It doens't make sense to process prealloc extents as pages will be
filled with zero when reading prealloc extents.
Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
fs/btrfs/scrub.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index ec56f33..9882513 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -4480,7 +4480,8 @@ static int check_extent_to_block(struct btrfs_inode *inode, u64 start, u64 len,
* move on to the next inode.
*/
if (em->block_start > logical ||
- em->block_start + em->block_len < logical + len) {
+ em->block_start + em->block_len < logical + len ||
+ test_bit(EXTENT_FLAG_PREALLOC, &em->flags)) {
free_extent_map(em);
ret = 1;
goto out_unlock;
--
2.9.4
--
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