I've run into a couple filesystems where btrfs-find-root would spin indefinitely. If the first cache extent start location is 0, we end up in an infinite loop in btrfs_next_bg(). Fix it by checking for that situation, and jumping to the next bg if necessary. Fixes: e2e0dae9 (btrfs-progs: volume: Fix a bug causing btrfs-find-root to skip first chunk) Signed-off-by: Justin Maggard <jmaggard@xxxxxxxxxxx> --- volumes.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/volumes.c b/volumes.c index b350e259..8c0c10ce 100644 --- a/volumes.c +++ b/volumes.c @@ -1278,6 +1278,8 @@ int btrfs_next_bg(struct btrfs_mapping_tree *map_tree, u64 *logical, *size = ce->size; return 0; } + if (!cur) + ce = next_cache_extent(ce); } return -ENOENT; -- 2.13.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
