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authorWu Fengguang <fengguang.wu@intel.com>2010-03-11 02:20:43 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-13 02:52:28 +0300
commit718a38211bf4375c0a1efad3afbc5dbaef5d33f9 (patch)
treeade6815c619705f0342f98cc8bb39fa3309c81a6 /include/linux/mm.h
parent9b3a6549b2602ca30f58715a0071e29f9898cae9 (diff)
downloadlinux-718a38211bf4375c0a1efad3afbc5dbaef5d33f9.tar.xz
mm: introduce dump_page() and print symbolic flag names
- introduce dump_page() to print the page info for debugging some error condition. - convert three mm users: bad_page(), print_bad_pte() and memory offline failure. - print an extra field: the symbolic names of page->flags Example dump_page() output: [ 157.521694] page:ffffea0000a7cba8 count:2 mapcount:1 mapping:ffff88001c901791 index:0x147 [ 157.525570] page flags: 0x100000000100068(uptodate|lru|active|swapbacked) Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Alex Chiang <achiang@hp.com> Cc: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Mel Gorman <mel@linux.vnet.ibm.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7f693b272c4a..e70f21beb4b4 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1465,5 +1465,7 @@ extern void shake_page(struct page *p, int access);
extern atomic_long_t mce_bad_pages;
extern int soft_offline_page(struct page *page, int flags);
+extern void dump_page(struct page *page);
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MM_H */