fs: nfs: Adding new return type vm_fault_t

Use new return type vm_fault_t for fault handler
in struct vm_operations_struct. For now, this is
just documenting that the function returns a
VM_FAULT value rather than an errno.  Once all
instances are converted, vm_fault_t will become
a distinct type.

see commit 1c8f422059ae ("mm: change return type to
vm_fault_t") for reference.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 81cca49a837506a5abff4d25447e4f4a9484b3b3..29553fdba8af7ec61c11a19bfaeb8be4a7b0ddb4 100644 (file)
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -532,13 +532,13 @@ const struct address_space_operations nfs_file_aops = {
  * writable, implying that someone is about to modify the page through a
  * shared-writable mapping
  */
-static int nfs_vm_page_mkwrite(struct vm_fault *vmf)
+static vm_fault_t nfs_vm_page_mkwrite(struct vm_fault *vmf)
 {
        struct page *page = vmf->page;
        struct file *filp = vmf->vma->vm_file;
        struct inode *inode = file_inode(filp);
        unsigned pagelen;
-       int ret = VM_FAULT_NOPAGE;
+       vm_fault_t ret = VM_FAULT_NOPAGE;
        struct address_space *mapping;
 
        dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%pD2(%lu), offset %lld)\n",