system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-20 02:57:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

btrfs: hold a root ref in btrfs_get_dentry

Browse source 
Looking up the inode we need to search the root, make sure we hold a
reference on that root while we're doing the lookup.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-01-24 09:32:29 -05:00 committed by David Sterba
parent 9326f76f4b
commit bdf70b9e75
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
fs/btrfs/export.c
View file

@ -82,12 +82,17 @@ static struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
err = PTR_ERR(root);
goto fail;
}
if (!btrfs_grab_fs_root(root)) {
err = -ENOENT;
goto fail;
}
key.objectid = objectid;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
inode = btrfs_iget(sb, &key, root);
btrfs_put_fs_root(root);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
goto fail;