3 files changed, 21 insertions, 19 deletions

diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 26c888890c24..ce90032c010e 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -251,7 +251,7 @@ static int gfs2_readpage(struct file *file, struct page *page)
                 if (file) {
                         gf = file->private_data;
                         if (test_bit(GFF_EXLOCK, &gf->f_flags))
-                                /* gfs2_sharewrite_nopage has grabbed the ip->i_gl already */
+                                /* gfs2_sharewrite_fault has grabbed the ip->i_gl already */
                                 goto skip_lock;
                 }
                 gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|LM_FLAG_TRY_1CB, &gh);
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index bad0b24cb773..581ac11b2656 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -364,7 +364,7 @@ static int gfs2_mmap(struct file *file, struct vm_area_struct *vma)
         else
                 vma->vm_ops = &gfs2_vm_ops_private;
 
-        vma->vm_flags |= VM_CAN_INVALIDATE;
+        vma->vm_flags |= VM_CAN_INVALIDATE|VM_CAN_NONLINEAR;
 
         gfs2_glock_dq_uninit(&i_gh);
 
diff --git a/fs/gfs2/ops_vm.c b/fs/gfs2/ops_vm.c
index d5a98cbfebdc..e9fe6eb74e75 100644
--- a/fs/gfs2/ops_vm.c
+++ b/fs/gfs2/ops_vm.c
@@ -27,13 +27,13 @@
 #include "trans.h"
 #include "util.h"
 
-static struct page *gfs2_private_nopage(struct vm_area_struct *area,
-                                        unsigned long address, int *type)
+static struct page *gfs2_private_fault(struct vm_area_struct *vma,
+                                        struct fault_data *fdata)
 {
-        struct gfs2_inode *ip = GFS2_I(area->vm_file->f_mapping->host);
+        struct gfs2_inode *ip = GFS2_I(vma->vm_file->f_mapping->host);
 
         set_bit(GIF_PAGED, &ip->i_flags);
-        return filemap_nopage(area, address, type);
+        return filemap_fault(vma, fdata);
 }
 
 static int alloc_page_backing(struct gfs2_inode *ip, struct page *page)
@@ -104,16 +104,14 @@ out:
         return error;
 }
 
-static struct page *gfs2_sharewrite_nopage(struct vm_area_struct *area,
-                                           unsigned long address, int *type)
+static struct page *gfs2_sharewrite_fault(struct vm_area_struct *vma,
+                                                struct fault_data *fdata)
 {
-        struct file *file = area->vm_file;
+        struct file *file = vma->vm_file;
         struct gfs2_file *gf = file->private_data;
         struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
         struct gfs2_holder i_gh;
         struct page *result = NULL;
-        unsigned long index = ((address - area->vm_start) >> PAGE_CACHE_SHIFT) +
-                              area->vm_pgoff;
         int alloc_required;
         int error;
 
@@ -124,23 +122,27 @@ static struct page *gfs2_sharewrite_nopage(struct vm_area_struct *area,
         set_bit(GIF_PAGED, &ip->i_flags);
         set_bit(GIF_SW_PAGED, &ip->i_flags);
 
-        error = gfs2_write_alloc_required(ip, (u64)index << PAGE_CACHE_SHIFT,
-                                          PAGE_CACHE_SIZE, &alloc_required);
-        if (error)
+        error = gfs2_write_alloc_required(ip,
+                                        (u64)fdata->pgoff << PAGE_CACHE_SHIFT,
+                                        PAGE_CACHE_SIZE, &alloc_required);
+        if (error) {
+                fdata->type = VM_FAULT_OOM; /* XXX: are these right? */
                 goto out;
+        }
 
         set_bit(GFF_EXLOCK, &gf->f_flags);
-        result = filemap_nopage(area, address, type);
+        result = filemap_fault(vma, fdata);
         clear_bit(GFF_EXLOCK, &gf->f_flags);
-        if (!result || result == NOPAGE_OOM)
+        if (!result)
                 goto out;
 
         if (alloc_required) {
                 error = alloc_page_backing(ip, result);
                 if (error) {
-                        if (area->vm_flags & VM_CAN_INVALIDATE)
+                        if (vma->vm_flags & VM_CAN_INVALIDATE)
                                 unlock_page(result);
                         page_cache_release(result);
+                        fdata->type = VM_FAULT_OOM;
                         result = NULL;
                         goto out;
                 }
@@ -154,10 +156,10 @@ out:
 }
 
 struct vm_operations_struct gfs2_vm_ops_private = {
-        .nopage = gfs2_private_nopage,
+        .fault = gfs2_private_fault,
 };
 
 struct vm_operations_struct gfs2_vm_ops_sharewrite = {
-        .nopage = gfs2_sharewrite_nopage,
+        .fault = gfs2_sharewrite_fault,
 };