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| author | Kevin Wolf <kwolf@redhat.com> | 2016-03-10 13:46:04 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-03-30 12:16:02 +0200 |
| commit | 5481531154cf08ed53623a0184f7677a9b98d083 (patch) | |
| tree | 09292836a69813beeed0ee21bbb6cda05fe63303 /block | |
| parent | 2b556518c3424caa4f40ee4f6199e8877488f5e8 (diff) | |
| download | qemu-5481531154cf08ed53623a0184f7677a9b98d083.zip qemu-5481531154cf08ed53623a0184f7677a9b98d083.tar.gz qemu-5481531154cf08ed53623a0184f7677a9b98d083.tar.bz2 | |
raw: Support BDRV_REQ_FUA
Pass through the FUA flag to the lower layer so that the separate flush
can be saved in practically relevant cases where a (raw) format driver
sits on top of the protocol driver.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/raw_bsd.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/block/raw_bsd.c b/block/raw_bsd.c index 41dddf8..a6cc7e9 100644 --- a/block/raw_bsd.c +++ b/block/raw_bsd.c @@ -57,8 +57,9 @@ static int coroutine_fn raw_co_readv(BlockDriverState *bs, int64_t sector_num, return bdrv_co_readv(bs->file->bs, sector_num, nb_sectors, qiov); } -static int coroutine_fn raw_co_writev(BlockDriverState *bs, int64_t sector_num, - int nb_sectors, QEMUIOVector *qiov) +static int coroutine_fn +raw_co_writev_flags(BlockDriverState *bs, int64_t sector_num, int nb_sectors, + QEMUIOVector *qiov, int flags) { void *buf = NULL; BlockDriver *drv; @@ -104,7 +105,8 @@ static int coroutine_fn raw_co_writev(BlockDriverState *bs, int64_t sector_num, } BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO); - ret = bdrv_co_writev(bs->file->bs, sector_num, nb_sectors, qiov); + ret = bdrv_co_do_pwritev(bs->file->bs, sector_num * BDRV_SECTOR_SIZE, + nb_sectors * BDRV_SECTOR_SIZE, qiov, flags); fail: if (qiov == &local_qiov) { @@ -114,6 +116,13 @@ fail: return ret; } +static int coroutine_fn +raw_co_writev(BlockDriverState *bs, int64_t sector_num, int nb_sectors, + QEMUIOVector *qiov) +{ + return raw_co_writev_flags(bs, sector_num, nb_sectors, qiov, 0); +} + static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors, int *pnum, @@ -248,6 +257,8 @@ BlockDriver bdrv_raw = { .bdrv_create = &raw_create, .bdrv_co_readv = &raw_co_readv, .bdrv_co_writev = &raw_co_writev, + .bdrv_co_writev_flags = &raw_co_writev_flags, + .supported_write_flags = BDRV_REQ_FUA, .bdrv_co_write_zeroes = &raw_co_write_zeroes, .bdrv_co_discard = &raw_co_discard, .bdrv_co_get_block_status = &raw_co_get_block_status, |