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author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-29 22:59:32 +0300 |
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committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-08-17 18:08:57 +0300 |
commit | e0892e086aae8d86e33dc8fb87f3d36c901df574 (patch) | |
tree | 6a480513ccaa1bb3e2427bddf8f452994bc3d901 /drivers/ata/libata-eh.c | |
parent | 8083f29349372d5b949dc022ae9a981edc89ac41 (diff) | |
download | linux-e0892e086aae8d86e33dc8fb87f3d36c901df574.tar.xz |
ipc: Replace spin_unlock_wait() with lock/unlock pair
There is no agreed-upon definition of spin_unlock_wait()'s semantics,
and it appears that all callers could do just as well with a lock/unlock
pair. This commit therefore replaces the spin_unlock_wait() call in
exit_sem() with spin_lock() followed immediately by spin_unlock().
This should be safe from a performance perspective because exit_sem()
is rarely invoked in production.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Diffstat (limited to 'drivers/ata/libata-eh.c')
0 files changed, 0 insertions, 0 deletions