1. 22 May, 2013 2 commits
    • Lukas Czerner's avatar
      jbd2: change jbd2_journal_invalidatepage to accept length · 259709b0
      Lukas Czerner authored
      invalidatepage now accepts range to invalidate and there are two file
      system using jbd2 also implementing punch hole feature which can benefit
      from this. We need to implement the same thing for jbd2 layer in order to
      allow those file system take benefit of this functionality.
      
      This commit adds length argument to the jbd2_journal_invalidatepage()
      and updates all instances in ext4 and ocfs2.
      Signed-off-by: default avatarLukas Czerner <lczerner@redhat.com>
      Reviewed-by: default avatarJan Kara <jack@suse.cz>
      259709b0
    • Lukas Czerner's avatar
      mm: change invalidatepage prototype to accept length · d47992f8
      Lukas Czerner authored
      Currently there is no way to truncate partial page where the end
      truncate point is not at the end of the page. This is because it was not
      needed and the functionality was enough for file system truncate
      operation to work properly. However more file systems now support punch
      hole feature and it can benefit from mm supporting truncating page just
      up to the certain point.
      
      Specifically, with this functionality truncate_inode_pages_range() can
      be changed so it supports truncating partial page at the end of the
      range (currently it will BUG_ON() if 'end' is not at the end of the
      page).
      
      This commit changes the invalidatepage() address space operation
      prototype to accept range to be invalidated and update all the instances
      for it.
      
      We also change the block_invalidatepage() in the same way and actually
      make a use of the new length argument implementing range invalidation.
      
      Actual file system implementations will follow except the file systems
      where the changes are really simple and should not change the behaviour
      in any way .Implementation for truncate_page_range() which will be able
      to accept page unaligned ranges will follow as well.
      Signed-off-by: default avatarLukas Czerner <lczerner@redhat.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Hugh Dickins <hughd@google.com>
      d47992f8
  2. 20 May, 2013 10 commits
  3. 19 May, 2013 3 commits
  4. 18 May, 2013 25 commits