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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2019-02-18 17:09:17 +0300 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2019-02-22 09:42:13 +0000 |
| commit | 30d780f8fe98f4a417f505d5b7354ba5635bd193 (patch) | |
| tree | 988e985dc78232a47b42cb4a4fee63631fe4cb10 /block | |
| parent | b2589d66b40ed0595d5b4c16827324d0f98c5106 (diff) | |
| download | qemu-30d780f8fe98f4a417f505d5b7354ba5635bd193.zip qemu-30d780f8fe98f4a417f505d5b7354ba5635bd193.tar.gz qemu-30d780f8fe98f4a417f505d5b7354ba5635bd193.tar.bz2 | |
block/qcow: use qemu_iovec_init_buf
Use new qemu_iovec_init_buf() instead of
qemu_iovec_init_external( ... , 1), which simplifies the code.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190218140926.333779-9-vsementsov@virtuozzo.com
Message-Id: <20190218140926.333779-9-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/qcow.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/block/qcow.c b/block/qcow.c index 0a235bf..409c700 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -628,7 +628,6 @@ static coroutine_fn int qcow_co_preadv(BlockDriverState *bs, uint64_t offset, int offset_in_cluster; int ret = 0, n; uint64_t cluster_offset; - struct iovec hd_iov; QEMUIOVector hd_qiov; uint8_t *buf; void *orig_buf; @@ -661,9 +660,7 @@ static coroutine_fn int qcow_co_preadv(BlockDriverState *bs, uint64_t offset, if (!cluster_offset) { if (bs->backing) { /* read from the base image */ - hd_iov.iov_base = (void *)buf; - hd_iov.iov_len = n; - qemu_iovec_init_external(&hd_qiov, &hd_iov, 1); + qemu_iovec_init_buf(&hd_qiov, buf, n); qemu_co_mutex_unlock(&s->lock); /* qcow2 emits this on bs->file instead of bs->backing */ BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); @@ -688,9 +685,7 @@ static coroutine_fn int qcow_co_preadv(BlockDriverState *bs, uint64_t offset, ret = -EIO; break; } - hd_iov.iov_base = (void *)buf; - hd_iov.iov_len = n; - qemu_iovec_init_external(&hd_qiov, &hd_iov, 1); + qemu_iovec_init_buf(&hd_qiov, buf, n); qemu_co_mutex_unlock(&s->lock); BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO); ret = bdrv_co_preadv(bs->file, cluster_offset + offset_in_cluster, @@ -733,7 +728,6 @@ static coroutine_fn int qcow_co_pwritev(BlockDriverState *bs, uint64_t offset, int offset_in_cluster; uint64_t cluster_offset; int ret = 0, n; - struct iovec hd_iov; QEMUIOVector hd_qiov; uint8_t *buf; void *orig_buf; @@ -779,9 +773,7 @@ static coroutine_fn int qcow_co_pwritev(BlockDriverState *bs, uint64_t offset, } } - hd_iov.iov_base = (void *)buf; - hd_iov.iov_len = n; - qemu_iovec_init_external(&hd_qiov, &hd_iov, 1); + qemu_iovec_init_buf(&hd_qiov, buf, n); qemu_co_mutex_unlock(&s->lock); BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO); ret = bdrv_co_pwritev(bs->file, cluster_offset + offset_in_cluster, @@ -1062,7 +1054,6 @@ qcow_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset, { BDRVQcowState *s = bs->opaque; QEMUIOVector hd_qiov; - struct iovec iov; z_stream strm; int ret, out_len; uint8_t *buf, *out_buf; @@ -1128,11 +1119,7 @@ qcow_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset, } cluster_offset &= s->cluster_offset_mask; - iov = (struct iovec) { - .iov_base = out_buf, - .iov_len = out_len, - }; - qemu_iovec_init_external(&hd_qiov, &iov, 1); + qemu_iovec_init_buf(&hd_qiov, out_buf, out_len); BLKDBG_EVENT(bs->file, BLKDBG_WRITE_COMPRESSED); ret = bdrv_co_pwritev(bs->file, cluster_offset, out_len, &hd_qiov, 0); if (ret < 0) { |