From 5481531154cf08ed53623a0184f7677a9b98d083 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 10 Mar 2016 13:46:04 +0100 Subject: [PATCH] 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 Reviewed-by: Max Reitz --- block/raw_bsd.c | 17 ++++++++++++++--- 1 file 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, -- 2.7.4