Commit ed5d5f37 authored Feb 27, 2018 by Liu Bo Committed by David Sterba Mar 26, 2018

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 <bo.li.liu@oracle.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent d612ac59

fs/btrfs/scrub.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;