remove individual gfp constants for each metadata file
        nilfs2: stop zero-fill of btree path just before free it
        nilfs2: remove unused btree argument from btree functions
        nilfs2: remove nilfs_dat_abort_start and nilfs_dat_abort_free
        nilfs2: shorten freeze period due to GC in write operation v3
        nilfs2: add more check routines in mount process
        nilfs2: An unassigned variable is assigned to a never used structure member
        nilfs2: use GFP_NOIO for bio_alloc instead of GFP_NOWAIT
        nilfs2: stop using periodic write_super callback
        nilfs2: clean up nilfs_write_super
        nilfs2: fix disorder of nilfs_write_super in nilfs_sync_fs
        nilfs2: remove redundant super block commit
        nilfs2: implement nilfs_show_options to display mount options in /proc/mounts
        nilfs2: always lookup disk block address before reading metadata block
        nilfs2: use semaphore to protect pointer to a writable FS-instance
        nilfs2: fix format string compile warning (ino_t)
        ...
      af8cb8aa
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 · 6cdb5930
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
        cifs: consolidate reconnect logic in smb_init routines
        cifs: Replace wrtPending with a real reference count
        cifs: protect GlobalOplock_Q with its own spinlock
        cifs: use tcon pointer in cifs_show_options
        cifs: send IPv6 addr in upcall with colon delimiters
        [CIFS] Fix checkpatch warnings
        PATCH] cifs: fix broken mounts when a SSH tunnel is used (try #4)
        [CIFS] Memory leak in ntlmv2 hash calculation
        [CIFS] potential NULL dereference in parse_DFS_referrals()
      6cdb5930
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6 · 99bc4706
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: (21 commits)
        sparc64: Initial niagara2 perf counter support.
        sparc64: Perf counter 'nop' event is not constant.
        sparc64: Provide a way to specify a perf counter overflow IRQ enable bit.
        sparc64: Provide hypervisor tracing bit support for perf counters.
        sparc64: Initial hw perf counter support.
        sparc64: Implement a real set_perf_counter_pending().
        sparc64: Use nmi_enter() and nmi_exit(), as needed.
        sparc64: Provide extern decls for sparc_??u_type strings.
        sparc64: Make touch_nmi_watchdog() actually work.
        sparc64: Kill unnecessary cast in profile_timer_exceptions_notify().
        sparc64: Manage NMI watchdog enabling like x86.
        sparc: add basic support for 'perf'
        sparc: convert /proc/io_map, /proc/dvma_map to seq_file
        sparc, leon: sparc-leon specific SRMMU initialization and bootup fixes.
        sparc,leon: Added support for AMBAPP bus.
        sparc,leon: Introduce the sparc-leon CPU type.
        sparc,leon: Redefine MMU register access asi if CONFIG_LEON
        sparc,leon: CONFIG_SPARC_LEON option and leon specific files.
        sparc64: cheaper asm/uaccess.h inclusion
        SPARC: fix duplicate declaration
        ...
      99bc4706
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 · d7e9660a
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1623 commits)
        netxen: update copyright
        netxen: fix tx timeout recovery
        netxen: fix file firmware leak
        netxen: improve pci memory access
        netxen: change firmware write size
        tg3: Fix return ring size breakage
        netxen: build fix for INET=n
        cdc-phonet: autoconfigure Phonet address
        Phonet: back-end for autoconfigured addresses
        Phonet: fix netlink address dump error handling
        ipv6: Add IFA_F_DADFAILED flag
        net: Add DEVTYPE support for Ethernet based devices
        mv643xx_eth.c: remove unused txq_set_wrr()
        ucc_geth: Fix hangs after switching from full to half duplex
        ucc_geth: Rearrange some code to avoid forward declarations
        phy/marvell: Make non-aneg speed/duplex forcing work for 88E1111 PHYs
        drivers/net/phy: introduce missing kfree
        drivers/net/wan: introduce missing kfree
        net: force bridge module(s) to be GPL
        Subject: [PATCH] appletalk: Fix skb leak when ipddp interface is not loaded
        ...
      
