From: Hugh Dickins Date: Wed, 22 Jun 2005 00:15:08 +0000 (-0700) Subject: [PATCH] bad_page: clear reclaim and slab X-Git-Tag: v2.6.13-rc4~130^2~202^2~135 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=334795eca421287c41c257992027d29659dc0f97;p=linux-2.6-omap-h63xx.git [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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);