diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/coroutines.h | 10 | ||||
| -rw-r--r-- | block/io.c | 49 |
2 files changed, 14 insertions, 45 deletions
diff --git a/block/coroutines.h b/block/coroutines.h index c62b3a2697..6c63a819c9 100644 --- a/block/coroutines.h +++ b/block/coroutines.h @@ -31,12 +31,12 @@ int coroutine_fn bdrv_co_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); int coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, Error **errp); -int coroutine_fn -bdrv_co_prwv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov, - bool is_write, BdrvRequestFlags flags); int generated_co_wrapper -bdrv_prwv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov, - bool is_write, BdrvRequestFlags flags); +bdrv_preadv(BdrvChild *child, int64_t offset, unsigned int bytes, + QEMUIOVector *qiov, BdrvRequestFlags flags); +int generated_co_wrapper +bdrv_pwritev(BdrvChild *child, int64_t offset, unsigned int bytes, + QEMUIOVector *qiov, BdrvRequestFlags flags); int coroutine_fn bdrv_co_common_block_status_above(BlockDriverState *bs, diff --git a/block/io.c b/block/io.c index 2891303a8d..c3dc1db036 100644 --- a/block/io.c +++ b/block/io.c @@ -890,23 +890,11 @@ static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset, return 0; } -int coroutine_fn bdrv_co_prwv(BdrvChild *child, int64_t offset, - QEMUIOVector *qiov, bool is_write, - BdrvRequestFlags flags) -{ - if (is_write) { - return bdrv_co_pwritev(child, offset, qiov->size, qiov, flags); - } else { - return bdrv_co_preadv(child, offset, qiov->size, qiov, flags); - } -} - int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset, int bytes, BdrvRequestFlags flags) { - QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, NULL, bytes); - - return bdrv_prwv(child, offset, &qiov, true, BDRV_REQ_ZERO_WRITE | flags); + return bdrv_pwritev(child, offset, bytes, NULL, + BDRV_REQ_ZERO_WRITE | flags); } /* @@ -950,41 +938,19 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags) } } -/* return < 0 if error. See bdrv_pwrite() for the return codes */ -int bdrv_preadv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov) -{ - int ret; - - ret = bdrv_prwv(child, offset, qiov, false, 0); - if (ret < 0) { - return ret; - } - - return qiov->size; -} - /* See bdrv_pwrite() for the return codes */ int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int bytes) { + int ret; QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); if (bytes < 0) { return -EINVAL; } - return bdrv_preadv(child, offset, &qiov); -} - -int bdrv_pwritev(BdrvChild *child, int64_t offset, QEMUIOVector *qiov) -{ - int ret; + ret = bdrv_preadv(child, offset, bytes, &qiov, 0); - ret = bdrv_prwv(child, offset, qiov, true, 0); - if (ret < 0) { - return ret; - } - - return qiov->size; + return ret < 0 ? ret : bytes; } /* Return no. of bytes on success or < 0 on error. Important errors are: @@ -995,13 +961,16 @@ int bdrv_pwritev(BdrvChild *child, int64_t offset, QEMUIOVector *qiov) */ int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, int bytes) { + int ret; QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); if (bytes < 0) { return -EINVAL; } - return bdrv_pwritev(child, offset, &qiov); + ret = bdrv_pwritev(child, offset, bytes, &qiov, 0); + + return ret < 0 ? ret : bytes; } /* |