1 files changed, 4 insertions, 2 deletions

diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 213ca1f53409..13e013b1270c 100644
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -304,6 +304,7 @@ out:
 
 static const struct vm_operations_struct xip_file_vm_ops = {
         .fault  = xip_file_fault,
+        .page_mkwrite   = filemap_page_mkwrite,
 };
 
 int xip_file_mmap(struct file * file, struct vm_area_struct * vma)
@@ -401,6 +402,8 @@ xip_file_write(struct file *filp, const char __user *buf, size_t len,
         loff_t pos;
         ssize_t ret;
 
+        sb_start_write(inode->i_sb);
+
         mutex_lock(&inode->i_mutex);
 
         if (!access_ok(VERIFY_READ, buf, len)) {
@@ -411,8 +414,6 @@ xip_file_write(struct file *filp, const char __user *buf, size_t len,
         pos = *ppos;
         count = len;
 
-        vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
-
         /* We can write back this queue in page reclaim */
         current->backing_dev_info = mapping->backing_dev_info;
 
@@ -436,6 +437,7 @@ xip_file_write(struct file *filp, const char __user *buf, size_t len,
         current->backing_dev_info = NULL;
  out_up:
         mutex_unlock(&inode->i_mutex);
+        sb_end_write(inode->i_sb);
         return ret;
 }
 EXPORT_SYMBOL_GPL(xip_file_write);