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authorVlastimil Babka <vbabka@suse.cz>2016-03-15 22:56:24 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-16 00:55:16 +0100
commitff8e81163889ac4c7f59e7f7db6377d0c5d8d69c (patch)
tree6b6cb957fafdee49e5453d4dc556f343d0a98d56 /mm/debug.c
parentmm, page_owner: dump page owner info from dump_page() (diff)
downloadlinux-ff8e81163889ac4c7f59e7f7db6377d0c5d8d69c.tar.xz
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mm, debug: move bad flags printing to bad_page()
Since bad_page() is the only user of the badflags parameter of dump_page_badflags(), we can move the code to bad_page() and simplify a bit. The dump_page_badflags() function is renamed to __dump_page() and can still be called separately from dump_page() for temporary debug prints where page_owner info is not desired. The only user-visible change is that page->mem_cgroup is printed before the bad flags. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/debug.c')
-rw-r--r--mm/debug.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/mm/debug.c b/mm/debug.c
index 61b1f1bb328e..df7247b0b532 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -40,8 +40,7 @@ const struct trace_print_flags vmaflag_names[] = {
{0, NULL}
};
-void dump_page_badflags(struct page *page, const char *reason,
- unsigned long badflags)
+void __dump_page(struct page *page, const char *reason)
{
pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx",
page, atomic_read(&page->_count), page_mapcount(page),
@@ -50,15 +49,12 @@ void dump_page_badflags(struct page *page, const char *reason,
pr_cont(" compound_mapcount: %d", compound_mapcount(page));
pr_cont("\n");
BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1);
+
pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags);
if (reason)
pr_alert("page dumped because: %s\n", reason);
- badflags &= page->flags;
- if (badflags)
- pr_alert("bad because of flags: %#lx(%pGp)\n", badflags,
- &badflags);
#ifdef CONFIG_MEMCG
if (page->mem_cgroup)
pr_alert("page->mem_cgroup:%p\n", page->mem_cgroup);
@@ -67,7 +63,7 @@ void dump_page_badflags(struct page *page, const char *reason,
void dump_page(struct page *page, const char *reason)
{
- dump_page_badflags(page, reason, 0);
+ __dump_page(page, reason);
dump_page_owner(page);
}
EXPORT_SYMBOL(dump_page);