[PATCH 04/11] iov_iter: explicitly check for CHECK_IOVEC_ONLY in rw_copy_check_uvector

[Christoph Hellwig]

Explicitly check for the magic value insted of implicitly relying on
its numeric representation.   Also drop the rather pointless unlikely
annotation.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 lib/iov_iter.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index d7e72343c360eb..a64867501a7483 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1709,8 +1709,7 @@ static ssize_t rw_copy_check_uvector(int type,
 			ret = -EINVAL;
 			goto out;
 		}
-		if (type >= 0
-		    && unlikely(!access_ok(buf, len))) {
+		if (type != CHECK_IOVEC_ONLY && !access_ok(buf, len)) {
 			ret = -EFAULT;
 			goto out;
 		}
@@ -1824,7 +1823,7 @@ static ssize_t compat_rw_copy_check_uvector(int type,
 		}
 		if (len < 0)	/* size_t not fitting in compat_ssize_t .. */
 			goto out;
-		if (type >= 0 &&
+		if (type != CHECK_IOVEC_ONLY &&
 		    !access_ok(compat_ptr(buf), len)) {
 			ret = -EFAULT;
 			goto out;
-- 
2.28.0