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libceph: allow ceph_buffer_put() to receive a NULL ceph_buffer

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[ Upstream commit 5c498950f730aa17c5f8a2cdcb903524e4002ed2 ]

Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Luis Henriques 2019-07-19 15:32:19 +01:00 committed by Greg Kroah-Hartman
parent 9fb47e7dea
commit 2aeaba9025
1 changed files with 2 additions and 1 deletions
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3
include/linux/ceph/buffer.h
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@ -30,7 +30,8 @@ static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
static inline void ceph_buffer_put(struct ceph_buffer *b)
{
kref_put(&b->kref, ceph_buffer_release);
if (b)
kref_put(&b->kref, ceph_buffer_release);
}
extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);