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mm: vmalloc: introduce array allocation functions

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Linux has dozens of occurrences of vmalloc(array_size()) and
vzalloc(array_size()).  Allow to simplify the code by providing
vmalloc_array and vcalloc, as well as the underscored variants that let
the caller specify the GFP flags.

Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2022-03-08 04:47:22 -05:00
parent 0564eeb71b
commit a8749a35c3
2 changed files with 55 additions and 0 deletions
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5
include/linux/vmalloc.h
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@@ -159,6 +159,11 @@ void *__vmalloc_node(unsigned long size, unsigned long align, gfp_t gfp_mask,
int node, const void *caller) __alloc_size(1);
void *vmalloc_no_huge(unsigned long size) __alloc_size(1);
extern void *__vmalloc_array(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
extern void *vmalloc_array(size_t n, size_t size) __alloc_size(1, 2);
extern void *__vcalloc(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
extern void *vcalloc(size_t n, size_t size) __alloc_size(1, 2);
extern void vfree(const void *addr);
extern void vfree_atomic(const void *addr);