mm/slub.c: do not VM_BUG_ON_PAGE() for temporary on-stack pages
authorDave Hansen <dave.hansen@linux.intel.com>
Wed, 29 Jan 2014 22:05:50 +0000 (14:05 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 30 Jan 2014 00:22:40 +0000 (16:22 -0800)
commita0132ac0f275434db32111b8cf7372d991899da3
tree5fb93dbdc8292182d7b1c5505cbeea00c985276c
parentba3253c78d7443d2c80c544b1e7aec9f39938395
mm/slub.c: do not VM_BUG_ON_PAGE() for temporary on-stack pages

Commit 309381feaee5 ("mm: dump page when hitting a VM_BUG_ON using
VM_BUG_ON_PAGE") added a bunch of VM_BUG_ON_PAGE() calls.

But, most of the ones in the slub code are for _temporary_ 'struct
page's which are declared on the stack and likely have lots of gunk in
them.  Dumping their contents out will just confuse folks looking at
bad_page() output.  Plus, if we try to page_to_pfn() on them or
soemthing, we'll probably oops anyway.

Turn them back in to VM_BUG_ON()s.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/slub.c