1. 07 3月, 2009 1 次提交
  2. 20 2月, 2009 2 次提交
  3. 04 2月, 2009 1 次提交
  4. 19 1月, 2009 3 次提交
  5. 10 1月, 2009 2 次提交
    • T
      filesystem freeze: remove XFS specific ioctl interfaces for freeze feature · 8e961870
      Takashi Sato 提交于
      It removes XFS specific ioctl interfaces and request codes
      for freeze feature.
      
      This patch has been supplied by David Chinner.
      Signed-off-by: NDave Chinner <dgc@sgi.com>
      Signed-off-by: NTakashi Sato <t-sato@yk.jp.nec.com>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: <xfs-masters@oss.sgi.com>
      Cc: <linux-ext4@vger.kernel.org>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Kleikamp <shaggy@austin.ibm.com>
      Cc: Alasdair G Kergon <agk@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8e961870
    • T
      filesystem freeze: add error handling of write_super_lockfs/unlockfs · c4be0c1d
      Takashi Sato 提交于
      Currently, ext3 in mainline Linux doesn't have the freeze feature which
      suspends write requests.  So, we cannot take a backup which keeps the
      filesystem's consistency with the storage device's features (snapshot and
      replication) while it is mounted.
      
      In many case, a commercial filesystem (e.g.  VxFS) has the freeze feature
      and it would be used to get the consistent backup.
      
      If Linux's standard filesystem ext3 has the freeze feature, we can do it
      without a commercial filesystem.
      
      So I have implemented the ioctls of the freeze feature.
      I think we can take the consistent backup with the following steps.
      1. Freeze the filesystem with the freeze ioctl.
      2. Separate the replication volume or create the snapshot
         with the storage device's feature.
      3. Unfreeze the filesystem with the unfreeze ioctl.
      4. Take the backup from the separated replication volume
         or the snapshot.
      
      This patch:
      
      VFS:
      Changed the type of write_super_lockfs and unlockfs from "void"
      to "int" so that they can return an error.
      Rename write_super_lockfs and unlockfs of the super block operation
      freeze_fs and unfreeze_fs to avoid a confusion.
      
      ext3, ext4, xfs, gfs2, jfs:
      Changed the type of write_super_lockfs and unlockfs from "void"
      to "int" so that write_super_lockfs returns an error if needed,
      and unlockfs always returns 0.
      
      reiserfs:
      Changed the type of write_super_lockfs and unlockfs from "void"
      to "int" so that they always return 0 (success) to keep a current behavior.
      Signed-off-by: NTakashi Sato <t-sato@yk.jp.nec.com>
      Signed-off-by: NMasayuki Hamaguchi <m-hamaguchi@ys.jp.nec.com>
      Cc: <xfs-masters@oss.sgi.com>
      Cc: <linux-ext4@vger.kernel.org>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Kleikamp <shaggy@austin.ibm.com>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Alasdair G Kergon <agk@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c4be0c1d
  6. 09 1月, 2009 4 次提交
  7. 06 1月, 2009 1 次提交
  8. 24 12月, 2008 1 次提交
    • L
      [XFS] Fix race in xfs_write() between direct and buffered I/O with DMAPI · 25051158
      Lachlan McIlroy 提交于
      The iolock is dropped and re-acquired around the call to XFS_SEND_NAMESP().
      While the iolock is released the file can become cached.  We then
      'goto retry' and - if we are doing direct I/O - mapping->nrpages may now be
      non zero but need_i_mutex will be zero and we will hit the WARN_ON().
      
      Since we have dropped the I/O lock then the file size may have also changed
      so what we need to do here is 'goto start' like we do for the XFS_SEND_DATA()
      DMAPI event.
      
      We also need to update the filesize before releasing the iolock so that
      needs to be done before the XFS_SEND_NAMESP event.  If we drop the iolock
      before setting the filesize we could race with a truncate.
      Reviewed-by: NChristoph Hellwig <hch@infradead.org>
      Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
      25051158
  9. 22 12月, 2008 2 次提交
  10. 12 12月, 2008 1 次提交
  11. 11 12月, 2008 2 次提交
  12. 05 12月, 2008 2 次提交
  13. 04 12月, 2008 13 次提交
  14. 02 12月, 2008 5 次提交