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[01/25] iov_iter: Export import_ubuf()

Message ID 20230814115523.15279-2-tiwai@suse.de
State Superseded
Headers show
Series ALSA: Generic PCM copy ops using iov_iter | expand

Commit Message

Takashi Iwai Aug. 14, 2023, 11:54 a.m. UTC 
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@zeniv.linux.org.uk>
Link: https://lore.kernel.org/r/CAHk-=wh-mUL6mp4chAc6E_UjwpPLyCPRCJK+iB4ZMD2BqjwGHA@mail.gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 lib/iov_iter.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

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