linux-kernel - [PATCH, regression] compat_ioctl: ignore RAID

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Message-Id: <201002101614.04387.arnd@arndb.de>
Date:	Wed, 10 Feb 2010 16:14:04 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	"Michael S. Tsirkin" <m.s.tsirkin@...il.com>,
	NeilBrown <neilb@...e.de>
Subject: [PATCH, regression] compat_ioctl: ignore RAID_VERSION ioctl

md ioctls are now handled by the md driver itself, but mdadm
may call RAID_VERSION on other devices as well. Mark the command
as IGNORE_IOCTL so this fails silently rather than printing
an annoying message.

Reported-by: "Michael S. Tsirkin" <m.s.tsirkin@...il.com>
Cc: "Rafael J. Wysocki" <rjw@...k.pl>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/compat_ioctl.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index c5c45de..b6f23b2 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1038,6 +1038,8 @@ COMPATIBLE_IOCTL(FIOQSIZE)
 #ifdef CONFIG_BLOCK
 /* loop */
 IGNORE_IOCTL(LOOP_CLR_FD)
+/* md calls this on random blockdevs */
+IGNORE_IOCTL(RAID_VERSION)
 /* SG stuff */
 COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
 COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
-- 
1.6.3.3

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