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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2018-07-09 19:37:17 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2018-07-10 13:04:25 +0200 |
| commit | 67b51fb998c697afb5d744066fcbde53e04fe941 (patch) | |
| tree | 96a80cba86332f47def26bdc5cb88f4cd87ca5d6 /block/qcow2.c | |
| parent | 999658a05e61a8d87b65827da665302bb44ce8c9 (diff) | |
| download | qemu-67b51fb998c697afb5d744066fcbde53e04fe941.zip qemu-67b51fb998c697afb5d744066fcbde53e04fe941.tar.gz qemu-67b51fb998c697afb5d744066fcbde53e04fe941.tar.bz2 | |
block: split flags in copy_range
Pass read flags and write flags separately. This is needed to handle
coming BDRV_REQ_NO_SERIALISING clearly in following patches.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 33b61b7..867ce02 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -3253,13 +3253,14 @@ static int coroutine_fn qcow2_co_copy_range_from(BlockDriverState *bs, BdrvChild *src, uint64_t src_offset, BdrvChild *dst, uint64_t dst_offset, - uint64_t bytes, BdrvRequestFlags flags) + uint64_t bytes, BdrvRequestFlags read_flags, + BdrvRequestFlags write_flags) { BDRVQcow2State *s = bs->opaque; int ret; unsigned int cur_bytes; /* number of bytes in current iteration */ BdrvChild *child = NULL; - BdrvRequestFlags cur_flags; + BdrvRequestFlags cur_write_flags; assert(!bs->encrypted); qemu_co_mutex_lock(&s->lock); @@ -3268,7 +3269,7 @@ qcow2_co_copy_range_from(BlockDriverState *bs, uint64_t copy_offset = 0; /* prepare next request */ cur_bytes = MIN(bytes, INT_MAX); - cur_flags = flags; + cur_write_flags = write_flags; ret = qcow2_get_cluster_offset(bs, src_offset, &cur_bytes, ©_offset); if (ret < 0) { @@ -3280,20 +3281,20 @@ qcow2_co_copy_range_from(BlockDriverState *bs, if (bs->backing && bs->backing->bs) { int64_t backing_length = bdrv_getlength(bs->backing->bs); if (src_offset >= backing_length) { - cur_flags |= BDRV_REQ_ZERO_WRITE; + cur_write_flags |= BDRV_REQ_ZERO_WRITE; } else { child = bs->backing; cur_bytes = MIN(cur_bytes, backing_length - src_offset); copy_offset = src_offset; } } else { - cur_flags |= BDRV_REQ_ZERO_WRITE; + cur_write_flags |= BDRV_REQ_ZERO_WRITE; } break; case QCOW2_CLUSTER_ZERO_PLAIN: case QCOW2_CLUSTER_ZERO_ALLOC: - cur_flags |= BDRV_REQ_ZERO_WRITE; + cur_write_flags |= BDRV_REQ_ZERO_WRITE; break; case QCOW2_CLUSTER_COMPRESSED: @@ -3317,7 +3318,7 @@ qcow2_co_copy_range_from(BlockDriverState *bs, ret = bdrv_co_copy_range_from(child, copy_offset, dst, dst_offset, - cur_bytes, cur_flags); + cur_bytes, read_flags, cur_write_flags); qemu_co_mutex_lock(&s->lock); if (ret < 0) { goto out; @@ -3338,7 +3339,8 @@ static int coroutine_fn qcow2_co_copy_range_to(BlockDriverState *bs, BdrvChild *src, uint64_t src_offset, BdrvChild *dst, uint64_t dst_offset, - uint64_t bytes, BdrvRequestFlags flags) + uint64_t bytes, BdrvRequestFlags read_flags, + BdrvRequestFlags write_flags) { BDRVQcow2State *s = bs->opaque; int offset_in_cluster; @@ -3382,7 +3384,7 @@ qcow2_co_copy_range_to(BlockDriverState *bs, ret = bdrv_co_copy_range_to(src, src_offset, bs->file, cluster_offset + offset_in_cluster, - cur_bytes, flags); + cur_bytes, read_flags, write_flags); qemu_co_mutex_lock(&s->lock); if (ret < 0) { goto fail; |