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iov_iter: Export import_ubuf()
author
Takashi Iwai
<tiwai@suse.de>
Tue, 15 Aug 2023 19:01:12 +0000
(21:01 +0200)
committer
Takashi Iwai
<tiwai@suse.de>
Fri, 18 Aug 2023 10:18:15 +0000
(12:18 +0200)
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
Link:
https://lore.kernel.org/r/20230815190136.8987-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
lib/iov_iter.c
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diff --git
a/lib/iov_iter.c
b/lib/iov_iter.c
index
e4dc809
..
3743bbc
100644
(file)
--- 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