The patch titled
Subject: mm/debug: dump compound page information on a second line
has been added to the -mm tree. Its filename is
mm-dump-compound-page-information-on-a-second-line.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-dump-compound-page-information-on-a-second-line.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-dump-compound-page-information-on-a-second-line.patch
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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/debug: dump compound page information on a second line
Simplify both the implementation and the output by splitting all the
compound page information onto a second line.
Link: http://lkml.kernel.org/r/20200709202117.7216-3-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reported-by: John Hubbard <jhubbard@xxxxxxxxxx>
Acked-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: William Kucharski <william.kucharski@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/debug.c | 30 ++++++++++++------------------
1 file changed, 12 insertions(+), 18 deletions(-)
--- a/mm/debug.c~mm-dump-compound-page-information-on-a-second-line
+++ a/mm/debug.c
@@ -89,27 +89,21 @@ void __dump_page(struct page *page, cons
*/
mapcount = PageSlab(head) ? 0 : page_mapcount(page);
- if (compound)
+ pr_warn("page:%px refcount:%d mapcount:%d mapping:%p index:%#lx\n",
+ page, page_ref_count(head), mapcount, mapping,
+ page_to_pgoff(page));
+ if (compound) {
if (hpage_pincount_available(page)) {
- pr_warn("page:%px refcount:%d mapcount:%d mapping:%p "
- "index:%#lx head:%px order:%u "
- "compound_mapcount:%d compound_pincount:%d\n",
- page, page_ref_count(head), mapcount,
- mapping, page_to_pgoff(page), head,
- compound_order(head), compound_mapcount(page),
- compound_pincount(page));
+ pr_warn("head:%px order:%u compound_mapcount:%d compound_pincount:%d\n",
+ head, compound_order(head),
+ compound_mapcount(head),
+ compound_pincount(head));
} else {
- pr_warn("page:%px refcount:%d mapcount:%d mapping:%p "
- "index:%#lx head:%px order:%u "
- "compound_mapcount:%d\n",
- page, page_ref_count(head), mapcount,
- mapping, page_to_pgoff(page), head,
- compound_order(head), compound_mapcount(page));
+ pr_warn("head:%px order:%u compound_mapcount:%d\n",
+ head, compound_order(head),
+ compound_mapcount(head));
}
- else
- pr_warn("page:%px refcount:%d mapcount:%d mapping:%p index:%#lx\n",
- page, page_ref_count(page), mapcount,
- mapping, page_to_pgoff(page));
+ }
if (PageKsm(page))
type = "ksm ";
else if (PageAnon(page))
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-handle-page-mapping-better-in-dump_page.patch
mm-dump-compound-page-information-on-a-second-line.patch
mm-print-head-flags-in-dump_page.patch
mm-switch-dump_page-to-get_kernel_nofault.patch
mm-print-the-inode-number-in-dump_page.patch
mm-print-hashed-address-of-struct-page.patch
vmalloc-convert-to-xarray.patch
mm-store-compound_nr-as-well-as-compound_order.patch
mm-move-page-flags-include-to-top-of-file.patch
mm-add-thp_order.patch
mm-add-thp_size.patch
mm-replace-hpage_nr_pages-with-thp_nr_pages.patch
mm-add-thp_head.patch
mm-introduce-offset_in_thp.patch
