diff options
Diffstat (limited to 'block/file-posix.c')
| -rw-r--r-- | block/file-posix.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index 48cd096624..66fdb07820 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1295,7 +1295,7 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp) } #endif - if (bs->sg || S_ISBLK(st.st_mode)) { + if (bdrv_is_sg(bs) || S_ISBLK(st.st_mode)) { int ret = hdev_get_max_hw_transfer(s->fd, &st); if (ret > 0 && ret <= BDRV_REQUEST_MAX_BYTES) { @@ -2061,6 +2061,28 @@ static int coroutine_fn raw_thread_pool_submit(BlockDriverState *bs, return thread_pool_submit_co(pool, func, arg); } +/* + * Check if all memory in this vector is sector aligned. + */ +static bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov) +{ + int i; + size_t alignment = bdrv_min_mem_align(bs); + size_t len = bs->bl.request_alignment; + IO_CODE(); + + for (i = 0; i < qiov->niov; i++) { + if ((uintptr_t) qiov->iov[i].iov_base % alignment) { + return false; + } + if (qiov->iov[i].iov_len % len) { + return false; + } + } + + return true; +} + static int coroutine_fn raw_co_prw(BlockDriverState *bs, uint64_t offset, uint64_t bytes, QEMUIOVector *qiov, int type) { |