From ed5d5f37e653b606c93b2d5f1cdd155be6fefce0 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 27 Feb 2018 18:10:58 -0700 Subject: Btrfs: dev-replace: skip prealloc extents when copy nocow pages 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 Reviewed-by: Filipe Manana Signed-off-by: David Sterba --- fs/btrfs/scrub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/scrub.c') diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index beb441d0c5c6..9fb7d09842e6 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; -- cgit v1.2.3-59-g8ed1b