superblock_has_perm
rc = superblock_has_perm(cred, sb, FILESYSTEM__QUOTAMOD, NULL);
rc = superblock_has_perm(cred, sb, FILESYSTEM__QUOTAGET, NULL);
return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);
return superblock_has_perm(cred, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
return superblock_has_perm(cred, path->dentry->d_sb,
return superblock_has_perm(cred, mnt->mnt_sb,
ret = superblock_has_perm(current_cred(), path->dentry->d_sb,