tree 5e21539eba3903ddfee00729e38d5a006f2f2005
parent 386cb7cdeeef97e0bf082a8d6bbfc07a2ccce07b
author Mike Snitzer <snitzer@redhat.com> 1437096370 -0400
committer Mike Snitzer <snitzer@redhat.com> 1437100327 -0400

dm cache: avoid preallocation if no work in writeback_some_dirty_blocks()

Refactor writeback_some_dirty_blocks() to avoid prealloc_data_structs()
if the policy doesn't have any dirty blocks ready for writeback.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>