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[dm-devel] 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.

Signed-off-by: Arnd Bergmann <arnd arndb de>

On Saturday 30 January 2010, Michael S. Tsirkin wrote:
> Under 2.6.33-rcX (at least rc5 and rc6, didn't check earlier versions),
> I started seeing these messages in dmesg (I do not see these messages on 2.6.32):
> [   16.528951] ioctl32(mdadm:2243): Unknown cmd fd(3) cmd(800c0910){t:09;sz:12} arg(ffb7f9c4) on /dev/sda9

Does this help?

--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1038,6 +1038,8 @@ COMPATIBLE_IOCTL(FIOQSIZE)
 /* loop */
+/* md calls this on random blockdevs */
 /* SG stuff */

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