diff options
| author | Michel Lespinasse <[email protected]> | 2013-05-07 06:45:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2013-05-07 07:20:16 -0700 |
| commit | 9b0fc9c09f1b262b7fe697eba6b05095d78850e5 (patch) | |
| tree | 5fb25ae32c9aed77f604858a77a27cd4b37bbfc6 /lib/mpi/mpi-bit.c | |
| parent | a7d2c573ae7fad1b2c877d1a1342fa5bb0d6478c (diff) | |
rwsem: skip initial trylock in rwsem_down_write_failed
We can skip the initial trylock in rwsem_down_write_failed() if there
are known active lockers already, thus saving one likely-to-fail
cmpxchg.
Signed-off-by: Michel Lespinasse <[email protected]>
Reviewed-by: Peter Hurley <[email protected]>
Acked-by: Davidlohr Bueso <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-bit.c')
0 files changed, 0 insertions, 0 deletions