diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2020-01-24 09:32:30 -0500 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-03-23 17:01:27 +0100 |
| commit | 02162a0265eb56742442ef42c58db8739ddd9b94 (patch) | |
| tree | 812ea11083b5419dd09e061959b7b52b87b0553c | |
| parent | bdf70b9e75f54a04941dc450abe61694e03fead4 (diff) | |
| download | linux-02162a0265eb56742442ef42c58db8739ddd9b94.tar.bz2 | |
btrfs: hold a ref on the root in __btrfs_run_defrag_inode
We are looking up an arbitrary inode, we need to hold a ref on the root
while we're doing this.
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/file.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 1bc7665f8ff0..27237bbaad65 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -292,11 +292,16 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info, ret = PTR_ERR(inode_root); goto cleanup; } + if (!btrfs_grab_fs_root(inode_root)) { + ret = -ENOENT; + goto cleanup; + } key.objectid = defrag->ino; key.type = BTRFS_INODE_ITEM_KEY; key.offset = 0; inode = btrfs_iget(fs_info->sb, &key, inode_root); + btrfs_put_fs_root(inode_root); if (IS_ERR(inode)) { ret = PTR_ERR(inode); goto cleanup; |