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block: do not parse BDRV_O_CACHE_WB in block drivers

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Block drivers should ignore BDRV_O_CACHE_WB in .bdrv_open flags,
and in the bs->open_flags.

This patch removes the code, leaving the behaviour behind as if
BDRV_O_CACHE_WB was set.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jeff Cody 2012-09-20 15:13:22 -04:00 • committed by Kevin Wolf
parent 6a8dc0422e
commit 39c9fb9565
5 changed files with 6 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

4
block/iscsi.c
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@ -268,10 +268,6 @@ iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num,
acb->task->xfer_dir = SCSI_XFER_WRITE;
acb->task->cdb_size = 16;
acb->task->cdb[0] = 0x8a;
if (!(bs->open_flags & BDRV_O_CACHE_WB)) {
/* set FUA on writes when cache mode is write through */
acb->task->cdb[1] |= 0x04;
}
lba = sector_qemu2lun(sector_num, iscsilun);
*(uint32_t *)&acb->task->cdb[2] = htonl(lba >> 32);
*(uint32_t *)&acb->task->cdb[6] = htonl(lba & 0xffffffff);