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| author | Josef Bacik <josef@toxicpanda.com> | 2020-01-24 17:32:43 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-03-23 19:01:30 +0300 |
| commit | 76deacf02387f0cd5b6125fb54caaabe595ffc17 (patch) | |
| tree | 26c8f5228772867b18f579d62c907a0530ccf77b | |
| parent | 3d7babdcf2cc87367e694f9b67460dde22c48319 (diff) | |
| download | linux-76deacf02387f0cd5b6125fb54caaabe595ffc17.tar.xz | |
btrfs: hold a ref on the root in create_reloc_inode
We're creating a reloc inode in the data reloc tree, we need to hold a
ref on the root while we're doing that.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/relocation.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 976917ca412a..a257147db7a9 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4351,10 +4351,14 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info, root = read_fs_root(fs_info, BTRFS_DATA_RELOC_TREE_OBJECTID); if (IS_ERR(root)) return ERR_CAST(root); + if (!btrfs_grab_fs_root(root)) + return ERR_PTR(-ENOENT); trans = btrfs_start_transaction(root, 6); - if (IS_ERR(trans)) + if (IS_ERR(trans)) { + btrfs_put_fs_root(root); return ERR_CAST(trans); + } err = btrfs_find_free_objectid(root, &objectid); if (err) @@ -4372,6 +4376,7 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info, err = btrfs_orphan_add(trans, BTRFS_I(inode)); out: + btrfs_put_fs_root(root); btrfs_end_transaction(trans); btrfs_btree_balance_dirty(fs_info); if (err) { |