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mm/sl[au]b: use own bulk free function when bulk alloc failed 

There is no benefit to call generic bulk free function when
kmem_cache_alloc_bulk() failed. Use own kmem_cache_free_bulk()
instead of generic function.

Note that if kmem_cache_alloc_bulk() fails to allocate first object in
SLUB, size is zero. So allow passing size == 0 to kmem_cache_free_bulk()
like SLAB's.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Hyeonggon Yoo 2022-06-15 00:26:34 +09:00 committed by Vlastimil Babka
parent b77d5b1b83
commit 2055e67bb6
2 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
mm/slab.c
View File

@ -3553,7 +3553,7 @@ error:
local_irq_enable();
cache_alloc_debugcheck_after_bulk(s, flags, i, p, _RET_IP_);
slab_post_alloc_hook(s, objcg, flags, i, p, false);
__kmem_cache_free_bulk(s, i, p);
kmem_cache_free_bulk(s, i, p);
return 0;
}
EXPORT_SYMBOL(kmem_cache_alloc_bulk);

4
mm/slub.c
View File

@ -3647,7 +3647,7 @@ int build_detached_freelist(struct kmem_cache *s, size_t size,
/* Note that interrupts must be enabled when calling this function. */
void kmem_cache_free_bulk(struct kmem_cache *s, size_t size, void **p)
{
if (WARN_ON(!size))
if (!size)
return;
do {
@ -3738,7 +3738,7 @@ int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
error:
slub_put_cpu_ptr(s->cpu_slab);
slab_post_alloc_hook(s, objcg, flags, i, p, false);
__kmem_cache_free_bulk(s, i, p);
kmem_cache_free_bulk(s, i, p);
return 0;
}
EXPORT_SYMBOL(kmem_cache_alloc_bulk);