Turn d_set_d_op() BUG_ON() into WARN_ON_ONCE()
It's indicative of a real problem, and it actually triggers with
autofs4, but the BUG_ON() is excessive. The autofs4 case is being fixed
(to only set d_op in the ->lookup method) but not merged yet. In the
meantime this gets the code limping along.
Reported-by: Alex Elder <aelder@sgi.com>
Cc: Ian Kent <raven@themaw.net>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/dcache.c b/fs/dcache.c
index 0c6d5c5..274a222 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1357,8 +1357,8 @@
void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op)
{
- BUG_ON(dentry->d_op);
- BUG_ON(dentry->d_flags & (DCACHE_OP_HASH |
+ WARN_ON_ONCE(dentry->d_op);
+ WARN_ON_ONCE(dentry->d_flags & (DCACHE_OP_HASH |
DCACHE_OP_COMPARE |
DCACHE_OP_REVALIDATE |
DCACHE_OP_DELETE ));