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| author | Johannes Stezenbach <js@sig21.net> | 2011-07-01 22:32:26 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-07-01 22:32:26 +0200 |
| commit | 390192b300570b2bc721d77067ca133f58015ae8 (patch) | |
| tree | bacbd75f23e74308b814146338bcaa6b3636bae7 /README | |
| parent | 85ef06d1d252f6a2e73b678591ab71caad4667bb (diff) | |
| download | linux-390192b300570b2bc721d77067ca133f58015ae8.tar.bz2 | |
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 'README')
0 files changed, 0 insertions, 0 deletions