1. 10 Nov, 2014 4 commits
  2. 03 Jun, 2014 1 commit
  3. 01 Mar, 2013 3 commits
  4. 21 Dec, 2012 1 commit
    • Joe Thornber's avatar
      dm thin: replace dm_cell_release_singleton with cell_defer_except · b7ca9c92
      Joe Thornber authored
      
      
      Change existing users of the function dm_cell_release_singleton to share
      cell_defer_except instead, and then remove the now-unused function.
      
      Everywhere that calls dm_cell_release_singleton, the bio in question
      is the holder of the cell.
      
      If there are no non-holder entries in the cell then cell_defer_except
      behaves exactly like dm_cell_release_singleton.  Conversely, if there
      *are* non-holder entries then dm_cell_release_singleton must not be used
      because those entries would need to be deferred.
      
      Consequently, it is safe to replace use of dm_cell_release_singleton
      with cell_defer_except.
      
      This patch is a pre-requisite for "dm thin: fix race between
      simultaneous io and discards to same block".
      Signed-off-by: default avatarJoe Thornber <ejt@redhat.com>
      Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
      b7ca9c92
  5. 12 Oct, 2012 1 commit