fs/kernel_read_file.c | 6 +++++-
 include/linux/fs.h    | 6 ++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/fs/kernel_read_file.c b/fs/kernel_read_file.c
index 5d826274570c..ff3e894f8cd4 100644
--- a/fs/kernel_read_file.c
+++ b/fs/kernel_read_file.c
@@ -48,7 +48,11 @@ ssize_t kernel_read_file(struct file *file, loff_t offset, void **buf,
 	if (!S_ISREG(file_inode(file)->i_mode))
 		return -EINVAL;
 
-	ret = deny_write_access(file);
+	/* Module reading wants *exclusive* access to the file */
+	if (id == READING_MODULE)
+		ret = exclusive_deny_write_access(file);
+	else
+		ret = deny_write_access(file);
 	if (ret)
 		return ret;
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 21a981680856..722b42a77d51 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2566,6 +2566,12 @@ static inline int deny_write_access(struct file *file)
 	struct inode *inode = file_inode(file);
 	return atomic_dec_unless_positive(&inode->i_writecount) ? 0 : -ETXTBSY;
 }
+static inline int exclusive_deny_write_access(struct file *file)
+{
+	int old = 0;
+	struct inode *inode = file_inode(file);
+	return atomic_try_cmpxchg(&inode->i_writecount, &old, -1) ? 0 : -ETXTBSY;
+}
 static inline void put_write_access(struct inode * inode)
 {
 	atomic_dec(&inode->i_writecount);