linux-kernel - [PATCH 01/25] iov_iter: Export import

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Message-Id: <20230814115523.15279-2-tiwai@suse.de>
Date:   Mon, 14 Aug 2023 13:54:59 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     alsa-devel@...a-project.org
Cc:     linux-kernel@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: [PATCH 01/25] iov_iter: Export import_ubuf()

Export import_ubuf() to be used in sound subsystem for generic memory
handling as Linus suggested.  It's used for constructing an iov_iter
of a single segment user-space copy for PCM data.

Cc: Alexander Viro <viro@...iv.linux.org.uk>
Link: https://lore.kernel.org/r/CAHk-=wh-mUL6mp4chAc6E_UjwpPLyCPRCJK+iB4ZMD2BqjwGHA@mail.gmail.com
Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 lib/iov_iter.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index e4dc809d1075..3743bbcbbb89 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1544,6 +1544,7 @@ int import_ubuf(int rw, void __user *buf, size_t len, struct iov_iter *i)
 	iov_iter_ubuf(i, rw, buf, len);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(import_ubuf);
 
 /**
  * iov_iter_restore() - Restore a &struct iov_iter to the same state as when
-- 
2.35.3