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(parent: 2482aee) | patch
aio-wait: switch to smp_mb__after_rmw()
authorPaolo Bonzini <pbonzini@redhat.com>
Fri, 3 Mar 2023 10:03:52 +0000 (11:03 +0100)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 7 Mar 2023 11:39:50 +0000 (12:39 +0100)
commitb532526a07ef3b903ead2e055fe6cc87b41057a3
tree34054b0a98fb09f532a0cb31494f4a20d85efbd1tree | snapshot
parent2482aeea4195ad84cf3d4e5b15b28ec5b420ed5acommit | diff
aio-wait: switch to smp_mb__after_rmw()

The barrier comes after an atomic increment, so it is enough to use
smp_mb__after_rmw(); this avoids a double barrier on x86 systems.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
include/block/aio-wait.h diff | blob | history
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