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Commit 224a88be authored by Christoph Lameter's avatar Christoph Lameter Committed by Pekka Enberg
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slub: for_each_object must be passed the number of objects in a slab



Pass the number of objects to the for_each_object macro. Most of these are
debug related.

Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
parent 39b26464
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+18 −6
Original line number Diff line number Diff line
@@ -327,8 +327,8 @@ static inline void set_freepointer(struct kmem_cache *s, void *object, void *fp)
}

/* Loop over all objects in a slab */
#define for_each_object(__p, __s, __addr) \
	for (__p = (__addr); __p < (__addr) + (__s)->objects * (__s)->size;\
#define for_each_object(__p, __s, __addr, __objects) \
	for (__p = (__addr); __p < (__addr) + (__objects) * (__s)->size;\
			__p += (__s)->size)

/* Scan freelist */
@@ -774,6 +774,7 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search)
	int nr = 0;
	void *fp = page->freelist;
	void *object = NULL;
	unsigned long max_objects;

	while (fp && nr <= page->objects) {
		if (fp == search)
@@ -798,6 +799,16 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search)
		nr++;
	}

	max_objects = (PAGE_SIZE << compound_order(page)) / s->size;
	if (max_objects > 65535)
		max_objects = 65535;

	if (page->objects != max_objects) {
		slab_err(s, page, "Wrong number of objects. Found %d but "
			"should be %d", page->objects, max_objects);
		page->objects = max_objects;
		slab_fix(s, "Number of objects adjusted.");
	}
	if (page->inuse != page->objects - nr) {
		slab_err(s, page, "Wrong object count. Counter is %d but "
			"counted were %d", page->inuse, page->objects - nr);
@@ -1135,7 +1146,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
		memset(start, POISON_INUSE, PAGE_SIZE << s->order);

	last = start;
	for_each_object(p, s, start) {
	for_each_object(p, s, start, page->objects) {
		setup_object(s, page, last);
		set_freepointer(s, last, p);
		last = p;
@@ -1157,7 +1168,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
		void *p;

		slab_pad_check(s, page);
		for_each_object(p, s, page_address(page))
		for_each_object(p, s, page_address(page),
						page->objects)
			check_object(s, page, p, 0);
		ClearSlabDebug(page);
	}
@@ -3273,7 +3285,7 @@ static int validate_slab(struct kmem_cache *s, struct page *page,
			return 0;
	}

	for_each_object(p, s, addr)
	for_each_object(p, s, addr, page->objects)
		if (!test_bit(slab_index(p, s, addr), map))
			if (!check_object(s, page, p, 1))
				return 0;
@@ -3549,7 +3561,7 @@ static void process_slab(struct loc_track *t, struct kmem_cache *s,
	for_each_free_object(p, s, page->freelist)
		set_bit(slab_index(p, s, addr), map);

	for_each_object(p, s, addr)
	for_each_object(p, s, addr, page->objects)
		if (!test_bit(slab_index(p, s, addr), map))
			add_location(t, s, get_track(s, p, alloc));
}