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List:       linux-aio
Subject:    [PATCHv2 08/12] tracing/user_events: use iter_ubuf for single range
From:       Keith Busch <kbusch () meta ! com>
Date:       2023-01-05 19:07:37
Message-ID: 20230105190741.2405013-9-kbusch () meta ! com
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From: Keith Busch <kbusch@kernel.org>

This is more efficient that iter_iov.

Signed-off-by: Keith Busch <kbusch@kernel.org>
---
 kernel/trace/trace_events_user.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index 908e8a13c675b..2b0ab417cf913 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -1483,14 +1483,12 @@ static int user_events_open(struct inode *node, struct file *file)
 static ssize_t user_events_write(struct file *file, const char __user *ubuf,
 				 size_t count, loff_t *ppos)
 {
-	struct iovec iov;
 	struct iov_iter i;
 
 	if (unlikely(*ppos != 0))
 		return -EFAULT;
 
-	if (unlikely(import_single_range(ITER_SOURCE, (char __user *)ubuf,
-					 count, &iov, &i)))
+	if (unlikely(import_ubuf(ITER_SOURCE, (char __user *)ubuf, count, &i)))
 		return -EFAULT;
 
 	return user_events_write_core(file, &i);
-- 
2.30.2


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