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| author | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-10-22 20:02:56 +0200 |
|---|---|---|
| committer | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-10-23 15:09:14 +0200 |
| commit | ba1bfbd592c1adddd5d0005f587a6e308e25c949 (patch) | |
| tree | fa6f07ea288c4798f297e400a7abff38e66f891c /fs | |
| parent | 57911b8ba814fae01306376a0d02bc7cdc88dc94 (diff) | |
| download | linux-ba1bfbd592c1adddd5d0005f587a6e308e25c949.tar.gz linux-ba1bfbd592c1adddd5d0005f587a6e308e25c949.tar.xz | |
Btrfs: fix a tree mod logging issue for root replacement operations
Avoid the implicit free by tree_mod_log_set_root_pointer, which is wrong in
two places. Where needed, we call tree_mod_log_free_eb explicitly now.
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ctree.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 44a7e25353a6..e6b75ccd2850 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -647,8 +647,6 @@ tree_mod_log_insert_root(struct btrfs_fs_info *fs_info, if (tree_mod_dont_log(fs_info, NULL)) return 0; - __tree_mod_log_free_eb(fs_info, old_root); - ret = tree_mod_alloc(fs_info, flags, &tm); if (ret < 0) goto out; @@ -926,12 +924,7 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans, ret = btrfs_dec_ref(trans, root, buf, 1, 1); BUG_ON(ret); /* -ENOMEM */ } - /* - * don't log freeing in case we're freeing the root node, this - * is done by tree_mod_log_set_root_pointer later - */ - if (buf != root->node && btrfs_header_level(buf) != 0) - tree_mod_log_free_eb(root->fs_info, buf); + tree_mod_log_free_eb(root->fs_info, buf); clean_tree_block(trans, root, buf); *last_ref = 1; } @@ -1728,6 +1721,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans, goto enospc; } + tree_mod_log_free_eb(root->fs_info, root->node); tree_mod_log_set_root_pointer(root, child); rcu_assign_pointer(root->node, child); |