From: Pavel Butsykin <[email protected]> Previously was added the assert:
commit 1755da16e32c15b22a521e8a38539e4b5cf367f3 Author: Paolo Bonzini <[email protected]> Date: Thu Oct 18 16:49:18 2012 +0200 block: introduce new dirty bitmap functionality Now the compressed write is always in coroutine and setting the bits is done after the write, so that we can return the dirty_bitmaps for the compressed writes. Signed-off-by: Pavel Butsykin <[email protected]> Reviewed-by: Stefan Hajnoczi <[email protected]> Signed-off-by: Denis V. Lunev <[email protected]> CC: Jeff Cody <[email protected]> CC: Markus Armbruster <[email protected]> CC: Eric Blake <[email protected]> CC: John Snow <[email protected]> CC: Stefan Hajnoczi <[email protected]> CC: Kevin Wolf <[email protected]> Signed-off-by: Kevin Wolf <[email protected]> --- block/io.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/block/io.c b/block/io.c index 0339911..fdf7080 100644 --- a/block/io.c +++ b/block/io.c @@ -896,7 +896,6 @@ bdrv_driver_pwritev_compressed(BlockDriverState *bs, uint64_t offset, return -ENOTSUP; } - assert(QLIST_EMPTY(&bs->dirty_bitmaps)); return drv->bdrv_co_pwritev_compressed(bs, offset, bytes, qiov); } @@ -1318,6 +1317,8 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs, } else if (flags & BDRV_REQ_ZERO_WRITE) { bdrv_debug_event(bs, BLKDBG_PWRITEV_ZERO); ret = bdrv_co_do_pwrite_zeroes(bs, offset, bytes, flags); + } else if (flags & BDRV_REQ_WRITE_COMPRESSED) { + ret = bdrv_driver_pwritev_compressed(bs, offset, bytes, qiov); } else if (bytes <= max_transfer) { bdrv_debug_event(bs, BLKDBG_PWRITEV); ret = bdrv_driver_pwritev(bs, offset, bytes, qiov, flags); @@ -1569,14 +1570,9 @@ int coroutine_fn bdrv_co_pwritev(BdrvChild *child, bytes = ROUND_UP(bytes, align); } - if (flags & BDRV_REQ_WRITE_COMPRESSED) { - ret = bdrv_driver_pwritev_compressed( - bs, offset, bytes, use_local_qiov ? &local_qiov : qiov); - } else { - ret = bdrv_aligned_pwritev(bs, &req, offset, bytes, align, - use_local_qiov ? &local_qiov : qiov, - flags); - } + ret = bdrv_aligned_pwritev(bs, &req, offset, bytes, align, + use_local_qiov ? &local_qiov : qiov, + flags); fail: -- 1.8.3.1
