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mm/slub: Convert print_page_info() to print_slab_info()

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Improve the type safety and prepare for further conversion. For flags
access, convert to folio internally.

[ vbabka@suse.cz: access flags via folio_flags() ]

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-10-04 14:46:34 +01:00 committed by Vlastimil Babka
parent 0393895b09
commit fb012e278d
1 changed files with 7 additions and 6 deletions
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13
mm/slub.c
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@ -788,12 +788,13 @@ void print_tracking(struct kmem_cache *s, void *object)
print_track("Freed", get_track(s, object, TRACK_FREE), pr_time); print_track("Freed", get_track(s, object, TRACK_FREE), pr_time);
} }
static void print_page_info(struct page *page) static void print_slab_info(const struct slab *slab)
{ {
pr_err("Slab 0x%p objects=%u used=%u fp=0x%p flags=%pGp\n", struct folio *folio = (struct folio *)slab_folio(slab);
page, page->objects, page->inuse, page->freelist,
&page->flags);
pr_err("Slab 0x%p objects=%u used=%u fp=0x%p flags=%pGp\n",
slab, slab->objects, slab->inuse, slab->freelist,
folio_flags(folio, 0));
} }
static void slab_bug(struct kmem_cache *s, char *fmt, ...) static void slab_bug(struct kmem_cache *s, char *fmt, ...)
@ -833,7 +834,7 @@ static void print_trailer(struct kmem_cache *s, struct page *page, u8 *p)
print_tracking(s, p); print_tracking(s, p);
print_page_info(page); print_slab_info(page_slab(page));
pr_err("Object 0x%p @offset=%tu fp=0x%p\n\n", pr_err("Object 0x%p @offset=%tu fp=0x%p\n\n",
p, p - addr, get_freepointer(s, p)); p, p - addr, get_freepointer(s, p));
@ -903,7 +904,7 @@ static __printf(3, 4) void slab_err(struct kmem_cache *s, struct page *page,
vsnprintf(buf, sizeof(buf), fmt, args); vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args); va_end(args);
slab_bug(s, "%s", buf); slab_bug(s, "%s", buf);
print_page_info(page); print_slab_info(page_slab(page));
dump_stack(); dump_stack();
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
} }