1. 17 Apr, 2013 2 commits
  2. 27 Feb, 2013 1 commit
  3. 04 Feb, 2013 1 commit
  4. 31 Jan, 2013 1 commit
  5. 24 Jan, 2013 11 commits
  6. 17 Jan, 2013 1 commit
  7. 18 Dec, 2012 1 commit
  8. 09 Oct, 2012 1 commit
    • Konstantin Khlebnikov's avatar
      mm: kill vma flag VM_CAN_NONLINEAR · 0b173bc4
      Konstantin Khlebnikov authored
      
      
      Move actual pte filling for non-linear file mappings into the new special
      vma operation: ->remap_pages().
      
      Filesystems must implement this method to get non-linear mapping support,
      if it uses filemap_fault() then generic_file_remap_pages() can be used.
      
      Now device drivers can implement this method and obtain nonlinear vma support.
      Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@openvz.org>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Carsten Otte <cotte@de.ibm.com>
      Cc: Chris Metcalf <cmetcalf@tilera.com>	#arch/tile
      Cc: Cyrill Gorcunov <gorcunov@openvz.org>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: James Morris <james.l.morris@oracle.com>
      Cc: Jason Baron <jbaron@redhat.com>
      Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
      Cc: Matt Helsley <matthltc@us.ibm.com>
      Cc: Nick Piggin <npiggin@kernel.dk>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Robert Richter <robert.richter@amd.com>
      Cc: Suresh Siddha <suresh.b.siddha@intel.com>
      Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
      Cc: Venkatesh Pallipadi <venki@google.com>
      Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0b173bc4
  9. 06 Aug, 2012 1 commit
    • Zach Brown's avatar
      fuse: verify all ioctl retry iov elements · fb6ccff6
      Zach Brown authored
      Commit 7572777e
      
       attempted to verify that
      the total iovec from the client doesn't overflow iov_length() but it
      only checked the first element.  The iovec could still overflow by
      starting with a small element.  The obvious fix is to check all the
      elements.
      
      The overflow case doesn't look dangerous to the kernel as the copy is
      limited by the length after the overflow.  This fix restores the
      intention of returning an error instead of successfully copying less
      than the iovec represented.
      
      I found this by code inspection.  I built it but don't have a test case.
      I'm cc:ing stable because the initial commit did as well.
      Signed-off-by: default avatarZach Brown <zab@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
      CC: <stable@vger.kernel.org>         [2.6.37+]
      fb6ccff6
  10. 31 Jul, 2012 1 commit
  11. 18 Jul, 2012 1 commit
    • Brian Foster's avatar
      fuse: update attributes on aio_read · a8894274
      Brian Foster authored
      
      
      A fuse-based network filesystem might allow for the inode
      and/or file data to change unexpectedly. A local client
      that opens and repeatedly reads a file might never pick
      up on such changes and indefinitely return stale data.
      
      Always invoke fuse_update_attributes() in the read path
      to cause an attr revalidation when the attributes expire.
      This leads to a page cache invalidation if necessary and
      ensures fuse issues new read requests to the fuse client.
      
      The original logic (reval only on reads beyond EOF) is
      preserved unless the client specifies FUSE_AUTO_INVAL_DATA
      on init.
      Signed-off-by: default avatarBrian Foster <bfoster@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
      a8894274
  12. 01 Jun, 2012 1 commit
    • Josef Bacik's avatar
      fs: introduce inode operation ->update_time · c3b2da31
      Josef Bacik authored
      
      
      Btrfs has to make sure we have space to allocate new blocks in order to modify
      the inode, so updating time can fail.  We've gotten around this by having our
      own file_update_time but this is kind of a pain, and Christoph has indicated he
      would like to make xfs do something different with atime updates.  So introduce
      ->update_time, where we will deal with i_version an a/m/c time updates and
      indicate which changes need to be made.  The normal version just does what it
      has always done, updates the time and marks the inode dirty, and then
      filesystems can choose to do something different.
      
