1. 31 3月, 2006 2 次提交
  2. 30 3月, 2006 2 次提交
  3. 29 3月, 2006 3 次提交
  4. 22 3月, 2006 1 次提交
  5. 21 3月, 2006 1 次提交
    • S
      [GFS2] Fix bug in directory code and tidy up · c752666c
      Steven Whitehouse 提交于
      Due to a typo, the dir leaf split operation was (for the first
      split in a directory) writing the new hash vaules at the
      wrong offset. This is now fixed.
      
      Also some other tidy ups are included:
      
       - We use GFS2's hash function for dentries (see ops_dentry.c) so that
         we don't have to keep recalculating the hash values.
       - A lot of common code is eliminated between the various directory
         lookup routines.
       - Better error checking on directory lookup (previously different
         routines checked for different errors)
       - The leaf split operation has a couple of redundant operations
         removed from it, so it should be faster.
      
      There is still further scope for further clean ups in the directory
      code, and readdir in particular could do with slimming down a bit.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      c752666c
  6. 03 3月, 2006 1 次提交
    • S
      [GFS2] Add gfs2meta filesystem · 419c93e0
      Steven Whitehouse 提交于
      In order to separate out the filesystem's metadata from "normal"
      files and directories, a new filesystem type has been created.
      It is called gfs2meta and mounting it gives access to the files
      that were previously under .gfs2_admin (well still are until mkfs
      is altered, which is next on the adgenda).
      
      Its not currently possible to mount both gfs2 and gfs2meta on the
      same block device at the same time. A future patch will allow that
      to happen.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      419c93e0
  7. 02 3月, 2006 3 次提交
    • S
      [GFS2] Fix some bugs · b4dc7291
      Steven Whitehouse 提交于
      Fix a bug I introduced earlier with a kfree() and usage of
      a structure in the wrong order. Also try and get the counts
      of the journaled data buffers "more correct". Still some work
      to do in this area though.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      b4dc7291
    • S
      [GFS2] Tidy up mount code. · c9fd4307
      Steven Whitehouse 提交于
      We no longer lookup ".gfs2_admin" in the root directory in order to
      find it, but instead use the inode number given in the superblock.
      Both the root directory and the admin directory are now looked up using
      the same routine, so the redundant code is removed.
      
      Also, there is no longer a reference to the root inode in the
      GFS2 super block. When required this can be retreived via
      sb->s_root->d_inode instead.
      
      Assuming that we introduce a metadata filesystem type for GFS, then
      this is a first step towards that goal.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      c9fd4307
    • S
      [GFS2] Remove uneeded memory allocation · e317ffcb
      Steven Whitehouse 提交于
      For every filesystem operation where we need a transaction, we
      now make one less memory allocation.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      e317ffcb
  8. 28 2月, 2006 5 次提交
  9. 27 2月, 2006 1 次提交
  10. 23 2月, 2006 4 次提交
  11. 22 2月, 2006 1 次提交
  12. 21 2月, 2006 1 次提交
  13. 15 2月, 2006 2 次提交
  14. 14 2月, 2006 3 次提交
    • S
      [GFS2] Fix the bugs I introduced in the last patch but one · 4dd651ad
      Steven Whitehouse 提交于
      Various endianess changes required in the directory code.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      4dd651ad
    • S
      [GFS2] Put back O_DIRECT support · d1665e41
      Steven Whitehouse 提交于
      This patch adds back O_DIRECT support with various caveats
      attached:
      
       1. Journaled data can be read via O_DIRECT since its now the
          same on disk format as normal data files.
       2. Journaled data writes with O_DIRECT will be failed sliently
          back to normal writes (should we really do this I wonder or
          should we return an error instead?)
       3. Stuffed files will be failed back to normal buffered I/O
       4. All the usual corner cases (write beyond current end of file,
          write to an unallocated block) will also revert to normal buffered I/O.
      
