From 5f34cc454df420b9b2da8deb949fb76cba058b87 Mon Sep 17 00:00:00 2001
From: Ferruh Yigit <ferruh.yigit@amd.com>
Date: Fri, 14 Apr 2023 16:25:22 +0100
Subject: [PATCH] kni: fix build with Linux 6.3

KNI calls `get_user_pages_remote()` API which is using `FOLL_TOUCH`
flag, but `FOLL_TOUCH` is no more in public headers since v6.3,
causing a build error.

`FOLL_*` defines in Linux kernel first moved to another header [1],
later some of them moved to memory subsystem internal header [2] for 6.3

`get_user_pages_remote()` already sets `FOLL_TOUCH` internally,
no need to set this flag externally anyway, moving flag from the call
altogether.

[1]
Commit b5054174ac7c ("mm: move FOLL_* defs to mm_types.h")

[2]
Commit 2c2241081f7d ("mm/gup: move private gup FOLL_ flags to internal.h")

Fixes: e73831dc6c26 ("kni: support userspace VA")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@amd.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
---
 kernel/linux/kni/kni_dev.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/linux/kni/kni_dev.h b/kernel/linux/kni/kni_dev.h
index a2c6d9fc1a..21bfb6890e 100644
--- a/kernel/linux/kni/kni_dev.h
+++ b/kernel/linux/kni/kni_dev.h
@@ -105,11 +105,9 @@ static inline phys_addr_t iova_to_phys(struct task_struct *tsk,
 
 	/* Read one page struct info */
 #ifdef HAVE_TSK_IN_GUP
-	ret = get_user_pages_remote(tsk, tsk->mm, iova, 1,
-				    FOLL_TOUCH, &page, NULL, NULL);
+	ret = get_user_pages_remote(tsk, tsk->mm, iova, 1, 0, &page, NULL, NULL);
 #else
-	ret = get_user_pages_remote(tsk->mm, iova, 1,
-				    FOLL_TOUCH, &page, NULL, NULL);
+	ret = get_user_pages_remote(tsk->mm, iova, 1, 0, &page, NULL, NULL);
 #endif
 	if (ret < 0)
 		return 0;
-- 
2.23.0