lib/zlib: add s390 hardware support for kernel zlib_deflate

[linux-2.6-microblaze.git] / mm / madvise.c

diff --git a/mm/madvise.c b/mm/madvise.c
index 94c343b..43b47d3 100644 (file)
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -864,13 +864,13 @@ static int madvise_inject_error(int behavior,
 {
        struct page *page;
        struct zone *zone;
-       unsigned int order;
+       unsigned long size;
 
        if (!capable(CAP_SYS_ADMIN))
                return -EPERM;
 
 
-       for (; start < end; start += PAGE_SIZE << order) {
+       for (; start < end; start += size) {
                unsigned long pfn;
                int ret;
 
@@ -882,9 +882,9 @@ static int madvise_inject_error(int behavior,
                /*
                 * When soft offlining hugepages, after migrating the page
                 * we dissolve it, therefore in the second loop "page" will
-                * no longer be a compound page, and order will be 0.
+                * no longer be a compound page.
                 */
-               order = compound_order(compound_head(page));
+               size = page_size(compound_head(page));
 
                if (PageHWPoison(page)) {
                        put_page(page);
@@ -895,7 +895,7 @@ static int madvise_inject_error(int behavior,
                        pr_info("Soft offlining pfn %#lx at process virtual address %#lx\n",
                                        pfn, start);
 
-                       ret = soft_offline_page(page, MF_COUNT_INCREASED);
+                       ret = soft_offline_page(pfn, MF_COUNT_INCREASED);
                        if (ret)
                                return ret;
                        continue;
@@ -1044,7 +1044,7 @@ madvise_behavior_valid(int behavior)
  *  -EBADF  - map exists, but area maps something that isn't a file.
  *  -EAGAIN - a kernel resource was temporarily unavailable.
  */
-SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
+int do_madvise(unsigned long start, size_t len_in, int behavior)
 {
        unsigned long end, tmp;
        struct vm_area_struct *vma, *prev;
@@ -1059,9 +1059,9 @@ SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
        if (!madvise_behavior_valid(behavior))
                return error;
 
-       if (start & ~PAGE_MASK)
+       if (!PAGE_ALIGNED(start))
                return error;
-       len = (len_in + ~PAGE_MASK) & PAGE_MASK;
+       len = PAGE_ALIGN(len_in);
 
        /* Check to see whether len was rounded up from small -ve to zero */
        if (len_in && !len)
@@ -1141,3 +1141,8 @@ out:
 
        return error;
 }
+
+SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
+{
+       return do_madvise(start, len_in, behavior);
+}