      I've gone through all of the users of file_update_time and made them check for
      errors with the exception of the fault code since it's complicated and I wasn't
      quite sure what to do there, also Jan is going to be pushing the file time
      updates into page_mkwrite for those who have it so that should satisfy btrfs and
      make it not a big deal to check the file_update_time() return code in the
      generic fault path. Thanks,
      Signed-off-by: default avatarJosef Bacik <josef@redhat.com>
      c3b2da31
  13. 26 Apr, 2012 1 commit
  14. 25 Apr, 2012 1 commit
  15. 20 Mar, 2012 1 commit
  16. 05 Mar, 2012 1 commit
    • Anand Avati's avatar
      fuse: O_DIRECT support for files · 4273b793
      Anand Avati authored
      
      
      Implement ->direct_IO() method in aops. The ->direct_IO() method combines
      the existing fuse_direct_read/fuse_direct_write methods to implement
      O_DIRECT functionality.
      
      Reaching ->direct_IO() in the read path via generic_file_aio_read ensures
      proper synchronization with page cache with its existing framework.
      
      Reaching ->direct_IO() in the write path via fuse_file_aio_write is made
      to come via generic_file_direct_write() which makes it play nice with
      the page cache w.r.t other mmap pages etc.
      
      On files marked 'direct_io' by the filesystem server, IO always follows
      the fuse_direct_read/write path. There is no effect of fcntl(O_DIRECT)
      and it always succeeds.
      
      On files not marked with 'direct_io' by the filesystem server, the IO
      path depends on O_DIRECT flag by the application. This can be passed
      at the time of open() as well as via fcntl().
      
      Note that asynchronous O_DIRECT iocb jobs are completed synchronously
      always (this has been the case with FUSE even before this patch)
      Signed-off-by: default avatarAnand Avati <avati@redhat.com>
      Reviewed-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
      4273b793
  17. 13 Dec, 2011 5 commits
  18. 08 Aug, 2011 3 commits
    • Johannes Weiner's avatar
      fuse: mark pages accessed when written to · 478e0841
      Johannes Weiner authored
      As fuse does not use the page cache library functions when userspace
      writes to a file, it did not benefit from 'c8236db9
      
       mm: mark page
      accessed before we write_end()' that made sure pages are properly
      marked accessed when written to.
      Signed-off-by: default avatarJohannes Weiner <jweiner@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
      478e0841
    • Johannes Weiner's avatar
      fuse: delete dead .write_begin and .write_end aops · b40cdd56
      Johannes Weiner authored
      Ever since 'ea9b9907
      
       fuse: implement perform_write', the .write_begin
      and .write_end aops have been dead code.
      
      Their task - acquiring a page from the page cache, sending out a write
      request and releasing the page again - is now done batch-wise to
      maximize the number of pages send per userspace request.
      Signed-off-by: default avatarJohannes Weiner <jweiner@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
      b40cdd56
    • Miklos Szeredi's avatar
      fuse: fix flock · 37fb3a30
      Miklos Szeredi authored
      Commit a9ff4f87
      
       "fuse: support BSD locking semantics" overlooked a
      number of issues with supporing flock locks over existing POSIX
      locking infrastructure:
      
        - it's not backward compatible, passing flock(2) calls to userspace
          unconditionally (if userspace sets FUSE_POSIX_LOCKS)
      
        - it doesn't cater for the fact that flock locks are automatically
          unlocked on file release
      
        - it doesn't take into account the fact that flock exclusive locks
          (write locks) don't need an fd opened for write.
      
      The last one invalidates the original premise of the patch that flock
      locks can be emulated with POSIX locks.
      
      This patch fixes the first two issues.  The last one needs to be fixed
      in userspace if the filesystem assumed that a write lock will happen
      only on a file operned for write (as in the case of the current fuse
      library).
      Reported-by: default avatarSebastian Pipping <webmaster@hartwork.org>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
      37fb3a30
  19. 21 Jul, 2011 3 commits
  20. 31 Mar, 2011 1 commit
  21. 21 Mar, 2011 1 commit