| commit | 668128e90b9596668141539326178dacc42af188 | [log] [tgz] |
|---|---|---|
| author | NeilBrown <neilb@suse.de> | Fri Aug 08 14:19:54 2014 -0700 |
| committer | Linus Torvalds <torvalds@linux-foundation.org> | Fri Aug 08 15:57:19 2014 -0700 |
| tree | d68268b71a156f2ed76999384e46d3dc36236975 | |
| parent | c312442fe3ce9561137910db35ad1409d67dbac6 [diff] |
autofs4: don't take spinlock when not needed in autofs4_lookup_expiring If the expiring_list is empty, we can avoid a costly spinlock in the rcu-walk path through autofs4_d_manage (once the rest of the path becomes rcu-walk friendly). Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>