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(parent: 9ea61ca) | patch
dm bufio: don't take the lock in dm_bufio_shrink_count
authorMikulas Patocka <mpatocka@redhat.com>
Wed, 23 Nov 2016 21:52:01 +0000 (16:52 -0500)
committerMike Snitzer <snitzer@redhat.com>
Thu, 8 Dec 2016 19:13:04 +0000 (14:13 -0500)
commitd12067f428c037b4575aaeb2be00847fc214c24a
tree7998dcb07191152c9e5ce83d0e44eaece082f1e6tree | snapshot (tar.gz zip)
parent9ea61cac0b1ad0c09022f39fd97e9b99a2cfc2dccommit | diff
dm bufio: don't take the lock in dm_bufio_shrink_count

dm_bufio_shrink_count() is called from do_shrink_slab to find out how many
freeable objects are there. The reported value doesn't have to be precise,
so we don't need to take the dm-bufio lock.

Suggested-by: David Rientjes <rientjes@google.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-bufio.c diff | blob | blame | history