Commit 8a56457f authored Jun 05, 2014 by Josef Bacik Committed by Chris Mason Jun 09, 2014

Btrfs: don't check nodes for extent items



The backref code was looking at nodes as well as leaves when we tried to
populate extent item entries.  This is not good, and although we go away with it
for the most part because we'd skip where disk_bytenr != random_memory,
sometimes random_memory would match and suddenly boom.  This fixes that problem.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

parent 6fdef6d4

fs/btrfs/backref.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -988,11 +988,12 @@ again:
		goto out;
		}
		if (ref->count && ref->parent) {
		if (extent_item_pos && !ref->inode_list) {
		if (extent_item_pos && !ref->inode_list &&
		ref->level == 0) {
		u32 bsz;
		struct extent_buffer *eb;
		bsz = btrfs_level_size(fs_info->extent_root,
		info_level);
		ref->level);
		eb = read_tree_block(fs_info->extent_root,
		ref->parent, bsz, 0);
		if (!eb \|\| !extent_buffer_uptodate(eb)) {