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block: invoke .bdrv_drain callback in coroutine context and from AioContext

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This will let the callback take a CoMutex in the next patch.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-8-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-06-29 15:27:45 +02:00 • committed by Fam Zheng
parent e7569c1829
commit 61124f03ab
3 changed files with 37 additions and 13 deletions
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6
block/qed.c
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@ -350,7 +350,7 @@ static void bdrv_qed_attach_aio_context(BlockDriverState *bs,
}
}
static void bdrv_qed_drain(BlockDriverState *bs)
static void coroutine_fn bdrv_qed_co_drain(BlockDriverState *bs)
{
BDRVQEDState *s = bs->opaque;
@ -359,7 +359,7 @@ static void bdrv_qed_drain(BlockDriverState *bs)
*/
if (s->need_check_timer && timer_pending(s->need_check_timer)) {
qed_cancel_need_check_timer(s);
qed_need_check_timer_cb(s);
qed_need_check_timer_entry(s);
}
}
@ -1548,7 +1548,7 @@ static BlockDriver bdrv_qed = {
.bdrv_check = bdrv_qed_check,
.bdrv_detach_aio_context = bdrv_qed_detach_aio_context,
.bdrv_attach_aio_context = bdrv_qed_attach_aio_context,
.bdrv_drain = bdrv_qed_drain,
.bdrv_co_drain = bdrv_qed_co_drain,
};
static void bdrv_qed_init(void)