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authorJohannes Stezenbach <js@sig21.net>2011-07-01 22:32:26 +0200
committerJens Axboe <jaxboe@fusionio.com>2011-07-01 22:32:26 +0200
commit390192b300570b2bc721d77067ca133f58015ae8 (patch)
treebacbd75f23e74308b814146338bcaa6b3636bae7 /block/blk-lib.c
parent85ef06d1d252f6a2e73b678591ab71caad4667bb (diff)
downloadlinux-linaro-stable-390192b300570b2bc721d77067ca133f58015ae8.tar.gz
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>
Diffstat (limited to 'block/blk-lib.c')
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