Commit 762216ab authored by Wanpeng Li's avatar Wanpeng Li Committed by Linus Torvalds
Browse files

mm/vmalloc: use wrapper function get_vm_area_size to caculate size of vm area 



Use wrapper function get_vm_area_size to calculate size of vm area.

Signed-off-by: default avatarWanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7d9f073b

mm/vmalloc.c

+6 −6
Original line number Diff line number Diff line
@@ -1258,7 +1258,7 @@ void unmap_kernel_range(unsigned long addr, unsigned long size) 
int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)

{

	unsigned long addr = (unsigned long)area->addr;

	unsigned long end = addr + area->size - PAGE_SIZE;

	unsigned long end = addr + get_vm_area_size(area);

	int err;



	err = vmap_page_range(addr, end, prot, *pages);
@@ -1553,7 +1553,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, 
	unsigned int nr_pages, array_size, i;

	gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;



	nr_pages = (area->size - PAGE_SIZE) >> PAGE_SHIFT;

	nr_pages = get_vm_area_size(area) >> PAGE_SHIFT;

	array_size = (nr_pages * sizeof(struct page *));



	area->nr_pages = nr_pages;
@@ -1985,7 +1985,7 @@ long vread(char *buf, char *addr, unsigned long count) 


		vm = va->vm;

		vaddr = (char *) vm->addr;

		if (addr >= vaddr + vm->size - PAGE_SIZE)

		if (addr >= vaddr + get_vm_area_size(vm))

			continue;

		while (addr < vaddr) {

			if (count == 0)
@@ -1995,7 +1995,7 @@ long vread(char *buf, char *addr, unsigned long count) 
			addr++;

			count--;

		}

		n = vaddr + vm->size - PAGE_SIZE - addr;

		n = vaddr + get_vm_area_size(vm) - addr;

		if (n > count)

			n = count;

		if (!(vm->flags & VM_IOREMAP))
@@ -2067,7 +2067,7 @@ long vwrite(char *buf, char *addr, unsigned long count) 


		vm = va->vm;

		vaddr = (char *) vm->addr;

		if (addr >= vaddr + vm->size - PAGE_SIZE)

		if (addr >= vaddr + get_vm_area_size(vm))

			continue;

		while (addr < vaddr) {

			if (count == 0)
@@ -2076,7 +2076,7 @@ long vwrite(char *buf, char *addr, unsigned long count) 
			addr++;

			count--;

		}

		n = vaddr + vm->size - PAGE_SIZE - addr;

		n = vaddr + get_vm_area_size(vm) - addr;

		if (n > count)

			n = count;

		if (!(vm->flags & VM_IOREMAP)) {

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