From: Wanpeng Li <[email protected]> commit 762216ab4e175f49d17bc7ad778c57b9028184e6 upstream.
Use wrapper function get_vm_area_size to calculate size of vm area. Signed-off-by: Wanpeng Li <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Fengguang Wu <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Yasuaki Ishimatsu <[email protected]> Cc: David Rientjes <[email protected]> Cc: KOSAKI Motohiro <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Wanpeng Li <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Andrey Ryabinin <[email protected]> --- mm/vmalloc.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 7fbc92a..0c531e1 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1285,7 +1285,7 @@ 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); @@ -1605,7 +1605,7 @@ 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; @@ -2037,7 +2037,7 @@ 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) @@ -2047,7 +2047,7 @@ 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)) @@ -2119,7 +2119,7 @@ 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) @@ -2128,7 +2128,7 @@ 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)) { -- 2.4.6 _______________________________________________ Devel mailing list [email protected] https://lists.openvz.org/mailman/listinfo/devel
