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mm: Use struct slab in kmem_obj_info()

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All three implementations of slab support kmem_obj_info() which reports
details of an object allocated from the slab allocator.  By using the
slab type instead of the page type, we make it obvious that this can
only be called for slabs.

[ vbabka@suse.cz: also convert the related kmem_valid_obj() to folios ]

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Roman Gushchin <guro@fb.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-10-04 14:45:55 +01:00 • committed by Vlastimil Babka
parent 0c24811b12
commit 7213230af5
5 changed files with 24 additions and 23 deletions
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4
mm/slob.c
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@ -462,10 +462,10 @@ out:
}
#ifdef CONFIG_PRINTK
void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page)
void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct slab *slab)
{
kpp->kp_ptr = object;
kpp->kp_page = page;
kpp->kp_slab = slab;
}
#endif