      Fixed up trivial conflicts:
      
       - arch/x86/include/asm/socket.h
      
         converted to <asm-generic/socket.h> in the x86 tree.  The generic
         header has the same new #define's, so that works out fine.
      
       - drivers/net/tun.c
      
         fix conflict between 89f56d1e ("tun: reuse struct sock fields") that
         switched over to using 'tun->socket.sk' instead of the redundantly
         available (and thus removed) 'tun->sk', and 2b980dbd ("lsm: Add hooks
         to the TUN driver") which added a new 'tun->sk' use.
      
         Noted in 'next' by Stephen Rothwell.
      d7e9660a
    • Linus Torvalds's avatar
      Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip · b8cb48aa
      Linus Torvalds authored
      * 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
        x86: split __phys_addr out into separate file
        xen: use stronger barrier after unlocking lock
        xen: only enable interrupts while actually blocking for spinlock
        xen: make -fstack-protector work under Xen
      b8cb48aa
    • Jan Kara's avatar
      udf: Fix possible corruption when close races with write · cbc8cc33
      Jan Kara authored
      
      
      When we close a file, we remove preallocated blocks from it. But this
      truncation was not protected by i_mutex and thus it could have raced with a
      write through a different fd and cause crashes or even filesystem corruption.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      cbc8cc33
    • Jan Kara's avatar
      udf: Perform preallocation only for regular files · 81056dd0
      Jan Kara authored
      
      
      So far we preallocated blocks also for directories but that brings a
      problem, when to get rid of preallocated blocks we don't need. So far
      we removed them in udf_clear_inode() which has a disadvantage that
      1) blocks are unavailable long after writing to a directory finished
         and thus one can get out of space unnecessarily early
      2) releasing blocks from udf_clear_inode is problematic because VFS
         does not expect us to redirty inode there and it also slows down
         memory reclaim.
      
      So preallocate blocks only for regular files where we can drop preallocation
      in udf_release_file.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      81056dd0
    • Jan Kara's avatar
      udf: Remove wrong assignment in udf_symlink · 7c6e3d1a
      Jan Kara authored
      
      
      Recomputation of the pointer was wrong (it should have been just increment).
      Luckily, we never use the computed value. Remove it.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      7c6e3d1a
    • Jan Kara's avatar
      udf: Remove dead code · 5891d9dd
      Jan Kara authored
      
      
      Remove code that gets never used.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      5891d9dd
    • Christoph Hellwig's avatar
      fsync: wait for data writeout completion before calling ->fsync · 2daea67e
      Christoph Hellwig authored
      
      
      Currenly vfs_fsync(_range) first calls filemap_fdatawrite to write out
      the data, the calls into ->fsync to write out the metadata and then finally
      calls filemap_fdatawait to wait for the data I/O to complete.  What sounds
      like a clever micro-optimization actually is nast trap for many filesystems.
      
      For many modern filesystems i_size or other inode information is only
      updated on I/O completion and we need to wait for I/O to finish before
      we can write out the metadata.  For old fashionen filesystems that
      instanciate blocks during the actual write and also update the metadata
      at that point it opens up a large window were we could expose uninitialized
      blocks after a crash.  While a few filesystems that need it already wait
      for the I/O to finish inside their ->fsync methods it is rather suboptimal
      as it is done under the i_mutex and also always for the whole file instead
      of just a part as we could do for O_SYNC handling.
      
      Here is a small audit of all fsync instances in the tree:
      
       - spufs_mfc_fsync:
       - ps3flash_fsync:
       - vol_cdev_fsync:
       - printer_fsync:
       - fb_deferred_io_fsync:
       - bad_file_fsync:
       - simple_sync_file:
      
      	don't care - filesystems/drivers do't use the page cache or are
      	purely in-memory.
      
