[PATCH v2 4/5] mm/slab: Add __free() support for kvfree

[Dan Williams]

Allow for the declaration of variables that trigger kvfree() when they
go out of scope.

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
 include/linux/slab.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 848c7c82ad5a..241025367943 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -746,6 +746,8 @@ static inline __alloc_size(1, 2) void *kvcalloc(size_t n, size_t size, gfp_t fla
 extern void *kvrealloc(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
 		      __realloc_size(3);
 extern void kvfree(const void *addr);
+DEFINE_FREE(kvfree, void *, if (_T) kvfree(_T))
+
 extern void kvfree_sensitive(const void *addr, size_t len);
 
 unsigned int kmem_cache_size(struct kmem_cache *s);