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authorDave Jones <davej@redhat.com>2006-10-11 01:21:27 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-11 11:14:19 -0700
commitb16bc64d1aed40fb9cff9187061005b2a89b5d5d (patch)
treef6892377e9be2dcf1270f1158a1c325052b3b5c9 /mm/rmap.c
parent469340236a7c9673df3e6a2425f559517f01464e (diff)
downloadop-kernel-dev-b16bc64d1aed40fb9cff9187061005b2a89b5d5d.zip
op-kernel-dev-b16bc64d1aed40fb9cff9187061005b2a89b5d5d.tar.gz
[PATCH] move rmap BUG_ON outside DEBUG_VM
We have a persistent dribble of reports of this BUG triggering. Its extended diagnostics were recently made conditional on CONFIG_DEBUG_VM, which was a bad idea - we want to know about it. Signed-off-by: Dave Jones <davej@redhat.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index e2155d7..a9136d8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -576,15 +576,14 @@ void page_add_file_rmap(struct page *page)
void page_remove_rmap(struct page *page)
{
if (atomic_add_negative(-1, &page->_mapcount)) {
-#ifdef CONFIG_DEBUG_VM
if (unlikely(page_mapcount(page) < 0)) {
printk (KERN_EMERG "Eeek! page_mapcount(page) went negative! (%d)\n", page_mapcount(page));
printk (KERN_EMERG " page->flags = %lx\n", page->flags);
printk (KERN_EMERG " page->count = %x\n", page_count(page));
printk (KERN_EMERG " page->mapping = %p\n", page->mapping);
+ BUG();
}
-#endif
- BUG_ON(page_mapcount(page) < 0);
+
/*
* It would be tidy to reset the PageAnon mapping here,
* but that might overwrite a racing page_add_anon_rmap
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