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block: access io_limits_disabled with atomic ops

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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170605123908.18777-4-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-06-05 14:38:52 +02:00 • committed by Fam Zheng
parent 414c2ec358
commit d993b85804
3 changed files with 5 additions and 4 deletions
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3
include/sysemu/block-backend.h
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@ -80,7 +80,8 @@ typedef struct BlockBackendPublic {
CoQueue throttled_reqs[2];
/* Nonzero if the I/O limits are currently being ignored; generally
* it is zero. */
* it is zero. Accessed with atomic operations.
*/
unsigned int io_limits_disabled;
/* The following fields are protected by the ThrottleGroup lock.