1. 22 Dec, 2006 36 commits
  2. 21 Dec, 2006 4 commits
    • Jens Axboe's avatar
      [PATCH] elevator: fixup typo in merge logic · bb4067e3
      Jens Axboe authored
      The recent io scheduler allow_merge commit left the block layer with
      no merging, oops. This patch fixes that up.
      
      That means the CFQ change needs to be verified again, it might not fix
      the original bug now.  But that's a seperate thing, I'll double check
      that tomorrow.
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      bb4067e3
    • Andrew Morton's avatar
      [PATCH] truncate: clear page dirtiness before running try_to_free_buffers() · 3e67c098
      Andrew Morton authored
      truncate presently invalidates the dirty page's buffer_heads then shoots down
      the page.  But try_to_free_buffers() will now bale out because the page is
      dirty.
      
      Net effect: the LRU gets filled with dirty pages which have invalidated
      buffer_heads attached.  They have no ->mapping and hence cannot be cleaned.
      The machine leaks memory at an enormous rate.
      
      Fix this by cleaning the page before running try_to_free_buffers(), so
      try_to_free_buffers() can do its work.
      
      Also, remember to do dirty-page-acoounting in cancel_dirty_page() so the
      machine won't wedge up trying to write non-existent dirty pages.
      
      Probably still wrong, but now less so.
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      3e67c098
    • David Chinner's avatar
      [PATCH] Fix XFS after clear_page_dirty() removal · 92132021
      David Chinner authored
      XFS appears to call clear_page_dirty to get the mapping tree dirty tag
      set correctly at the same time the page dirty flag is cleared.  I note
      that this can be done by set_page_writeback() if we clear the dirty flag
      on the page first when we are writing back the entire page.
      
      Hence it seems to me that the XFS call to clear_page_dirty() could
      easily be substituted by clear_page_dirty_for_io() followed by a call to
      set_page_writeback() to get the mapping tree tags set correctly after
      the page has been marked clean.
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      92132021
    • Miklos Szeredi's avatar
      [PATCH] fuse: remove clear_page_dirty() call · 9280f682
      Miklos Szeredi authored
      The use by FUSE was just a remnant of an optimization from the time
      when writable mappings were supported.
      
      Now FUSE never actually allows the creation of dirty pages, so this
      invocation of clear_page_dirty() is effectively a no-op.
      Signed-off-by: default avatarMiklos Szeredi <miklos@szeredi.hu>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      9280f682