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| author | Alasdair G Kergon <agk@redhat.com> | 2013-05-10 14:37:17 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2013-05-10 14:37:17 +0100 |
| commit | e12c1fd9d680f6b1181ae13efefc416743bd80e5 (patch) | |
| tree | bb86784049268de6af9c153bd23a3bf83c74f091 | |
| parent | 058ce5ca8155a4c8eeac9b9e8a70e6664996337b (diff) | |
dm cache policy: fix description of lookup fn
Correct the documented requirement on the return code from dm cache policy
lookup functions stated in the policy module header file.
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| -rw-r--r-- | drivers/md/dm-cache-policy.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h index 558bdfdabf5f..33369ca9614f 100644 --- a/drivers/md/dm-cache-policy.h +++ b/drivers/md/dm-cache-policy.h @@ -130,8 +130,8 @@ struct dm_cache_policy { * * Must not block. * - * Returns 1 iff in cache, 0 iff not, < 0 on error (-EWOULDBLOCK - * would be typical). + * Returns 0 if in cache, -ENOENT if not, < 0 for other errors + * (-EWOULDBLOCK would be typical). */ int (*lookup)(struct dm_cache_policy *p, dm_oblock_t oblock, dm_cblock_t *cblock); |