diff options
| author | Jeff Cody <jcody@redhat.com> | 2012-09-20 15:13:22 -0400 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2012-09-24 15:15:11 +0200 |
| commit | 39c9fb9565613a5ca0ae6e83ea115585f91527bb (patch) | |
| tree | 572e7ad7f54225aef021c9fecf1a06365d615133 /block | |
| parent | 6a8dc0422e508fc85390e55cbca1b93cb242d22d (diff) | |
| download | qemu-39c9fb9565613a5ca0ae6e83ea115585f91527bb.tar.gz qemu-39c9fb9565613a5ca0ae6e83ea115585f91527bb.tar.bz2 qemu-39c9fb9565613a5ca0ae6e83ea115585f91527bb.zip | |
block: do not parse BDRV_O_CACHE_WB in block drivers
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>
Diffstat (limited to 'block')
| -rw-r--r-- | block/iscsi.c | 4 | ||||
| -rw-r--r-- | block/raw-posix.c | 3 | ||||
| -rw-r--r-- | block/raw-win32.c | 3 | ||||
| -rw-r--r-- | block/rbd.c | 6 | ||||
| -rw-r--r-- | block/sheepdog.c | 14 |
5 files changed, 6 insertions, 24 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 0b96165ec2..70cf700e53 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -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); diff --git a/block/raw-posix.c b/block/raw-posix.c index 155205f7ee..288e7ff238 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -202,9 +202,6 @@ static void raw_parse_flags(int bdrv_flags, int *open_flags) if ((bdrv_flags & BDRV_O_NOCACHE)) { *open_flags |= O_DIRECT; } - if (!(bdrv_flags & BDRV_O_CACHE_WB)) { - *open_flags |= O_DSYNC; - } } #ifdef CONFIG_LINUX_AIO diff --git a/block/raw-win32.c b/block/raw-win32.c index 335c06a101..78c830648b 100644 --- a/block/raw-win32.c +++ b/block/raw-win32.c @@ -92,9 +92,6 @@ static void raw_parse_flags(int flags, int *access_flags, DWORD *overlapped) if (flags & BDRV_O_NOCACHE) { *overlapped |= FILE_FLAG_NO_BUFFERING; } - if (!(flags & BDRV_O_CACHE_WB)) { - *overlapped |= FILE_FLAG_WRITE_THROUGH; - } } static int raw_open(BlockDriverState *bs, const char *filename, int flags) diff --git a/block/rbd.c b/block/rbd.c index 5a0f79fc8f..015a9db0ad 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -487,12 +487,6 @@ static int qemu_rbd_open(BlockDriverState *bs, const char *filename, int flags) rados_conf_set(s->cluster, "rbd_cache", "false"); } else { rados_conf_set(s->cluster, "rbd_cache", "true"); - if (!(flags & BDRV_O_CACHE_WB)) { - r = rados_conf_set(s->cluster, "rbd_cache_max_dirty", "0"); - if (r < 0) { - rados_conf_set(s->cluster, "rbd_cache", "false"); - } - } } if (strstr(conf, "conf=") == NULL) { diff --git a/block/sheepdog.c b/block/sheepdog.c index e0753ee9e5..4742f8ae6f 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -1114,14 +1114,12 @@ static int sd_open(BlockDriverState *bs, const char *filename, int flags) goto out; } - if (flags & BDRV_O_CACHE_WB) { - s->cache_enabled = 1; - s->flush_fd = connect_to_sdog(s->addr, s->port); - if (s->flush_fd < 0) { - error_report("failed to connect"); - ret = s->flush_fd; - goto out; - } + s->cache_enabled = 1; + s->flush_fd = connect_to_sdog(s->addr, s->port); + if (s->flush_fd < 0) { + error_report("failed to connect"); + ret = s->flush_fd; + goto out; } if (snapid || tag[0] != '\0') { |