From 32705f2307060fb6b8cd0c60a258d70d032cb66e Mon Sep 17 00:00:00 2001 From: Su Yue Date: Tue, 8 May 2018 16:30:08 +0800 Subject: [PATCH] btrfs-progs: check: lowmem: remove parameter @trans of repair_tree_back_ref This patch removes parameter @trans of repair_tree_back_ref(). It calls try_avoid_extents_overwrite() and starts a transaction by itself. Note: This patch and next patches cause error in lowmem repair like: "Error: Commit_root already set when starting transaction". Such error will disappear after removing @trans finished. Signed-off-by: Su Yue Signed-off-by: David Sterba --- check/mode-lowmem.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c index b3a5bed2..9774ac09 100644 --- a/check/mode-lowmem.c +++ b/check/mode-lowmem.c @@ -544,11 +544,11 @@ static int end_avoid_extents_overwrite(struct btrfs_fs_info *fs_info) * * Returns error bits after repair. */ -static int repair_tree_block_ref(struct btrfs_trans_handle *trans, - struct btrfs_root *root, +static int repair_tree_block_ref(struct btrfs_root *root, struct extent_buffer *node, struct node_refs *nrefs, int level, int err) { + struct btrfs_trans_handle *trans = NULL; struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_root *extent_root = fs_info->extent_root; struct btrfs_path path; @@ -598,6 +598,16 @@ static int repair_tree_block_ref(struct btrfs_trans_handle *trans, if (nrefs->full_backref[level] != 0) flags |= BTRFS_BLOCK_FLAG_FULL_BACKREF; + ret = avoid_extents_overwrite(root->fs_info); + if (ret) + goto out; + trans = btrfs_start_transaction(extent_root, 1); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + trans = NULL; + error("fail to start transaction %s", strerror(-ret)); + goto out; + } /* insert an extent item */ if (insert_extent) { struct btrfs_disk_key copy_key; @@ -663,6 +673,8 @@ static int repair_tree_block_ref(struct btrfs_trans_handle *trans, nrefs->refs[level]++; out: + if (trans) + btrfs_commit_transaction(trans, extent_root); btrfs_release_path(&path); if (ret) { error( @@ -4365,7 +4377,7 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, btrfs_header_owner(cur), nrefs); if (repair && ret) - ret = repair_tree_block_ref(trans, root, + ret = repair_tree_block_ref(root, path->nodes[*level], nrefs, *level, ret); err |= ret;