From 334795eca421287c41c257992027d29659dc0f97 Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hugh@veritas.com>
Date: Tue, 21 Jun 2005 17:15:08 -0700
Subject: [PATCH] [PATCH] bad_page: clear reclaim and slab
Since free_pages_check complains if PG_reclaim or PG_slab is set, bad_page
ought to clear them to avoid repetitive reports (Nikita noticed this too).
Let prep_new_page check page_count and PG_slab as free_pages_check does.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
mm/page_alloc.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 418102a0292..62b950901d6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -105,11 +105,13 @@ static void bad_page(const char *function, struct page *page)
printk(KERN_EMERG "Backtrace:\n");
dump_stack();
printk(KERN_EMERG "Trying to fix it up, but a reboot is needed\n");
- page->flags &= ~(1 << PG_private |
+ page->flags &= ~(1 << PG_lru |
+ 1 << PG_private |
1 << PG_locked |
- 1 << PG_lru |
1 << PG_active |
1 << PG_dirty |
+ 1 << PG_reclaim |
+ 1 << PG_slab |
1 << PG_swapcache |
1 << PG_writeback);
set_page_count(page, 0);
@@ -440,14 +442,17 @@ void set_page_refs(struct page *page, int order)
*/
static void prep_new_page(struct page *page, int order)
{
- if (page->mapping || page_mapcount(page) ||
- (page->flags & (
+ if ( page_mapcount(page) ||
+ page->mapping != NULL ||
+ page_count(page) != 0 ||
+ (page->flags & (
+ 1 << PG_lru |
1 << PG_private |
1 << PG_locked |
- 1 << PG_lru |
1 << PG_active |
1 << PG_dirty |
1 << PG_reclaim |
+ 1 << PG_slab |
1 << PG_swapcache |
1 << PG_writeback )))
bad_page(__FUNCTION__, page);
--
2.41.3