diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2020-04-24 14:54:43 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-04-30 17:51:07 +0200 |
| commit | 1ddaabaecb7eaeb6d8948a32340af95db44c54a1 (patch) | |
| tree | 5f782ff0a2e0ef06286aafb5ca471600dac9265a /block | |
| parent | f01643fb8b47e8a70c04bbf45e0f12a9e5bc54de (diff) | |
| download | qemu-1ddaabaecb7eaeb6d8948a32340af95db44c54a1.zip | |
raw-format: Support BDRV_REQ_ZERO_WRITE for truncate
The raw format driver can simply forward the flag and let its bs->file
child take care of actually providing the zeros.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200424125448.63318-6-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/raw-format.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/raw-format.c b/block/raw-format.c index 3465c9a865..351f2d91c6 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -387,7 +387,7 @@ static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset, s->size = offset; offset += s->offset; - return bdrv_co_truncate(bs->file, offset, exact, prealloc, 0, errp); + return bdrv_co_truncate(bs->file, offset, exact, prealloc, flags, errp); } static void raw_eject(BlockDriverState *bs, bool eject_flag) @@ -445,6 +445,8 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED | ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) & bs->file->bs->supported_zero_flags); + bs->supported_truncate_flags = bs->file->bs->supported_truncate_flags & + BDRV_REQ_ZERO_WRITE; if (bs->probed && !bdrv_is_read_only(bs)) { bdrv_refresh_filename(bs->file->bs); |