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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-06-29 22:59:32 +0300
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-08-17 18:08:57 +0300
commite0892e086aae8d86e33dc8fb87f3d36c901df574 (patch)
tree6a480513ccaa1bb3e2427bddf8f452994bc3d901 /drivers/ata/libata-eh.c
parent8083f29349372d5b949dc022ae9a981edc89ac41 (diff)
downloadlinux-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