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authorKevin Wolf <kwolf@redhat.com>2016-06-02 11:41:52 +0200
committerKevin Wolf <kwolf@redhat.com>2016-06-16 15:19:55 +0200
commit244483e64ee726cc89a1e05bed2be0ed37071403 (patch)
treea8b9eb61f5d4f2bcfb50f2ff3ee5af97c5d28307 /include
parent8c0dcbc4ad2bf4f9f3b27c637b357e87cad70ec7 (diff)
block: Byte-based bdrv_co_do_copy_on_readv()
In a first step to convert the common I/O path to work on bytes rather than sectors, this converts the copy-on-read logic that is used by bdrv_aligned_preadv(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/block/block.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/include/block/block.h b/include/block/block.h
index 8cabcddf6c..9c3a62cc0a 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -404,10 +404,14 @@ int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors);
int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs);
+void bdrv_round_sectors_to_clusters(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors,
+ int64_t *cluster_sector_num,
+ int *cluster_nb_sectors);
void bdrv_round_to_clusters(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors,
- int64_t *cluster_sector_num,
- int *cluster_nb_sectors);
+ int64_t offset, unsigned int bytes,
+ int64_t *cluster_offset,
+ unsigned int *cluster_bytes);
const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
void bdrv_get_backing_filename(BlockDriverState *bs,