Commit 0df89e8e authored by Kevin Wolf's avatar Kevin Wolf
Browse files

block-backend: Expose bdrv_write_zeroes() 



Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
Reviewed-by: default avatarMax Reitz <mreitz@redhat.com>
parent a0710f79

block/block-backend.c

+11 −0
Original line number Diff line number Diff line
@@ -515,6 +515,17 @@ int blk_write(BlockBackend *blk, int64_t sector_num, const uint8_t *buf, 
    return bdrv_write(blk->bs, sector_num, buf, nb_sectors);

}



int blk_write_zeroes(BlockBackend *blk, int64_t sector_num,

                     int nb_sectors, BdrvRequestFlags flags)

{

    int ret = blk_check_request(blk, sector_num, nb_sectors);

    if (ret < 0) {

        return ret;

    }



    return bdrv_write_zeroes(blk->bs, sector_num, nb_sectors, flags);

}



static void error_callback_bh(void *opaque)

{

    struct BlockBackendAIOCB *acb = opaque;

include/sysemu/block-backend.h

+2 −0
Original line number Diff line number Diff line
@@ -87,6 +87,8 @@ int blk_read_unthrottled(BlockBackend *blk, int64_t sector_num, uint8_t *buf, 
                         int nb_sectors);

int blk_write(BlockBackend *blk, int64_t sector_num, const uint8_t *buf,

              int nb_sectors);

int blk_write_zeroes(BlockBackend *blk, int64_t sector_num,

                     int nb_sectors, BdrvRequestFlags flags);

BlockAIOCB *blk_aio_write_zeroes(BlockBackend *blk, int64_t sector_num,

                                 int nb_sectors, BdrvRequestFlags flags,

                                 BlockCompletionFunc *cb, void *opaque);