From e12c1fd9d680f6b1181ae13efefc416743bd80e5 Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Fri, 10 May 2013 14:37:17 +0100 Subject: 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 --- drivers/md/dm-cache-policy.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/md') diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h index 558bdfdabf5..33369ca9614 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); -- cgit v1.2.3-18-g5258