1. 26 Aug, 2009 2 commits
    • Steven Whitehouse's avatar
      GFS2: Rename eattr.[ch] as xattr.[ch] · 307cf6e6
      Steven Whitehouse authored
      
      
      Use the more conventional name for the extended attribute
      support code. Update all the places which care.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      307cf6e6
    • Steven Whitehouse's avatar
      GFS2: Clean up of extended attribute support · 40b78a32
      Steven Whitehouse authored
      
      
      This has been on my list for some time. We need to change the way
      in which we handle extended attributes to allow faster file creation
      times (by reducing the number of transactions required) and the
      extended attribute code is the main obstacle to this.
      
      In addition to that, the VFS provides a way to demultiplex the xattr
      calls which we ought to be using, rather than rolling our own. This
      patch changes the GFS2 code to use that VFS feature and as a result
      the code shrinks by a couple of hundred lines or so, and becomes
      easier to read.
      
      I'm planning on doing further clean up work in this area, but this
      patch is a good start. The cleaned up code also uses the more usual
      "xattr" shorthand, I plan to eliminate the use of "eattr" eventually
      and in the mean time it serves as a flag as to which bits of the code
      have been updated.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      40b78a32
  2. 31 Mar, 2009 1 commit
  3. 24 Mar, 2009 1 commit
    • Steven Whitehouse's avatar
      GFS2: Merge lock_dlm module into GFS2 · f057f6cd
      Steven Whitehouse authored
      
      
      This is the big patch that I've been working on for some time
      now. There are many reasons for wanting to make this change
      such as:
       o Reducing overhead by eliminating duplicated fields between structures
       o Simplifcation of the code (reduces the code size by a fair bit)
       o The locking interface is now the DLM interface itself as proposed
         some time ago.
       o Fewer lookups of glocks when processing replies from the DLM
       o Fewer memory allocations/deallocations for each glock
       o Scope to do further optimisations in the future (but this patch is
         more than big enough for now!)
      
      Please note that (a) this patch relates to the lock_dlm module and
      not the DLM itself, that is still a separate module; and (b) that
      we retain the ability to build GFS2 as a standalone single node
      filesystem with out requiring the DLM.
      
      This patch needs a lot of testing, hence my keeping it I restarted
      my -git tree after the last merge window. That way, this has the maximum
      exposure before its merged. This is (modulo a few minor bug fixes) the
      same patch that I've been posting on and off the the last three months
      and its passed a number of different tests so far.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      f057f6cd
  4. 05 Jan, 2009 1 commit
  5. 10 Apr, 2008 1 commit
  6. 17 Jul, 2007 1 commit
    • Satyam Sharma's avatar
      Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check · 3bd858ab
      Satyam Sharma authored
      
      
      Introduce is_owner_or_cap() macro in fs.h, and convert over relevant
      users to it. This is done because we want to avoid bugs in the future
      where we check for only effective fsuid of the current task against a
      file's owning uid, without simultaneously checking for CAP_FOWNER as
      well, thus violating its semantics.
      [ XFS uses special macros and structures, and in general looked ...
      untouchable, so we leave it alone -- but it has been looked over. ]
      
      The (current->fsuid != inode->i_uid) check in generic_permission() and
      exec_permission_lite() is left alone, because those operations are
      covered by CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH. Similarly operations
      falling under the purview of CAP_CHOWN and CAP_LEASE are also left alone.
      Signed-off-by: default avatarSatyam Sharma <ssatyam@cse.iitk.ac.in>
      Cc: Al Viro <viro@ftp.linux.org.uk>
      Acked-by: default avatarSerge E. Hallyn <serge@hallyn.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3bd858ab
  7. 30 Nov, 2006 4 commits
  8. 25 Sep, 2006 1 commit
  9. 19 Sep, 2006 1 commit
  10. 04 Sep, 2006 1 commit
  11. 01 Sep, 2006 1 commit
    • Steven Whitehouse's avatar
      [GFS2] Update copyright, tidy up incore.h · e9fc2aa0
      Steven Whitehouse authored
      
      
      As per comments from Jan Engelhardt <jengelh@linux01.gwdg.de> this
      updates the copyright message to say "version" in full rather than
      "v.2". Also incore.h has been updated to remove forward structure
      declarations which are not required.
      
      The gfs2_quota_lvb structure has now had endianess annotations added
      to it. Also quota.c has been updated so that we now store the
      lvb data locally in endian independant format to avoid needing
      a structure in host endianess too. As a result the endianess
      conversions are done as required at various points and thus the
      conversion routines in lvb.[ch] are no longer required. I've
      moved the one remaining constant in lvb.h thats used into lm.h
      and removed the unused lvb.[ch].
      
      I have not changed the HIF_ constants. That is left to a later patch
      which I hope will unify the gh_flags and gh_iflags fields of the
      struct gfs2_holder.
      
      Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      e9fc2aa0
  12. 22 Jun, 2006 1 commit
  13. 14 Jun, 2006 1 commit
    • Steven Whitehouse's avatar
      [GFS2] Fix unlinked file handling · feaa7bba
      Steven Whitehouse authored
      
      
      This patch fixes the way we have been dealing with unlinked,
      but still open files. It removes all limits (other than memory
      for inodes, as per every other filesystem) on numbers of these
      which we can support on GFS2. It also means that (like other
      fs) its the responsibility of the last process to close the file
      to deallocate the storage, rather than the person who did the
      unlinking. Note that with GFS2, those two events might take place
      on different nodes.
      
      Also there are a number of other changes:
      
       o We use the Linux inode subsystem as it was intended to be
      used, wrt allocating GFS2 inodes
       o The Linux inode cache is now the point which we use for
      local enforcement of only holding one copy of the inode in
      core at once (previous to this we used the glock layer).
       o We no longer use the unlinked "special" file. We just ignore it
      completely. This makes unlinking more efficient.
       o We now use the 4th block allocation state. The previously unused
      state is used to track unlinked but still open inodes.
       o gfs2_inoded is no longer needed
       o Several fields are now no longer needed (and removed) from the in
      core struct gfs2_inode
       o Several fields are no longer needed (and removed) from the in core
      superblock
      
      There are a number of future possible optimisations and clean ups
      which have been made possible by this patch.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      feaa7bba
  14. 18 May, 2006 2 commits
  15. 27 Feb, 2006 1 commit
    • Steven Whitehouse's avatar
      [GFS2] Macros removal in gfs2.h · 5c676f6d
      Steven Whitehouse authored
      
      
      As suggested by Pekka Enberg <penberg@cs.helsinki.fi>.
      
      The DIV_RU macro is renamed DIV_ROUND_UP and and moved to kernel.h
      The other macros are gone from gfs2.h as (although not requested
      by Pekka Enberg) are a number of included header file which are now
      included individually. The inode number comparison function is
      now an inline function.
      
      The DT2IF and IF2DT may be addressed in a future patch.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      5c676f6d
  16. 18 Jan, 2006 1 commit
  17. 16 Jan, 2006 1 commit