mirror of https://github.com/proxmox/mirror_qemu
block-backend: remove qatomic_mb_read()
There is already a barrier in AIO_WAIT_WHILE_INTERNAL(), thus the qatomic_mb_read() is not adding anything. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>master
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72497cff89
commit
6a8a98a049
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@ -1845,7 +1845,7 @@ void blk_drain(BlockBackend *blk)
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/* We may have -ENOMEDIUM completions in flight */
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AIO_WAIT_WHILE(blk_get_aio_context(blk),
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qatomic_mb_read(&blk->in_flight) > 0);
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qatomic_read(&blk->in_flight) > 0);
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if (bs) {
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bdrv_drained_end(bs);
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@ -1867,7 +1867,7 @@ void blk_drain_all(void)
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aio_context_acquire(ctx);
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/* We may have -ENOMEDIUM completions in flight */
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AIO_WAIT_WHILE(ctx, qatomic_mb_read(&blk->in_flight) > 0);
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AIO_WAIT_WHILE(ctx, qatomic_read(&blk->in_flight) > 0);
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aio_context_release(ctx);
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}
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