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block: Add return value for bdrv_flush_all()

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bdrv_flush() can fail, and bdrv_flush_all() should return an error as
well if this happens for a block device. It returns the first error
return now, but still at least tries to flush the remaining devices even
in error cases.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2013-07-05 13:48:01 +02:00
parent 7a370406bd
commit f0f0fdfeec
2 changed files with 9 additions and 3 deletions
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2
include/block/block.h
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@ -267,7 +267,7 @@ void bdrv_clear_incoming_migration_all(void);
/* Ensure contents are flushed to disk. */
int bdrv_flush(BlockDriverState *bs);
int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
void bdrv_flush_all(void);
int bdrv_flush_all(void);
void bdrv_close_all(void);
void bdrv_drain_all(void);