Commit 402ab352 authored Aug 12, 2010 by Arnd Bergmann Committed by Alasdair G Kergon Aug 12, 2010

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>

parent 3f77316d

drivers/md/dm-ioctl.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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,