Commit 8e9aa51f authored by Zhao Lei's avatar Zhao Lei Committed by David Sterba
Browse files

btrfs: reada: Add missed segment checking in reada_find_zone 



In rechecking zone-in-tree, we still need to check zone include
our logical address.

Signed-off-by: default avatarZhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent c37f49c7

fs/btrfs/reada.c

+3 −1
Original line number Diff line number Diff line
@@ -303,8 +303,10 @@ static struct reada_zone *reada_find_zone(struct btrfs_fs_info *fs_info, 
		kfree(zone);

		ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone,

					     logical >> PAGE_CACHE_SHIFT, 1);

		if (ret == 1)

		if (ret == 1 && logical >= zone->start && logical <= zone->end)

			kref_get(&zone->refcnt);

		else

			zone = NULL;

	}

	spin_unlock(&fs_info->reada_lock);