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qcow2: Remove wrong metadata overlap check

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In qcow2_write_compressed, if the compression fails, a normal cluster is
written to disk. This is done through bdrv_write on the qcow2 BDS
itself (using the guest offset), thus it is wrong to do a metadata
overlap check before.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2013-10-09 14:41:28 +02:00 committed by Kevin Wolf
parent 9e3f08923a
commit f9bff97143
1 changed files with 0 additions and 8 deletions
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8
block/qcow2.c
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@ -1738,14 +1738,6 @@ static int qcow2_write_compressed(BlockDriverState *bs, int64_t sector_num,
if (ret != Z_STREAM_END || out_len >= s->cluster_size) { if (ret != Z_STREAM_END || out_len >= s->cluster_size) {
/* could not compress: write normal cluster */ /* could not compress: write normal cluster */
ret = qcow2_pre_write_overlap_check(bs, QCOW2_OL_DEFAULT,
sector_num * BDRV_SECTOR_SIZE,
s->cluster_sectors * BDRV_SECTOR_SIZE);
if (ret < 0) {
goto fail;
}
ret = bdrv_write(bs, sector_num, buf, s->cluster_sectors); ret = bdrv_write(bs, sector_num, buf, s->cluster_sectors);
if (ret < 0) { if (ret < 0) {
goto fail; goto fail;