| commit | a7d2c573ae7fad1b2c877d1a1342fa5bb0d6478c | |
| author | Michel Lespinasse <walken@google.com> | |
| Tue, 7 May 2013 13:45:56 +0000 (7 06:45 -0700) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Tue, 7 May 2013 14:20:16 +0000 (7 07:20 -0700) | ||
| tree | 1494f94f71a299d32a3584565a538e5ffdef1163 | treesnapshot (tar.gz zip) |
| parent | 5ede972df1cd9294c82e9515949fd2103be81d7b | commitdiff |
rwsem: avoid taking wait_lock in rwsem_down_write_failed
In rwsem_down_write_failed(), if there are active locks after we wake up
(i.e. the lock got stolen from us), skip taking the wait_lock and go
back to sleep immediately.
Signed-off-by: Michel Lespinasse <walken@google.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In rwsem_down_write_failed(), if there are active locks after we wake up
(i.e. the lock got stolen from us), skip taking the wait_lock and go
back to sleep immediately.
Signed-off-by: Michel Lespinasse <walken@google.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| lib/rwsem.c | diffblobblamehistory |