From c18c20f16219516b12a4f2fd29c25e06be97e064 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Mon, 7 Nov 2022 17:11:27 +0100 Subject: [PATCH] mm, slab: remove duplicate kernel-doc comment for ksize() Akira reports: > "make htmldocs" reports duplicate C declaration of ksize() as follows: > /linux/Documentation/core-api/mm-api:43: ./mm/slab_common.c:1428: WARNING: Duplicate C declaration, also defined at core-api/mm-api:212. > Declaration is '.. c:function:: size_t ksize (const void *objp)'. > This is due to the kernel-doc comment for ksize() declaration added in > include/linux/slab.h by commit 05a940656e1e ("slab: Introduce > kmalloc_size_roundup()"). There is an older kernel-doc comment for ksize() definition in mm/slab_common.c, which is not only duplicated, but also contradicts the new one - the additional storage discovered by ksize() should not be used by callers anymore. Delete the old kernel-doc. Reported-by: Akira Yokosawa Link: https://lore.kernel.org/all/d33440f6-40cf-9747-3340-e54ffaf7afb8@gmail.com/ Fixes: 05a940656e1e ("slab: Introduce kmalloc_size_roundup()") Cc: Kees Cook Signed-off-by: Vlastimil Babka --- mm/slab_common.c | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/mm/slab_common.c b/mm/slab_common.c index fa78456..0042fb2 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1409,20 +1409,6 @@ void kfree_sensitive(const void *p) } EXPORT_SYMBOL(kfree_sensitive); -/** - * ksize - get the actual amount of memory allocated for a given object - * @objp: Pointer to the object - * - * kmalloc may internally round up allocations and return more memory - * than requested. ksize() can be used to determine the actual amount of - * memory allocated. The caller may use this additional memory, even though - * a smaller amount of memory was initially specified with the kmalloc call. - * The caller must guarantee that objp points to a valid object previously - * allocated with either kmalloc() or kmem_cache_alloc(). The object - * must not be freed during the duration of the call. - * - * Return: size of the actual memory used by @objp in bytes - */ size_t ksize(const void *objp) { size_t size; -- 2.7.4