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authorWANG Chao <chaowang@redhat.com>2014-08-07 03:06:58 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 05:01:19 +0400
commitf6f8ed47353597dcb895eb4a15a28af657392e72 (patch)
treee74c51da4b21049b82d9b3fc537d28f713989801 /mm/zsmalloc.c
parent21bda264f4243f61dfcc485174055f12ad0530b4 (diff)
downloadlinux-f6f8ed47353597dcb895eb4a15a28af657392e72.tar.xz
mm/vmalloc.c: clean up map_vm_area third argument
Currently map_vm_area() takes (struct page *** pages) as third argument, and after mapping, it moves (*pages) to point to (*pages + nr_mappped_pages). It looks like this kind of increment is useless to its caller these days. The callers don't care about the increments and actually they're trying to avoid this by passing another copy to map_vm_area(). The caller can always guarantee all the pages can be mapped into vm_area as specified in first argument and the caller only cares about whether map_vm_area() fails or not. This patch cleans up the pointer movement in map_vm_area() and updates its callers accordingly. Signed-off-by: WANG Chao <chaowang@redhat.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/zsmalloc.c')
-rw-r--r--mm/zsmalloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index fe78189624cf..bb62a4adc328 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -690,7 +690,7 @@ static inline void __zs_cpu_down(struct mapping_area *area)
static inline void *__zs_map_object(struct mapping_area *area,
struct page *pages[2], int off, int size)
{
- BUG_ON(map_vm_area(area->vm, PAGE_KERNEL, &pages));
+ BUG_ON(map_vm_area(area->vm, PAGE_KERNEL, pages));
area->vm_addr = area->vm->addr;
return area->vm_addr + off;
}