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| author | Josef Bacik <josef@toxicpanda.com> | 2020-01-24 09:32:30 -0500 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-02-10 14:40:29 +0100 |
| commit | 5f526def3313a6f2536b1fb27f721f6f67288496 (patch) | |
| tree | 1022d3605dae64ba6ec33c843a5ec6176cce2ea6 | |
| parent | bf34b1a99de01cf4580e4dd7aeec58d1c1e58da0 (diff) | |
| download | btrfs-next-5f526def3313a6f2536b1fb27f721f6f67288496.tar.gz | |
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 746d569d234e62..ae8b3765658e50 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; |