Some block devices need an explicit callback for flushing written
blocks. Add this callback.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
common/block.c | 3 +++
include/block.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/common/block.c b/common/block.c
index e522ee4..0edc861 100644
--- a/common/block.c
+++ b/common/block.c
@@ -55,6 +55,9 @@ static int writebuffer_flush(struct block_device *blk)
}
}
+ if (blk->ops->flush)
+ return blk->ops->flush(blk);
+
return 0;
}
diff --git a/include/block.h b/include/block.h
index 872a4c1..9137767 100644
--- a/include/block.h
+++ b/include/block.h
@@ -9,6 +9,7 @@ struct block_device;
struct block_device_ops {
int (*read)(struct block_device *, void *buf, int block, int num_blocks);
int (*write)(struct block_device *, const void *buf, int block, int num_blocks);
+ int (*flush)(struct block_device *);
};
struct chunk;
--
2.0.0
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