linux-kernel - [PATCH] samples/vfs: add __SANE_USERSPACE_TYPES_

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Message-Id: <20241219-statmount-v1-1-9fd8eab3cf0c@kernel.org>
Date: Thu, 19 Dec 2024 17:11:40 -0500
From: Jeff Layton <jlayton@...nel.org>
To: Christian Brauner <brauner@...nel.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>, linux-fsdevel@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH] samples/vfs: add __SANE_USERSPACE_TYPES__ to mountinfo
 program

mountinfo.c is throwing compiler warnings on ppc64. The comment over
__SANE_USERSPACE_TYPES__ says:

 * This is here because we used to use l64 for 64bit powerpc
 * and we don't want to impact user mode with our change to ll64
 * in the kernel.
 *
 * However, some user programs are fine with this.  They can
 * flag __SANE_USERSPACE_TYPES__ to get int-ll64.h here.

That is the case with mountinfo.c, so define it.

Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Closes: https://lore.kernel.org/all/20241211143701.5cfc95a7@canb.auug.org.au/
Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
Feel free to fold this into an earlier patch if that's easier. Also, I
wonder if samples/vfs/test-list-all-mounts.c needs similar treatment?
---
 samples/vfs/mountinfo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/samples/vfs/mountinfo.c b/samples/vfs/mountinfo.c
index 349aaade4de53912b96eadb35bf1b7457b4b04fa..2b17d244d321ee759543cefa3c9e84e7cd489c9a 100644
--- a/samples/vfs/mountinfo.c
+++ b/samples/vfs/mountinfo.c
@@ -5,6 +5,7 @@
  * contents of /proc/self/mountinfo.
  */
 #define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__
 #include <stdio.h>
 #include <stdint.h>
 #include <sys/ioctl.h>

---
base-commit: ef5bbd2a286805b0f97b5fa8616d28a84336ee7b
change-id: 20241219-statmount-002351a3aa68

Best regards,
-- 
Jeff Layton <jlayton@...nel.org>