diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index d27bc5f9face..f59638448d55 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -14,6 +14,8 @@
 #include <linux/fs.h>
 #include "overlayfs.h"
 
+#define OVL_IOCB_MASK (IOCB_DSYNC | IOCB_HIPRI | IOCB_NOWAIT | IOCB_SYNC)
+
 static char ovl_whatisit(struct inode *inode, struct inode *realinode)
 {
 	if (realinode != ovl_inode_upper(inode))
@@ -213,23 +215,6 @@ static void ovl_file_accessed(struct file *file)
 	touch_atime(&file->f_path);
 }
 
-static rwf_t ovl_iocb_to_rwf(struct kiocb *iocb)
-{
-	int ifl = iocb->ki_flags;
-	rwf_t flags = 0;
-
-	if (ifl & IOCB_NOWAIT)
-		flags |= RWF_NOWAIT;
-	if (ifl & IOCB_HIPRI)
-		flags |= RWF_HIPRI;
-	if (ifl & IOCB_DSYNC)
-		flags |= RWF_DSYNC;
-	if (ifl & IOCB_SYNC)
-		flags |= RWF_SYNC;
-
-	return flags;
-}
-
 static ssize_t ovl_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 {
 	struct file *file = iocb->ki_filp;
@@ -246,7 +231,7 @@ static ssize_t ovl_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 
 	old_cred = ovl_override_creds(file_inode(file)->i_sb);
 	ret = vfs_iter_read(real.file, iter, &iocb->ki_pos,
-			    ovl_iocb_to_rwf(iocb));
+			    iocb_to_rw_flags(iocb->ki_flags, OVL_IOCB_MASK));
 	ovl_revert_creds(file_inode(file)->i_sb, old_cred);
 
 	ovl_file_accessed(file);
@@ -281,7 +266,7 @@ static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter)
 	old_cred = ovl_override_creds(file_inode(file)->i_sb);
 	file_start_write(real.file);
 	ret = vfs_iter_write(real.file, iter, &iocb->ki_pos,
-			     ovl_iocb_to_rwf(iocb));
+			     iocb_to_rw_flags(iocb->ki_flags, OVL_IOCB_MASK));
 	file_end_write(real.file);
 	ovl_revert_creds(file_inode(file)->i_sb, old_cred);
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index da4364318076..a362251bfaa6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3527,6 +3527,11 @@ static inline int kiocb_set_rw_flags(struct kiocb *ki, rwf_t flags)
 	return 0;
 }
 
+static inline rwf_t iocb_to_rw_flags(int ifl, int iocb_mask)
+{
+	return ifl & iocb_mask;
+}
+
 static inline ino_t parent_ino(struct dentry *dentry)
 {
 	ino_t res;