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 <quwenruo@xxxxxxxxxxxxxx>
---
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
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