diff --git a/fs/sync.c b/fs/sync.c
index b54e0541ad89..01e82170545a 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -234,6 +234,77 @@ SYSCALL_DEFINE1(fdatasync, unsigned int, fd)
 	return do_fsync(fd, 1);
 }
 
+int sync_file_range(struct file *file, loff_t offset, loff_t nbytes,
+		    unsigned int flags)
+{
+	int ret;
+	struct address_space *mapping;
+	loff_t endbyte;			/* inclusive */
+	umode_t i_mode;
+
+	ret = -EINVAL;
+	if (flags & ~VALID_FLAGS)
+		goto out;
+
+	endbyte = offset + nbytes;
+
+	if ((s64)offset < 0)
+		goto out;
+	if ((s64)endbyte < 0)
+		goto out;
+	if (endbyte < offset)
+		goto out;
+
+	if (sizeof(pgoff_t) == 4) {
+		if (offset >= (0x100000000ULL << PAGE_SHIFT)) {
+			/*
+			 * The range starts outside a 32 bit machine's
+			 * pagecache addressing capabilities.  Let it "succeed"
+			 */
+			ret = 0;
+			goto out;
+		}
+		if (endbyte >= (0x100000000ULL << PAGE_SHIFT)) {
+			/*
+			 * Out to EOF
+			 */
+			nbytes = 0;
+		}
+	}
+
+	if (nbytes == 0)
+		endbyte = LLONG_MAX;
+	else
+		endbyte--;		/* inclusive */
+
+	i_mode = file_inode(file)->i_mode;
+	ret = -ESPIPE;
+	if (!S_ISREG(i_mode) && !S_ISBLK(i_mode) && !S_ISDIR(i_mode) &&
+			!S_ISLNK(i_mode))
+		goto out;
+
+	mapping = file->f_mapping;
+	ret = 0;
+	if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
+		ret = file_fdatawait_range(file, offset, endbyte);
+		if (ret < 0)
+			goto out;
+	}
+
+	if (flags & SYNC_FILE_RANGE_WRITE) {
+		ret = __filemap_fdatawrite_range(mapping, offset, endbyte,
+						 WB_SYNC_NONE);
+		if (ret < 0)
+			goto out;
+	}
+
+	if (flags & SYNC_FILE_RANGE_WAIT_AFTER)
+		ret = file_fdatawait_range(file, offset, endbyte);
+
+out:
+	return ret;
+}
+
 /*
  * sys_sync_file_range() permits finely controlled syncing over a segment of
  * a file in the range offset .. (offset+nbytes-1) inclusive.  If nbytes is
@@ -286,77 +357,13 @@ int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
 {
 	int ret;
 	struct fd f;
-	struct address_space *mapping;
-	loff_t endbyte;			/* inclusive */
-	umode_t i_mode;
-
-	ret = -EINVAL;
-	if (flags & ~VALID_FLAGS)
-		goto out;
-
-	endbyte = offset + nbytes;
-
-	if ((s64)offset < 0)
-		goto out;
-	if ((s64)endbyte < 0)
-		goto out;
-	if (endbyte < offset)
-		goto out;
-
-	if (sizeof(pgoff_t) == 4) {
-		if (offset >= (0x100000000ULL << PAGE_SHIFT)) {
-			/*
-			 * The range starts outside a 32 bit machine's
-			 * pagecache addressing capabilities.  Let it "succeed"
-			 */
-			ret = 0;
-			goto out;
-		}
-		if (endbyte >= (0x100000000ULL << PAGE_SHIFT)) {
-			/*
-			 * Out to EOF
-			 */
-			nbytes = 0;
-		}
-	}
-
-	if (nbytes == 0)
-		endbyte = LLONG_MAX;
-	else
-		endbyte--;		/* inclusive */
 
 	ret = -EBADF;
 	f = fdget(fd);
-	if (!f.file)
-		goto out;
+	if (f.file)
+		ret = sync_file_range(f.file, offset, nbytes, flags);
 
-	i_mode = file_inode(f.file)->i_mode;
-	ret = -ESPIPE;
-	if (!S_ISREG(i_mode) && !S_ISBLK(i_mode) && !S_ISDIR(i_mode) &&
-			!S_ISLNK(i_mode))
-		goto out_put;
-
-	mapping = f.file->f_mapping;
-	ret = 0;
-	if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
-		ret = file_fdatawait_range(f.file, offset, endbyte);
-		if (ret < 0)
-			goto out_put;
-	}
-
-	if (flags & SYNC_FILE_RANGE_WRITE) {
-		ret = __filemap_fdatawrite_range(mapping, offset, endbyte,
-						 WB_SYNC_NONE);
-		if (ret < 0)
-			goto out_put;
-	}
-
-	if (flags & SYNC_FILE_RANGE_WAIT_AFTER)
-		ret = file_fdatawait_range(f.file, offset, endbyte);
-
-out_put:
 	fdput(f);
-out:
 	return ret;
 }
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index dd28e7679089..2f66e247ecba 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2785,6 +2785,9 @@ extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
 			   int datasync);
 extern int vfs_fsync(struct file *file, int datasync);
 
+extern int sync_file_range(struct file *file, loff_t offset, loff_t nbytes,
+				unsigned int flags);
+
 /*
  * Sync the bytes written if this was a synchronous write.  Expect ki_pos
  * to already be updated for the write, and will return either the amount