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mm/debug: print head flags in dump_page

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Tail page flags contain very little useful information.  Print the head
page's flags instead.  While the flags will contain "head" for tail pages,
this should not be too confusing as the previous line starts with the word
"head:" and so the flags should be interpreted as belonging to the head
page.

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>
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/20200709202117.7216-4-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-08-06 23:19:39 -07:00 committed by Linus Torvalds
parent 452b557c95
commit 0b93d59e90
1 changed files with 1 additions and 1 deletions
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2
mm/debug.c
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@ -168,7 +168,7 @@ void __dump_page(struct page *page, const char *reason)
out_mapping:
BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1);
pr_warn("%sflags: %#lx(%pGp)%s\n", type, page->flags, &page->flags,
pr_warn("%sflags: %#lx(%pGp)%s\n", type, head->flags, &head->flags,
page_cma ? " CMA" : "");
hex_only: