Commit bf53d6f8 authored by Christoph Lameter's avatar Christoph Lameter Committed by Linus Torvalds

vmalloc: clean up page array indexing

The page array is repeatedly indexed both in vunmap and vmalloc_area_node().
Add a temporary variable to make it easier to read (and easier to patch
later).
Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9e2779fa
......@@ -384,8 +384,10 @@ static void __vunmap(const void *addr, int deallocate_pages)
int i;
for (i = 0; i < area->nr_pages; i++) {
BUG_ON(!area->pages[i]);
__free_page(area->pages[i]);
struct page *page = area->pages[i];
BUG_ON(!page);
__free_page(page);
}
if (area->flags & VM_VPAGES)
......@@ -489,15 +491,19 @@ void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
}
for (i = 0; i < area->nr_pages; i++) {
struct page *page;
if (node < 0)
area->pages[i] = alloc_page(gfp_mask);
page = alloc_page(gfp_mask);
else
area->pages[i] = alloc_pages_node(node, gfp_mask, 0);
if (unlikely(!area->pages[i])) {
page = alloc_pages_node(node, gfp_mask, 0);
if (unlikely(!page)) {
/* Successfully allocated i pages, free them in __vunmap() */
area->nr_pages = i;
goto fail;
}
area->pages[i] = page;
}
if (map_vm_area(area, prot, &pages))
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment