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slab: port KMEM_CACHE_USERCOPY() to struct kmem_cache_args

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Make KMEM_CACHE_USERCOPY() use struct kmem_cache_args.

Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Christian Brauner 2024-09-05 09:56:54 +02:00 committed by Vlastimil Babka
parent 052d67b46b
commit 199cd13a74
1 changed files with 7 additions and 6 deletions
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13
include/linux/slab.h
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@ -294,12 +294,13 @@ int kmem_cache_shrink(struct kmem_cache *s);
* To whitelist a single field for copying to/from usercopy, use this
* macro instead for KMEM_CACHE() above.
*/
#define KMEM_CACHE_USERCOPY(__struct, __flags, __field) \
kmem_cache_create_usercopy(#__struct, \
sizeof(struct __struct), \
__alignof__(struct __struct), (__flags), \
offsetof(struct __struct, __field), \
sizeof_field(struct __struct, __field), NULL)
#define KMEM_CACHE_USERCOPY(__struct, __flags, __field) \
__kmem_cache_create_args(#__struct, sizeof(struct __struct), \
&(struct kmem_cache_args) { \
.align = __alignof__(struct __struct), \
.useroffset = offsetof(struct __struct, __field), \
.usersize = sizeof_field(struct __struct, __field), \
}, (__flags))
/*
* Common kmalloc functions provided by all allocators