tree 4736ef966a154b8a96820a345db96bd6284c69a7
parent 6d0abeca3242a88cab8232e4acd7e2bf088f3bc2
author Mike Snitzer <snitzer@redhat.com> 1391195514 -0500
committer Mike Snitzer <snitzer@redhat.com> 1392652805 -0500

dm cache: move hook_info into common portion of per_bio_data structure

Commit c9d28d5d ("dm cache: promotion optimisation for writes")
incorrectly placed the 'hook_info' member in the writethrough-only
portion of the per_bio_data structure.

Given that the overwrite optimization may be used for writeback the
'hook_info' member must be placed above the 'cache' member of the
per_bio_data structure.  Any members above 'cache' are available from
both writeback and writethrough modes' per_bio_data structure.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Cc: stable@vger.kernel.org # 3.13+