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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2019-10-29 18:09:34 +0300 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2019-11-04 09:21:45 +0100 |
| commit | dcfbece68441bfbe6803de60ab5a8045196094b4 (patch) | |
| tree | 63dcde0cd0cd01c57caab4d6329dfb9a83e87386 /block | |
| parent | 407d22eb5b5f9eeb75e450ef52c84e202b170838 (diff) | |
| download | qemu-dcfbece68441bfbe6803de60ab5a8045196094b4.zip qemu-dcfbece68441bfbe6803de60ab5a8045196094b4.tar.gz qemu-dcfbece68441bfbe6803de60ab5a8045196094b4.tar.bz2 | |
block/block-copy: fix s->copy_size for compressed cluster
0e2402452f1f20429 allowed writes larger than cluster, but that's
unsupported for compressed write. Fix it.
Fixes: 0e2402452f1f20429
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20191029150934.26416-1-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/block-copy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/block-copy.c b/block/block-copy.c index c39cc9c..79798a1 100644 --- a/block/block-copy.c +++ b/block/block-copy.c @@ -109,9 +109,9 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target, s->use_copy_range = false; s->copy_size = cluster_size; } else if (write_flags & BDRV_REQ_WRITE_COMPRESSED) { - /* Compression is not supported for copy_range */ + /* Compression supports only cluster-size writes and no copy-range. */ s->use_copy_range = false; - s->copy_size = MAX(cluster_size, BLOCK_COPY_MAX_BUFFER); + s->copy_size = cluster_size; } else { /* * copy_range does not respect max_transfer (it's a TODO), so we factor |