1. 06 6月, 2014 4 次提交
  2. 14 4月, 2014 1 次提交
  3. 31 10月, 2013 3 次提交
    • D
      xfs: vectorise encoding/decoding directory headers · 01ba43b8
      Dave Chinner 提交于
      Conversion from on-disk structures to in-core header structures
      currently relies on magic number checks. If the magic number is
      wrong, but one of the supported values, we do the wrong thing with
      the encode/decode operation. Split these functions so that there are
      discrete operations for the specific directory format we are
      handling.
      
      In doing this, move all the header encode/decode functions to
      xfs_da_format.c as they are directly manipulating the on-disk
      format. It should be noted that all the growth in binary size is
      from xfs_da_format.c - the rest of the code actaully shrinks.
      
         text    data     bss     dec     hex filename
       794490   96802    1096  892388   d9de4 fs/xfs/xfs.o.orig
       792986   96802    1096  890884   d9804 fs/xfs/xfs.o.p1
       792350   96802    1096  890248   d9588 fs/xfs/xfs.o.p2
       789293   96802    1096  887191   d8997 fs/xfs/xfs.o.p3
       789005   96802    1096  886903   d8997 fs/xfs/xfs.o.p4
       789061   96802    1096  886959   d88af fs/xfs/xfs.o.p5
       789733   96802    1096  887631   d8b4f fs/xfs/xfs.o.p6
       791421   96802    1096  889319   d91e7 fs/xfs/xfs.o.p7
      Signed-off-by: NDave Chinner <dchinner@redhat.com>
      Reviewed-by: NBen Myers <bpm@sgi.com>
      Signed-off-by: NBen Myers <bpm@sgi.com>
      01ba43b8
    • D
      xfs: vectorise directory leaf operations · 4141956a
      Dave Chinner 提交于
      Next step in the vectorisation process is the leaf block
      encode/decode operations. Most of the operations on leaves are
      handled by the data block vectors, so there are relatively few of
      them here.
      
      Because of all the shuffling of code and having to pass more state
      to some functions, this patch doesn't directly reduce the size of
      the binary. It does open up many more opportunities for factoring
      and optimisation, however.
      
         text    data     bss     dec     hex filename
       794490   96802    1096  892388   d9de4 fs/xfs/xfs.o.orig
       792986   96802    1096  890884   d9804 fs/xfs/xfs.o.p1
       792350   96802    1096  890248   d9588 fs/xfs/xfs.o.p2
       789293   96802    1096  887191   d8997 fs/xfs/xfs.o.p3
       789005   96802    1096  886903   d8997 fs/xfs/xfs.o.p4
       789061   96802    1096  886959   d88af fs/xfs/xfs.o.p5
      Signed-off-by: NDave Chinner <dchinner@redhat.com>
      Reviewed-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NBen Myers <bpm@sgi.com>
      4141956a
    • D
      xfs: vectorise directory data operations part 2 · 2ca98774
      Dave Chinner 提交于
      Convert the rest of the directory data block encode/decode
      operations to vector format.
      
      This further reduces the size of the built binary:
      
         text    data     bss     dec     hex filename
       794490   96802    1096  892388   d9de4 fs/xfs/xfs.o.orig
       792986   96802    1096  890884   d9804 fs/xfs/xfs.o.p1
       792350   96802    1096  890248   d9588 fs/xfs/xfs.o.p2
       789293   96802    1096  887191   d8997 fs/xfs/xfs.o.p3
       789005   96802    1096  886903   d8997 fs/xfs/xfs.o.p4
      Signed-off-by: NDave Chinner <dchinner@redhat.com>
      Reviewed-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NBen Myers <bpm@sgi.com>
      2ca98774
  4. 22 8月, 2013 1 次提交
    • D
      xfs: Add read-only support for dirent filetype field · 0cb97766
      Dave Chinner 提交于
      Add support for the file type field in directory entries so that
      readdir can return the type of the inode the dirent points to to
      userspace without first having to read the inode off disk.
      
      The encoding of the type field is a single byte that is added to the
      end of the directory entry name length. For all intents and
      purposes, it appends a "hidden" byte to the name field which
      contains the type information. As the directory entry is already of
      dynamic size, helpers are already required to access and decode the
      direct entry structures.
      
      Hence the relevent extraction and iteration helpers are updated to
      understand the hidden byte.  Helpers for reading and writing the
      filetype field from the directory entries are also added. Only the
      read helpers are used by this patch.  It also adds all the code
      necessary to read the type information out of the dirents on disk.
      
      Further we add the superblock feature bit and helpers to indicate
      that we understand the on-disk format change. This is not a
      compatible change - existing kernels cannot read the new format
      successfully - so an incompatible feature flag is added. We don't
      yet allow filesystems to mount with this flag yet - that will be
      added once write support is added.
      
      Finally, the code to take the type from the VFS, convert it to an
      XFS on-disk type and put it into the xfs_name structures passed
      around is added, but the directory code does not use this field yet.
      That will be in the next patch.
      Signed-off-by: NDave Chinner <dchinner@redhat.com>
      Reviewed-by: NMark Tinguely <tinguely@sgi.com>
      Signed-off-by: NBen Myers <bpm@sgi.com>
      0cb97766
  5. 13 8月, 2013 3 次提交
  6. 29 6月, 2013 1 次提交
  7. 28 4月, 2013 4 次提交
  8. 16 11月, 2012 9 次提交
  9. 02 7月, 2012 1 次提交
  10. 13 7月, 2011 1 次提交
    • C
      xfs: reshuffle dir2 headers · 57926640
      Christoph Hellwig 提交于
      Replace the current mess of dir2 headers with just three that have a clear
      purpose:
      
       - xfs_dir2_format.h for all format definitions, including the inline helpers
         to access our variable size structures
       - xfs_dir2_priv.h for all prototypes that are internal to the dir2 code
         and not needed by anything outside of the directory code.  For this
         purpose xfs_da_btree.c, and phase6.c in xfs_repair are considered part
         of the directory code.
       - xfs_dir2.h for the public interface to the directory code
      
      In addition to the reshuffle I have also update the comments to not only
      match the new file structure, but also to describe the directory format
      better.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Reviewed-by: NAlex Elder <aelder@sgi.com>
      Reviewed-by: NDave Chinner <dchinner@redhat.com>
      57926640