hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr()

When we reach here with inode = NULL, we should have crashed as inode has
already been dereferenced via hstate_inode.  So this BUG_ON(!inode) does
not take effect and should be removed.

Link: https://lkml.kernel.org/r/20210118110700.52506-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index dc4acef..71a00db 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -761,8 +761,6 @@ static int hugetlbfs_setattr(struct user_namespace *mnt_userns,
        unsigned int ia_valid = attr->ia_valid;
        struct hugetlbfs_inode_info *info = HUGETLBFS_I(inode);
 
-       BUG_ON(!inode);
-
        error = setattr_prepare(&init_user_ns, dentry, attr);
        if (error)
                return error;