1 files changed, 25 insertions, 14 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 618e98304080..207464209546 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2269,14 +2269,12 @@ void hugetlb_change_protection(struct vm_area_struct *vma,
 
 int hugetlb_reserve_pages(struct inode *inode,
                                         long from, long to,
-                                        struct vm_area_struct *vma)
+                                        struct vm_area_struct *vma,
+                                        int acctflag)
 {
-        long ret, chg;
+        long ret = 0, chg;
         struct hstate *h = hstate_inode(inode);
 
-        if (vma && vma->vm_flags & VM_NORESERVE)
-                return 0;
-
         /*
          * Shared mappings base their reservation on the number of pages that
          * are already allocated on behalf of the file. Private mappings need
@@ -2285,22 +2283,25 @@ int hugetlb_reserve_pages(struct inode *inode,
          */
         if (!vma || vma->vm_flags & VM_SHARED)
                 chg = region_chg(&inode->i_mapping->private_list, from, to);
-        else {
-                struct resv_map *resv_map = resv_map_alloc();
-                if (!resv_map)
-                        return -ENOMEM;
-
+        else
                 chg = to - from;
 
-                set_vma_resv_map(vma, resv_map);
-                set_vma_resv_flags(vma, HPAGE_RESV_OWNER);
-        }
-
         if (chg < 0)
                 return chg;
 
         if (hugetlb_get_quota(inode->i_mapping, chg))
                 return -ENOSPC;
+
+        /*
+         * Only apply hugepage reservation if asked. We still have to
+         * take the filesystem quota because it is an upper limit
+         * defined for the mount and not necessarily memory as a whole
+         */
+        if (acctflag & VM_NORESERVE) {
+                reset_vma_resv_huge_pages(vma);
+                return 0;
+        }
+
         ret = hugetlb_acct_memory(h, chg);
         if (ret < 0) {
                 hugetlb_put_quota(inode->i_mapping, chg);
@@ -2308,6 +2309,16 @@ int hugetlb_reserve_pages(struct inode *inode,
         }
         if (!vma || vma->vm_flags & VM_SHARED)
                 region_add(&inode->i_mapping->private_list, from, to);
+        else {
+                struct resv_map *resv_map = resv_map_alloc();
+
+                if (!resv_map)
+                        return -ENOMEM;
+
+                set_vma_resv_map(vma, resv_map);
+                set_vma_resv_flags(vma, HPAGE_RESV_OWNER);
+        }
+
         return 0;
 }