From abb78f875f3fcedb88d85eef9f7be7aa474c6727 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 24 Nov 2014 14:46:11 -0500 Subject: new helper: iov_iter_kvec() initialization of kvec-backed iov_iter Signed-off-by: Al Viro --- mm/iov_iter.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'mm/iov_iter.c') diff --git a/mm/iov_iter.c b/mm/iov_iter.c index 1d2cdeb57c58..88c052e63a1d 100644 --- a/mm/iov_iter.c +++ b/mm/iov_iter.c @@ -479,6 +479,19 @@ size_t iov_iter_single_seg_count(const struct iov_iter *i) } EXPORT_SYMBOL(iov_iter_single_seg_count); +void iov_iter_kvec(struct iov_iter *i, int direction, + const struct kvec *iov, unsigned long nr_segs, + size_t count) +{ + BUG_ON(!(direction & ITER_KVEC)); + i->type = direction; + i->kvec = (struct kvec *)iov; + i->nr_segs = nr_segs; + i->iov_offset = 0; + i->count = count; +} +EXPORT_SYMBOL(iov_iter_kvec); + unsigned long iov_iter_alignment(const struct iov_iter *i) { unsigned long res = 0; -- cgit v1.2.3-58-ga151