When using lowmem mode, btrfs check will report ASSERT for calling btrfs_read_fs_root() on tree reloc tree.
Fix it by checking objectid and call btrfs_read_fs_root_no_cache() for tree reloc tree. Signed-off-by: Qu Wenruo <[email protected]> --- cmds-check.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/cmds-check.c b/cmds-check.c index 30eabb2..30847a0 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -11411,7 +11411,11 @@ static int check_chunks_and_extents_v2(struct btrfs_root *root) goto next; key.offset = (u64)-1; - cur_root = btrfs_read_fs_root(root->fs_info, &key); + if (key.objectid == BTRFS_TREE_RELOC_OBJECTID) + cur_root = btrfs_read_fs_root_no_cache(root->fs_info, + &key); + else + cur_root = btrfs_read_fs_root(root->fs_info, &key); if (IS_ERR(cur_root) || !cur_root) { error("failed to read tree: %lld", key.objectid); goto next; @@ -11420,6 +11424,8 @@ static int check_chunks_and_extents_v2(struct btrfs_root *root) ret = traverse_tree_block(cur_root, cur_root->node); err |= ret; + if (key.objectid == BTRFS_TREE_RELOC_OBJECTID) + btrfs_free_fs_root(cur_root); next: ret = btrfs_next_item(root1, &path); if (ret) -- 2.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
