| commit | 0685a2565a8b5da7288d2107f993dba43e83efd8 | [log] [tgz] |
|---|---|---|
| author | Mikulas Patocka <mpatocka@redhat.com> | Thu Nov 23 16:15:43 2017 -0500 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Nov 06 12:17:59 2019 +0100 |
| tree | 7c5884983b9fc5bcc0612fc1f025576b908b7675 | |
| parent | 9e48f0c28dd505e39bd136ec92a042b311b127c6 [diff] |
dm snapshot: use mutex instead of rw_semaphore [ Upstream commit ae1093be5a0ef997833e200a0dafb9ed0b1ff4fe ] The rw_semaphore is acquired for read only in two places, neither is performance-critical. So replace it with a mutex -- which is more efficient. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>