diff options
| author | Arnd Bergmann <arnd@relay.de.ibm.com> | 2010-08-12 04:13:57 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2010-08-12 04:13:57 +0100 |
| commit | 402ab352c2c00ba8f90c724565f8cf31210d99cf (patch) | |
| tree | d24566917708f1624a7af33bc049aa5dfb24e96c /drivers/md/dm-ioctl.c | |
| parent | 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 (diff) | |
| download | linux-402ab352c2c00ba8f90c724565f8cf31210d99cf.tar.gz linux-402ab352c2c00ba8f90c724565f8cf31210d99cf.tar.bz2 linux-402ab352c2c00ba8f90c724565f8cf31210d99cf.zip | |
dm ioctl: use nonseekable_open
The dm control device does not implement read/write, so it has no use for
seeking. Using no_llseek prevents falling back to default_llseek, which
requires the BKL.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-ioctl.c')
| -rw-r--r-- | drivers/md/dm-ioctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index feb64d65fbfb..3fd8f0e169e7 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1602,6 +1602,7 @@ static long dm_compat_ctl_ioctl(struct file *file, uint command, ulong u) #endif static const struct file_operations _ctl_fops = { + .open = nonseekable_open, .unlocked_ioctl = dm_ctl_ioctl, .compat_ioctl = dm_compat_ctl_ioctl, .owner = THIS_MODULE, |