tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 03af78748485f63e8ed21d2e2585b5d1ec862ba6
commit: 1e55998017283d2f630d00f5ebc8b75202edc120 [2912/2956] autofs4: d_manage() should return -EISDIR when appropriate in rcu-walk mode.
reproduce: make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> fs/autofs4/root.c:466:25: sparse: incompatible types in comparison expression (different address spaces)
vim +466 fs/autofs4/root.c
450 if (status)
451 return status;
452
453 if (rcu_walk) {
454 /* We don't need fs_lock in rcu_walk mode,
455 * just testing 'AUTOFS_INFO_NO_RCU' is enough.
456 * simple_empty() takes a spinlock, so leave it
457 * to last.
458 * We only return -EISDIR when certain this isn't
459 * a mount-trap.
460 */
461 struct inode *inode;
462 if (ino->flags & (AUTOFS_INF_EXPIRING | AUTOFS_INF_NO_RCU))
463 return 0;
464 if (d_mountpoint(dentry))
465 return 0;
> 466 inode = rcu_dereference(dentry->d_inode);
467 if (inode && S_ISLNK(inode->i_mode))
468 return -EISDIR;
469 if (list_empty(&dentry->d_subdirs))
470 return 0;
471 if (!simple_empty(dentry))
472 return -EISDIR;
473 return 0;
474 }
---
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