diff options
Diffstat (limited to 'block/io.c')
| -rw-r--r-- | block/io.c | 45 |
1 files changed, 6 insertions, 39 deletions
diff --git a/block/io.c b/block/io.c index b3ea95c74f..ad877b0aeb 100644 --- a/block/io.c +++ b/block/io.c @@ -934,19 +934,6 @@ out: return ret; } -static inline uint64_t bdrv_get_align(BlockDriverState *bs) -{ - /* TODO Lift BDRV_SECTOR_SIZE restriction in BlockDriver interface */ - return MAX(BDRV_SECTOR_SIZE, bs->request_alignment); -} - -static inline bool bdrv_req_is_aligned(BlockDriverState *bs, - int64_t offset, size_t bytes) -{ - int64_t align = bdrv_get_align(bs); - return !(offset & (align - 1) || (bytes & (align - 1))); -} - /* * Handle a read request in coroutine context */ @@ -957,7 +944,8 @@ static int coroutine_fn bdrv_co_do_preadv(BlockDriverState *bs, BlockDriver *drv = bs->drv; BdrvTrackedRequest req; - uint64_t align = bdrv_get_align(bs); + /* TODO Lift BDRV_SECTOR_SIZE restriction in BlockDriver interface */ + uint64_t align = MAX(BDRV_SECTOR_SIZE, bs->request_alignment); uint8_t *head_buf = NULL; uint8_t *tail_buf = NULL; QEMUIOVector local_qiov; @@ -1199,7 +1187,8 @@ static int coroutine_fn bdrv_co_do_pwritev(BlockDriverState *bs, BdrvRequestFlags flags) { BdrvTrackedRequest req; - uint64_t align = bdrv_get_align(bs); + /* TODO Lift BDRV_SECTOR_SIZE restriction in BlockDriver interface */ + uint64_t align = MAX(BDRV_SECTOR_SIZE, bs->request_alignment); uint8_t *head_buf = NULL; uint8_t *tail_buf = NULL; QEMUIOVector local_qiov; @@ -1298,10 +1287,6 @@ static int coroutine_fn bdrv_co_do_pwritev(BlockDriverState *bs, bytes = ROUND_UP(bytes, align); } - if (use_local_qiov) { - /* Local buffer may have non-zero data. */ - flags &= ~BDRV_REQ_ZERO_WRITE; - } ret = bdrv_aligned_pwritev(bs, &req, offset, bytes, use_local_qiov ? &local_qiov : qiov, flags); @@ -1342,32 +1327,14 @@ int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, int nb_sectors, BdrvRequestFlags flags) { - int ret; - trace_bdrv_co_write_zeroes(bs, sector_num, nb_sectors, flags); if (!(bs->open_flags & BDRV_O_UNMAP)) { flags &= ~BDRV_REQ_MAY_UNMAP; } - if (bdrv_req_is_aligned(bs, sector_num << BDRV_SECTOR_BITS, - nb_sectors << BDRV_SECTOR_BITS)) { - ret = bdrv_co_do_writev(bs, sector_num, nb_sectors, NULL, - BDRV_REQ_ZERO_WRITE | flags); - } else { - uint8_t *buf; - QEMUIOVector local_qiov; - size_t bytes = nb_sectors << BDRV_SECTOR_BITS; - - buf = qemu_memalign(bdrv_opt_mem_align(bs), bytes); - memset(buf, 0, bytes); - qemu_iovec_init(&local_qiov, 1); - qemu_iovec_add(&local_qiov, buf, bytes); - ret = bdrv_co_do_writev(bs, sector_num, nb_sectors, &local_qiov, - BDRV_REQ_ZERO_WRITE | flags); - qemu_vfree(buf); - } - return ret; + return bdrv_co_do_writev(bs, sector_num, nb_sectors, NULL, + BDRV_REQ_ZERO_WRITE | flags); } int bdrv_flush_all(void) |