vfs: mnt_drop_write_file()
new helper (wrapper around mnt_drop_write()) to be used in pair with
mnt_want_write_file().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namespace.c b/fs/namespace.c
index 7a8f949..86b4f64 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -392,6 +392,12 @@
}
EXPORT_SYMBOL_GPL(mnt_drop_write);
+void mnt_drop_write_file(struct file *file)
+{
+ mnt_drop_write(file->f_path.mnt);
+}
+EXPORT_SYMBOL(mnt_drop_write_file);
+
static int mnt_make_readonly(struct vfsmount *mnt)
{
int ret = 0;