Support the flag if the underlying BDS supports it Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com> Reviewed-by: Alberto Garcia <be...@igalia.com> --- block/blkdebug.c | 3 ++- block/blkverify.c | 2 +- block/mirror.c | 2 +- block/quorum.c | 3 ++- block/raw-format.c | 3 ++- 5 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/block/blkdebug.c b/block/blkdebug.c index 5897124..d46f6c9 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -400,7 +400,8 @@ static int blkdebug_open(BlockDriverState *bs, QDict *options, int flags, bs->supported_write_flags = BDRV_REQ_FUA & bs->file->bs->supported_write_flags; - bs->supported_zero_flags = (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) & + bs->supported_zero_flags = + (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) & bs->file->bs->supported_zero_flags; ret = -EINVAL; diff --git a/block/blkverify.c b/block/blkverify.c index de2fdc1..03bec62 100644 --- a/block/blkverify.c +++ b/block/blkverify.c @@ -146,7 +146,7 @@ static int blkverify_open(BlockDriverState *bs, QDict *options, int flags, s->test_file->bs->supported_write_flags; bs->supported_zero_flags = - (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) & + (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) & bs->file->bs->supported_zero_flags & s->test_file->bs->supported_zero_flags; diff --git a/block/mirror.c b/block/mirror.c index 2fb786f..58f006f 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -1105,7 +1105,7 @@ static void mirror_top_set_supported_flags(BlockDriverState *bs) bs->supported_write_flags = BDRV_REQ_FUA & bs->backing->bs->supported_write_flags; bs->supported_zero_flags = - (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) & + (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) & bs->backing->bs->supported_zero_flags; } diff --git a/block/quorum.c b/block/quorum.c index dc77a23..e369e79 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -873,7 +873,8 @@ static void quorum_set_supported_flags(BlockDriverState *bs) int i; bs->supported_write_flags = BDRV_REQ_FUA; - bs->supported_zero_flags = BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP; + bs->supported_zero_flags = + BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE; for (i = 0; i < s->num_children; i++) { bs->supported_write_flags &= s->children[i]->bs->supported_write_flags; diff --git a/block/raw-format.c b/block/raw-format.c index a378547..ca65f86 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -417,7 +417,8 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, bs->sg = bs->file->bs->sg; bs->supported_write_flags = BDRV_REQ_FUA & bs->file->bs->supported_write_flags; - bs->supported_zero_flags = (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) & + bs->supported_zero_flags = + (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) & bs->file->bs->supported_zero_flags; if (bs->probed && !bdrv_is_read_only(bs)) { -- 2.7.4