1 files changed, 53 insertions, 0 deletions
diff --git a/fs/smb/client/splice.h b/fs/smb/client/splice.h
new file mode 100644
index 000000000000..6c88402bb489
--- /dev/null
+++ b/fs/smb/client/splice.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) SUSE 2024
+ * Author(s): Enzo Matsumiya <ematsumiya@suse.de>
+ *
+ * Splice support for cifs.ko
+ */
+#ifndef _CIFS_SPLICE_H
+#define _CIFS_SPLICE_H
+
+#include <linux/pagevec.h>
+#include <linux/fs.h>
+#include <linux/pipe_fs_i.h>
+
+/**
+ * cifs_splice_read -  Splice data from a file's pagecache into a pipe
+ * @in: The file to read from
+ * @ppos: Pointer to the file position to read from
+ * @pipe: The pipe to splice into
+ * @len: The amount to splice
+ * @flags: The SPLICE_F_* flags
+ *
+ * This function gets folios from a file's pagecache and splices them into the
+ * pipe.  Readahead will be called as necessary to fill more folios.  This may
+ * be used for blockdevs also.
+ *
+ * Return: On success, the number of bytes read will be returned and *@ppos
+ * will be updated if appropriate; 0 will be returned if there is no more data
+ * to be read; -EAGAIN will be returned if the pipe had no space, and some
+ * other negative error code will be returned on error.  A short read may occur
+ * if the pipe has insufficient space, we reach the end of the data or we hit a
+ * hole.
+ */
+ssize_t cifs_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe,
+			 size_t len, unsigned int flags);
+
+/**
+ * cifs_splice_write - splice data from a pipe to a file
+ * @pipe:	pipe info
+ * @out:	file to write to
+ * @ppos:	position in @out
+ * @len:	number of bytes to splice
+ * @flags:	splice modifier flags
+ *
+ * Description:
+ *    Will either move or copy pages (determined by @flags options) from
+ *    the given pipe inode to the given file.
+ *    This one is ->write_iter-based.
+ *
+ */
+ssize_t cifs_splice_write(struct pipe_inode_info *pipe, struct file *out, loff_t *ppos,
+			  size_t len, unsigned int flags);
+#endif /* !_CIFS_SPLICE_H */