      The I/O path is slightly odd as reads arrive at the page cache layer
      with the lock for the file already held, but writes arrive unlocked.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      d1665e41
    • S
      [GFS2] Change ondisk format (hopefully for the last time) · fc69d0d3
      Steven Whitehouse 提交于
      There were one or two fields in structures which didn't get changed
      last time back to their gfs1 sizes and alignments. One or two constants
      have also changed back to their original values which were missed the
      first time.
      
      Its possible that indirect pointer blocks might need to change. If
      they don't we'll have to rewrite them all on upgrade due to a change
      in the amount of padding that they use.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      fc69d0d3
  15. 13 2月, 2006 1 次提交
    • S
      [GFS2] Fix for root inode ref count bug · 7359a19c
      Steven Whitehouse 提交于
      Umount is now working correctly again. The bug was due to
      not getting an extra ref count when mounting the fs. We
      should have bumped it by two (once for the internal pointer
      to the root inode from the super block and once for the
      inode hanging off the dcache entry for root).
      
      Also this patch tidys up the code dealing with looking up
      and creating inodes. We now pass Linux inodes (with gfs2_inodes
      attached) rather than the other way around and this reduces code
      duplication in various places.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      7359a19c
  16. 08 2月, 2006 1 次提交
    • S
      [GFS2] Make journaled data files identical to normal files on disk · 18ec7d5c
      Steven Whitehouse 提交于
      This is a very large patch, with a few still to be resolved issues
      so you might want to check out the previous head of the tree since
      this is known to be unstable. Fixes for the various bugs will be
      forthcoming shortly.
      
      This patch removes the special data format which has been used
      up till now for journaled data files. Directories still retain the
      old format so that they will remain on disk compatible with earlier
      releases. As a result you can now do the following with journaled
      data files:
      
       1) mmap them
       2) export them over NFS
       3) convert to/from normal files whenever you want to (the zero length
          restriction is gone)
      
      In addition the level at which GFS' locking is done has changed for all
      files (since they all now use the page cache) such that the locking is
      done at the page cache level rather than the level of the fs operations.
      This should mean that things like loopback mounts and other things which
      touch the page cache directly should now work.
      
      Current known issues:
      
       1. There is a lock mode inversion problem related to the resource
          group hold function which needs to be resolved.
       2. Any significant amount of I/O causes an oops with an offset of hex 320
          (NULL pointer dereference) which appears to be related to a journaled data
          buffer appearing on a list where it shouldn't be.
       3. Direct I/O writes are disabled for the time being (will reappear later)
       4. There is probably a deadlock between the page lock and GFS' locks under
          certain combinations of mmap and fs operation I/O.
       5. Issue relating to ref counting on internally used inodes causes a hang
          on umount (discovered before this patch, and not fixed by it)
       6. One part of the directory metadata is different from GFS1 and will need
          to be resolved before next release.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      18ec7d5c
  17. 31 1月, 2006 2 次提交
    • S
      [GFS2] Update truncate function (shrinking partial blocks) · 257f9b4e
      Steven Whitehouse 提交于
      Update the function in GFS2 which deals with truncation of
      partial blocks. Some of the code is "borrowed" from ext3
      since it appears to give a good model of how to do this
      operation. The function is renamed gfs2_block_truncate_page
      accordingly.
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      257f9b4e
    • S
      [GFS2] Add gfs2_internal_read() · f42faf4f
      Steven Whitehouse 提交于
      Add the new external read function. Its temporarily in jdata.c
      even though the protoype is in ops_file.h - this will change
      shortly. The current implementation will change to a page cache
      one when that happens.
      
      In order to effect the above changes, the various internal inodes
      now have Linux inodes attached to them. We keep the references to
      the Linux inodes, rather than the gfs2_inodes in the super block.
      
      In order to get everything to work correctly I've had to reorder
      the init sequence on mount (which I should probably have done
      earlier when .gfs2_admin was made visible).
      Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      f42faf4f
  18. 30 1月, 2006 6 次提交
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