From e03ad4ee2783e41afc90cc7848468aef10741c0e Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 24 Mar 2023 14:35:49 -0600 Subject: [PATCH] iov_iter: convert import_single_range() to ITER_UBUF Since we're just importing a single vector, we don't have to turn it into an ITER_IOVEC. Instead turn it into an ITER_UBUF, which is cheaper to iterate. Signed-off-by: Jens Axboe --- lib/iov_iter.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 87488c4aad3f..f411bda1171f 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1870,9 +1870,7 @@ int import_single_range(int rw, void __user *buf, size_t len, if (unlikely(!access_ok(buf, len))) return -EFAULT; - iov->iov_base = buf; - iov->iov_len = len; - iov_iter_init(i, rw, iov, 1, len); + iov_iter_ubuf(i, rw, buf, len); return 0; } EXPORT_SYMBOL(import_single_range);