diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slab.c | 46 | ||||
| -rw-r--r-- | mm/slob.c | 33 | ||||
| -rw-r--r-- | mm/slub.c | 37 | ||||
| -rw-r--r-- | mm/util.c | 34 |
4 files changed, 34 insertions, 116 deletions
diff --git a/mm/slab.c b/mm/slab.c index a453383333f..4bd8a53091b 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3726,52 +3726,6 @@ EXPORT_SYMBOL(__kmalloc); #endif /** - * krealloc - reallocate memory. The contents will remain unchanged. - * @p: object to reallocate memory for. - * @new_size: how many bytes of memory are required. - * @flags: the type of memory to allocate. - * - * The contents of the object pointed to are preserved up to the - * lesser of the new and old sizes. If @p is %NULL, krealloc() - * behaves exactly like kmalloc(). If @size is 0 and @p is not a - * %NULL pointer, the object pointed to is freed. - */ -void *krealloc(const void *p, size_t new_size, gfp_t flags) -{ - struct kmem_cache *cache, *new_cache; - void *ret; - - if (unlikely(!p)) - return kmalloc_track_caller(new_size, flags); - - if (unlikely(!new_size)) { - kfree(p); - return NULL; - } - - cache = virt_to_cache(p); - new_cache = __find_general_cachep(new_size, flags); - - /* - * If new size fits in the current cache, bail out. - */ - if (likely(cache == new_cache)) - return (void *)p; - - /* - * We are on the slow-path here so do not use __cache_alloc - * because it bloats kernel text. - */ - ret = kmalloc_track_caller(new_size, flags); - if (ret) { - memcpy(ret, p, min(new_size, ksize(p))); - kfree(p); - } - return ret; -} -EXPORT_SYMBOL(krealloc); - -/** * kmem_cache_free - Deallocate an object * @cachep: The cache the allocation was from. * @objp: The previously allocated object. diff --git a/mm/slob.c b/mm/slob.c index b4899079d8b..154e7bdf354 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -446,39 +446,6 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) } EXPORT_SYMBOL(__kmalloc_node); -/** - * krealloc - reallocate memory. The contents will remain unchanged. - * - * @p: object to reallocate memory for. - * @new_size: how many bytes of memory are required. - * @flags: the type of memory to allocate. - * - * The contents of the object pointed to are preserved up to the - * lesser of the new and old sizes. If @p is %NULL, krealloc() - * behaves exactly like kmalloc(). If @size is 0 and @p is not a - * %NULL pointer, the object pointed to is freed. - */ -void *krealloc(const void *p, size_t new_size, gfp_t flags) -{ - void *ret; - - if (unlikely(!p)) - return kmalloc_track_caller(new_size, flags); - - if (unlikely(!new_size)) { - kfree(p); - return NULL; - } - - ret = kmalloc_track_caller(new_size, flags); - if (ret) { - memcpy(ret, p, min(new_size, ksize(p))); - kfree(p); - } - return ret; -} -EXPORT_SYMBOL(krealloc); - void kfree(const void *block) { struct slob_page *sp; diff --git a/mm/slub.c b/mm/slub.c index a18708821c1..1b0a95d75db 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2467,43 +2467,6 @@ int kmem_cache_shrink(struct kmem_cache *s) } EXPORT_SYMBOL(kmem_cache_shrink); -/** - * krealloc - reallocate memory. The contents will remain unchanged. - * @p: object to reallocate memory for. - * @new_size: how many bytes of memory are required. - * @flags: the type of memory to allocate. - * - * The contents of the object pointed to are preserved up to the - * lesser of the new and old sizes. If @p is %NULL, krealloc() - * behaves exactly like kmalloc(). If @size is 0 and @p is not a - * %NULL pointer, the object pointed to is freed. - */ -void *krealloc(const void *p, size_t new_size, gfp_t flags) -{ - void *ret; - size_t ks; - - if (unlikely(!p || p == ZERO_SIZE_PTR)) - return kmalloc(new_size, flags); - - if (unlikely(!new_size)) { - kfree(p); - return ZERO_SIZE_PTR; - } - - ks = ksize(p); - if (ks >= new_size) - return (void *)p; - - ret = kmalloc(new_size, flags); - if (ret) { - memcpy(ret, p, min(new_size, ks)); - kfree(p); - } - return ret; -} -EXPORT_SYMBOL(krealloc); - /******************************************************************** * Basic setup of slabs *******************************************************************/ diff --git a/mm/util.c b/mm/util.c index ace2aea69f1..18396ea63ee 100644 --- a/mm/util.c +++ b/mm/util.c @@ -58,6 +58,40 @@ void *kmemdup(const void *src, size_t len, gfp_t gfp) } EXPORT_SYMBOL(kmemdup); +/** + * krealloc - reallocate memory. The contents will remain unchanged. + * @p: object to reallocate memory for. + * @new_size: how many bytes of memory are required. + * @flags: the type of memory to allocate. + * + * The contents of the object pointed to are preserved up to the + * lesser of the new and old sizes. If @p is %NULL, krealloc() + * behaves exactly like kmalloc(). If @size is 0 and @p is not a + * %NULL pointer, the object pointed to is freed. + */ +void *krealloc(const void *p, size_t new_size, gfp_t flags) +{ + void *ret; + size_t ks; + + if (unlikely(!new_size)) { + kfree(p); + return NULL; + } + + ks = ksize(p); + if (ks >= new_size) + return (void *)p; + + ret = kmalloc_track_caller(new_size, flags); + if (ret) { + memcpy(ret, p, min(new_size, ks)); + kfree(p); + } + return ret; +} +EXPORT_SYMBOL(krealloc); + /* * strndup_user - duplicate an existing string from user space * |