From 4fa55cefee1bbecadb4c9f47d40a92f65dc44351 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 29 Apr 2017 16:42:30 -0400
Subject: [PATCH] fix a braino in ITER_PIPE iov_iter_revert()
Fixes: 27c0e3748e41
Tested-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
lib/iov_iter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 60abc44385b79..cc001a542cb55 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -798,7 +798,7 @@ void iov_iter_revert(struct iov_iter *i, size_t unroll)
while (1) {
size_t n = off - pipe->bufs[idx].offset;
if (unroll < n) {
- off -= (n - unroll);
+ off -= unroll;
break;
}
unroll -= n;
--
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