1 files changed, 19 insertions, 2 deletions

diff --git a/fs/file_table.c b/fs/file_table.c
index 986ff4ed0a7c..3f73eb1f195a 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -211,6 +211,23 @@ void fput(struct file *file)
 
 EXPORT_SYMBOL(fput);
 
+/**
+ * drop_file_write_access - give up ability to write to a file
+ * @file: the file to which we will stop writing
+ *
+ * This is a central place which will give up the ability
+ * to write to @file, along with access to write through
+ * its vfsmount.
+ */
+void drop_file_write_access(struct file *file)
+{
+        struct dentry *dentry = file->f_path.dentry;
+        struct inode *inode = dentry->d_inode;
+
+        put_write_access(inode);
+}
+EXPORT_SYMBOL_GPL(drop_file_write_access);
+
 /* __fput is called from task context when aio completion releases the last
  * last use of a struct file *.  Do not use otherwise.
  */
@@ -236,10 +253,10 @@ void __fput(struct file *file)
         if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL))
                 cdev_put(inode->i_cdev);
         fops_put(file->f_op);
-        if (file->f_mode & FMODE_WRITE)
-                put_write_access(inode);
         put_pid(file->f_owner.pid);
         file_kill(file);
+        if (file->f_mode & FMODE_WRITE)
+                drop_file_write_access(file);
         file->f_path.dentry = NULL;
         file->f_path.mnt = NULL;
         file_free(file);