       - simple_fsync:
       - file_fsync:
       - affs_file_fsync:
       - fat_file_fsync:
       - jfs_fsync:
       - ubifs_fsync:
       - reiserfs_dir_fsync:
       - reiserfs_sync_file:
      
      	never touch pagecache themselves.  We need to wait before if we do
      	not want to expose stale data after an allocation.
      
       - afs_fsync:
       - fuse_fsync_common:
      
      	do the waiting writeback itself in awkward ways, would benefit from
      	proper semantics
      
       - block_fsync:
      
      	Does a filemap_write_and_wait on the block device inode.  Because we
      	now have f_mapping that is the same inode we call it on in vfs_fsync.
      	So just removing it and letting the VFS do the work in one go would
      	be an improvement.
      
       - btrfs_sync_file:
       - cifs_fsync:
       - xfs_file_fsync:
      
      	need the wait first and currently do it themselves. would benefit from
      	doing it outside i_mutex.
      
       - coda_fsync:
       - ecryptfs_fsync:
       - exofs_file_fsync:
       - shm_fsync:
      
      	only passes the fsync through to the lower layer
      
       - ext3_sync_file:
      
      	doesn't seem to care, comments are confusing.
      
       - ext4_sync_file:
      
      	would need the wait to work correctly for delalloc mode with late
      	i_size updates.  Otherwise the ext3 comment applies.
      
      	currently implemens it's own writeback and wait in an odd way,
      	could benefit from doing it properly.
      
       - gfs2_fsync:
      
      	not needed for journaled data mode, but probably harmless there.
      	Currently writes back data asynchronously itself.  Needs some
      	major audit.
      
       - hostfs_fsync:
      
      	just calls fsync/datasync on the host FD.  Without the wait before
      	data might not even be inflight yet if we're unlucky.
      
       - hpfs_file_fsync:
       - ncp_fsync:
      
      	no-ops.  Dangerous before and after.
      
       - jffs2_fsync:
      
      	just calls jffs2_flush_wbuf_gc, not sure how this relates to data.
      
       - nfs_fsync_dir:
      
      	just increments stats, claims all directory operations are synchronous
      
       - nfs_file_fsync:
      
      	only writes out data???  Looks very odd.
      
       - nilfs_sync_file:
      
      	looks like it expects all data done, but not sure from the code
      
       - ntfs_dir_fsync:
       - ntfs_file_fsync:
      
      	appear to do their own data writeback.  Very convoluted code.
      
       - ocfs2_sync_file:
      
      	does it's own data writeback, but no wait.  probably needs the wait.
      
       - smb_fsync:
      
      	according to a comment expects all pages written already, probably needs
      	the wait before.
      
      This patch only changes vfs_fsync_range, removal of the wait in the methods
      that have it is left to the filesystem maintainers.  Note that most
      filesystems really do need an audit for their fsync methods given the
      gems found in this very brief audit.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      2daea67e
    • Jan Kara's avatar
      vfs: Remove generic_osync_inode() and sync_page_range{_nolock}() · 18f2ee70
      Jan Kara authored
      
      
      Remove these three functions since nobody uses them anymore.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      18f2ee70
    • Jan Kara's avatar
      fat: Opencode sync_page_range_nolock() · 2f3d675b
      Jan Kara authored
      
      
      fat_cont_expand() is the only user of sync_page_range_nolock(). It's also the
      only user of generic_osync_inode() which does not have a file open.  So
      opencode needed actions for FAT so that we can convert generic_osync_inode() to
      a standard syncing path.
      
      Update a comment about generic_osync_inode().
      
      CC: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      2f3d675b
    • Jan Kara's avatar
      pohmelfs: Use new syncing helper · aa3caafe
      Jan Kara authored
      
      
      Use new generic_write_sync() helper instead of sync_page_range().
      Acked-by: default avatarEvgeniy Polyakov <zbr@ioremap.net>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      aa3caafe
    • Jan Kara's avatar
      xfs: Convert sync_page_range() to simple filemap_write_and_wait_range() · af0f4414
      Jan Kara authored
      
      
      Christoph Hellwig says that it is enough for XFS to call
      filemap_write_and_wait_range() instead of sync_page_range() because we do
      all the metadata syncing when forcing the log.
      
