linux-kernel - [PATCH 06/17] splice: Export filemap/direct_splice

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Date:   Thu, 16 Feb 2023 21:47:34 +0000
From:   David Howells <dhowells@...hat.com>
To:     Steve French <smfrench@...il.com>
Cc:     David Howells <dhowells@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Al Viro <viro@...iv.linux.org.uk>,
        Shyam Prasad N <nspmangalore@...il.com>,
        Rohith Surabattula <rohiths.msft@...il.com>,
        Tom Talpey <tom@...pey.com>,
        Stefan Metzmacher <metze@...ba.org>,
        Christoph Hellwig <hch@...radead.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jeff Layton <jlayton@...nel.org>, linux-cifs@...r.kernel.org,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Steve French <sfrench@...ba.org>,
        Christoph Hellwig <hch@....de>,
        David Hildenbrand <david@...hat.com>,
        John Hubbard <jhubbard@...dia.com>
Subject: [PATCH 06/17] splice: Export filemap/direct_splice_read()

filemap_splice_read() and direct_splice_read() should be exported.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Steve French <sfrench@...ba.org>
cc: Jens Axboe <axboe@...nel.dk>
cc: Christoph Hellwig <hch@....de>
cc: Al Viro <viro@...iv.linux.org.uk>
cc: David Hildenbrand <david@...hat.com>
cc: John Hubbard <jhubbard@...dia.com>
cc: linux-cifs@...r.kernel.org
cc: linux-mm@...ck.org
cc: linux-block@...r.kernel.org
cc: linux-fsdevel@...r.kernel.org
---
 fs/splice.c  | 1 +
 mm/filemap.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/splice.c b/fs/splice.c
index 4c6332854b63..928c7be2f318 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -373,6 +373,7 @@ ssize_t direct_splice_read(struct file *in, loff_t *ppos,
 	kfree(bv);
 	return ret;
 }
+EXPORT_SYMBOL(direct_splice_read);
 
 /**
  * generic_file_splice_read - splice data from file to a pipe
diff --git a/mm/filemap.c b/mm/filemap.c
index 8c7b135c8e23..570f86578f7c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2969,6 +2969,7 @@ ssize_t filemap_splice_read(struct file *in, loff_t *ppos,
 
 	return total_spliced ? total_spliced : error;
 }
+EXPORT_SYMBOL(filemap_splice_read);
 
 static inline loff_t folio_seek_hole_data(struct xa_state *xas,
 		struct address_space *mapping, struct folio *folio,