From: Dave Hansen <dave.hansen@linux.intel.com>
Date: Wed, 29 Jan 2014 22:05:50 +0000 (-0800)
Subject: mm/slub.c: do not VM_BUG_ON_PAGE() for temporary on-stack pages
X-Git-Tag: v3.14-rc1~62^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0132ac0f275434db32111b8cf7372d991899da3;p=pandora-kernel.git

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>
---

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