Johannes Stezenbach 390192b300
compat_ioctl: fix warning caused by qemu ...
On Linux x86_64 host with 32bit userspace, running
qemu or even just "qemu-img create -f qcow2 some.img 1G"
causes a kernel warning:
ioctl32(qemu-img:5296): Unknown cmd fd(3) cmd(00005326){t:'S';sz:0} arg(7fffffff) on some.img
ioctl32(qemu-img:5296): Unknown cmd fd(3) cmd(801c0204){t:02;sz:28} arg(fff77350) on some.img
ioctl 00005326 is CDROM_DRIVE_STATUS,
ioctl 801c0204 is FDGETPRM.
The warning appears because the Linux compat-ioctl handler for these
ioctls only applies to block devices, while qemu also uses the ioctls on
plain files.
Signed-off-by: Johannes Stezenbach <js@sig21.net >
Acked-by: Arnd Bergmann <arnd@arndb.de >
Signed-off-by: Jens Axboe <jaxboe@fusionio.com >
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Johannes Stezenbach
390192b300