diff options
Diffstat (limited to 'include/block/block.h')
| -rw-r--r-- | include/block/block.h | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/include/block/block.h b/include/block/block.h index 24ef816..19b3ab9 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -27,17 +27,6 @@ typedef struct BlockDriverInfo { */ bool unallocated_blocks_are_zero; /* - * True if the driver can optimize writing zeroes by unmapping - * sectors. This is equivalent to the BLKDISCARDZEROES ioctl in Linux - * with the difference that in qemu a discard is allowed to silently - * fail. Therefore we have to use bdrv_pwrite_zeroes with the - * BDRV_REQ_MAY_UNMAP flag for an optimized zero write with unmapping. - * After this call the driver has to guarantee that the contents read - * back as zero. It is additionally required that the block device is - * opened with BDRV_O_UNMAP flag for this to work. - */ - bool can_write_zeroes_with_unmap; - /* * True if this block driver only supports compressed writes */ bool needs_compressed_writes; |