diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2014-01-31 14:11:54 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2014-02-17 11:00:05 -0500 |
| commit | c6eda5e81c4fcc77185117255c7419eda771f67f (patch) | |
| tree | 4736ef966a154b8a96820a345db96bd6284c69a7 /drivers/md | |
| parent | 6d0abeca3242a88cab8232e4acd7e2bf088f3bc2 (diff) | |
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+
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-cache-target.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index ffd472e015c..14256b7fce7 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -289,6 +289,7 @@ struct per_bio_data { bool tick:1; unsigned req_nr:2; struct dm_deferred_entry *all_io_entry; + struct dm_hook_info hook_info; /* * writethrough fields. These MUST remain at the end of this @@ -297,7 +298,6 @@ struct per_bio_data { */ struct cache *cache; dm_cblock_t cblock; - struct dm_hook_info hook_info; struct dm_bio_details bio_details; }; |