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mm: remove __krealloc

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Since 5.5-rc1 the last user of this function is gone, so remove the
functionality.

See commit
2ad9d7747c ("netfilter: conntrack: free extension area immediately")
for details.

Link: http://lkml.kernel.org/r/20191212223442.22141-1-fw@strlen.de
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Florian Westphal 2020-02-03 17:34:58 -08:00 • committed by Linus Torvalds
parent 9a8c8b431b
commit 1c948715a1
3 changed files with 0 additions and 27 deletions
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1
include/linux/slab.h
View file

@ -184,7 +184,6 @@ void memcg_deactivate_kmem_caches(struct mem_cgroup *, struct mem_cgroup *);
/* /*
* Common kmalloc functions provided by all allocators * Common kmalloc functions provided by all allocators
*/ */
void * __must_check __krealloc(const void *, size_t, gfp_t);
void * __must_check krealloc(const void *, size_t, gfp_t); void * __must_check krealloc(const void *, size_t, gfp_t);
void kfree(const void *); void kfree(const void *);
void kzfree(const void *); void kzfree(const void *);

22
mm/slab_common.c
View file

@ -1676,28 +1676,6 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size,
return ret; return ret;
} }
/**
* __krealloc - like krealloc() but don't free @p.
* @p: object to reallocate memory for.
* @new_size: how many bytes of memory are required.
* @flags: the type of memory to allocate.
*
* This function is like krealloc() except it never frees the originally
* allocated buffer. Use this if you don't want to free the buffer immediately
* like, for example, with RCU.
*
* Return: pointer to the allocated memory or %NULL in case of error
*/
void *__krealloc(const void *p, size_t new_size, gfp_t flags)
{
if (unlikely(!new_size))
return ZERO_SIZE_PTR;
return __do_krealloc(p, new_size, flags);
}
EXPORT_SYMBOL(__krealloc);
/** /**
* krealloc - reallocate memory. The contents will remain unchanged. * krealloc - reallocate memory. The contents will remain unchanged.
* @p: object to reallocate memory for. * @p: object to reallocate memory for.

4
scripts/coccinelle/free/devm_free.cocci
View file

@ -90,8 +90,6 @@ position p;
kfree@p(x) kfree@p(x)
| |
kzfree@p(x) kzfree@p(x)
|
__krealloc@p(x, ...)
| |
krealloc@p(x, ...) krealloc@p(x, ...)
| |
@ -116,8 +114,6 @@ position p != safe.p;
| |
* kzfree@p(x) * kzfree@p(x)
| |
* __krealloc@p(x, ...)
|
* krealloc@p(x, ...) * krealloc@p(x, ...)
| |
* free_pages@p(x, ...) * free_pages@p(x, ...)