      CC: Felix Blyakher <felixb@sgi.com>
      CC: xfs@oss.sgi.com
      CC: Christoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      af0f4414
    • Jan Kara's avatar
      ocfs2: Update syncing after splicing to match generic version · d23c937b
      Jan Kara authored
      
      
      Update ocfs2 specific splicing code to use generic syncing helper. The sync now
      does not happen under rw_lock because generic_write_sync() acquires i_mutex
      which ranks above rw_lock. That should not matter because standard fsync path
      does not hold it either.
      Acked-by: default avatarJoel Becker <Joel.Becker@oracle.com>
      Acked-by: default avatarMark Fasheh <mfasheh@suse.com>
      CC: ocfs2-devel@oss.oracle.com
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      d23c937b
    • Jan Kara's avatar
      ntfs: Use new syncing helpers and update comments · ebbbf757
      Jan Kara authored
      
      
      Use new syncing helpers in .write and .aio_write functions. Also
      remove superfluous syncing in ntfs_file_buffered_write() and update
      comments about generic_osync_inode().
      
      CC: Anton Altaparmakov <aia21@cantab.net>
      CC: linux-ntfs-dev@lists.sourceforge.net
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      ebbbf757
    • Jan Kara's avatar
      ext4: Remove syncing logic from ext4_file_write · 0d34ec62
      Jan Kara authored
      
      
      The syncing is now properly handled by generic_file_aio_write() so
      no special ext4 code is needed.
      
      CC: linux-ext4@vger.kernel.org
      CC: tytso@mit.edu
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      0d34ec62
    • Jan Kara's avatar
      ext3: Remove syncing logic from ext3_file_write · e367626b
      Jan Kara authored
      
      
      Syncing is now properly done by generic_file_aio_write() so no special logic is
      needed in ext3.
      
      CC: linux-ext4@vger.kernel.org
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      e367626b
    • Jan Kara's avatar
      ext2: Update comment about generic_osync_inode · a2a735ad
      Jan Kara authored
      
      
      We rely on generic_write_sync() now.
      
      CC: linux-ext4@vger.kernel.org
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      a2a735ad
    • Jan Kara's avatar
      vfs: Introduce new helpers for syncing after writing to O_SYNC file or IS_SYNC inode · 148f948b
      Jan Kara authored
      
      
      Introduce new function for generic inode syncing (vfs_fsync_range) and use
      it from fsync() path. Introduce also new helper for syncing after a sync
      write (generic_write_sync) using the generic function.
      
      Use these new helpers for syncing from generic VFS functions. This makes
      O_SYNC writes to block devices acquire i_mutex for syncing. If we really
      care about this, we can make block_fsync() drop the i_mutex and reacquire
      it before it returns.
      
      CC: Evgeniy Polyakov <zbr@ioremap.net>
      CC: ocfs2-devel@oss.oracle.com
      CC: Joel Becker <joel.becker@oracle.com>
      CC: Felix Blyakher <felixb@sgi.com>
      CC: xfs@oss.sgi.com
      CC: Anton Altaparmakov <aia21@cantab.net>
      CC: linux-ntfs-dev@lists.sourceforge.net
      CC: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
      CC: linux-ext4@vger.kernel.org
      CC: tytso@mit.edu
      Acked-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      148f948b
    • Christoph Hellwig's avatar
      vfs: Rename generic_file_aio_write_nolock · eef99380
      Christoph Hellwig authored
      
      
      generic_file_aio_write_nolock() is now used only by block devices and raw
      character device. Filesystems should use __generic_file_aio_write() in case
      generic_file_aio_write() doesn't suit them. So rename the function to
      blkdev_aio_write() and move it to fs/blockdev.c.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      eef99380