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-rw-r--r--fs/namespace.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 7a8f949cec1..86b4f640647 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -392,6 +392,12 @@ void mnt_drop_write(struct vfsmount *mnt)
}
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;