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authorMatthew Wilcox (Oracle) <willy@infradead.org>2020-08-07 09:19:48 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-07 21:33:23 +0300
commit54a75157d97976f35e63e37e31e39bda622cbf39 (patch)
tree715ccd81ea430c236687825473b9d6eae9134a8e
parent9bdaf2cc5eb570a875c6871ef7bee86a8c5be2d7 (diff)
downloadlinux-54a75157d97976f35e63e37e31e39bda622cbf39.tar.xz
mm/debug: print hashed address of struct page
The actual address of the struct page isn't particularly helpful, while the hashed address helps match with other messages elsewhere. Add the PFN that the page refers to in order to help diagnose problems where the page is improperly aligned for the purpose. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: William Kucharski <william.kucharski@oracle.com> Link: http://lkml.kernel.org/r/20200709202117.7216-7-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/debug.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/debug.c b/mm/debug.c
index c4dbe4def83d..8f569db9a514 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -95,17 +95,17 @@ void __dump_page(struct page *page, const char *reason)
*/
mapcount = PageSlab(head) ? 0 : page_mapcount(page);
- pr_warn("page:%px refcount:%d mapcount:%d mapping:%p index:%#lx\n",
+ pr_warn("page:%p refcount:%d mapcount:%d mapping:%p index:%#lx pfn:%#lx\n",
page, page_ref_count(head), mapcount, mapping,
- page_to_pgoff(page));
+ page_to_pgoff(page), page_to_pfn(page));
if (compound) {
if (hpage_pincount_available(page)) {
- pr_warn("head:%px order:%u compound_mapcount:%d compound_pincount:%d\n",
+ pr_warn("head:%p order:%u compound_mapcount:%d compound_pincount:%d\n",
head, compound_order(head),
compound_mapcount(head),
compound_pincount(head));
} else {
- pr_warn("head:%px order:%u compound_mapcount:%d\n",
+ pr_warn("head:%p order:%u compound_mapcount:%d\n",
head, compound_order(head),
compound_mapcount(head));
}