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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-08-07 08:19:35 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 20:33:23 +0200 |
| commit | 452b557c9500d27903a20c450ca8d2919c3742be (patch) | |
| tree | c783712654fd7e0766805402d4ae5f07cb48d931 /mm/debug.c | |
| parent | mm/debug: handle page->mapping better in dump_page (diff) | |
| download | linux-452b557c9500d27903a20c450ca8d2919c3742be.tar.xz linux-452b557c9500d27903a20c450ca8d2919c3742be.zip | |
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.
Reported-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: William Kucharski <william.kucharski@oracle.com>
Link: http://lkml.kernel.org/r/20200709202117.7216-3-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/debug.c')
| -rw-r--r-- | mm/debug.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/mm/debug.c b/mm/debug.c index 567b80b0b9e4..b0ebf83eec89 100644 --- a/mm/debug.c +++ b/mm/debug.c @@ -95,27 +95,21 @@ void __dump_page(struct page *page, const char *reason) */ 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)) |