diff options
Diffstat (limited to 'block/copy-on-read.c')
| -rw-r--r-- | block/copy-on-read.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/block/copy-on-read.c b/block/copy-on-read.c index 823ec751c4..6a97208888 100644 --- a/block/copy-on-read.c +++ b/block/copy-on-read.c @@ -33,11 +33,13 @@ static int cor_open(BlockDriverState *bs, QDict *options, int flags, return -EINVAL; } - bs->supported_write_flags = BDRV_REQ_FUA & - bs->file->bs->supported_write_flags; + bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED | + (BDRV_REQ_FUA & + bs->file->bs->supported_write_flags); - bs->supported_zero_flags = (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) & - bs->file->bs->supported_zero_flags; + bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED | + ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) & + bs->file->bs->supported_zero_flags); return 0; } |