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block-backend: Introduce blk_drain()
This patch introduces the blk_drain() function which allows to replace blk_drain_all() when only one BlockDriverState needs to be drained. Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1434537440-28236-2-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -700,6 +700,11 @@ int blk_flush_all(void)
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return bdrv_flush_all();
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return bdrv_flush_all();
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}
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}
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void blk_drain(BlockBackend *blk)
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{
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bdrv_drain(blk->bs);
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}
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void blk_drain_all(void)
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void blk_drain_all(void)
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{
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{
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bdrv_drain_all();
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bdrv_drain_all();
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@ -118,6 +118,7 @@ int blk_co_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors);
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int blk_co_flush(BlockBackend *blk);
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int blk_co_flush(BlockBackend *blk);
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int blk_flush(BlockBackend *blk);
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int blk_flush(BlockBackend *blk);
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int blk_flush_all(void);
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int blk_flush_all(void);
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void blk_drain(BlockBackend *blk);
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void blk_drain_all(void);
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void blk_drain_all(void);
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BlockdevOnError blk_get_on_error(BlockBackend *blk, bool is_read);
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BlockdevOnError blk_get_on_error(BlockBackend *blk, bool is_read);
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BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read,
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BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read,
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