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procfs: Kill the bkl in ioctl 

There are no more users of procfs that implement the ioctl
callback. Drop the bkl from this path and warn on any use
of this callback.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: John Kacur <jkacur@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
This commit is contained in:
Frederic Weisbecker 2010-03-30 07:32:50 +02:00
parent d79b6f4de5
commit c2f980500a
1 changed files with 2 additions and 2 deletions
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4
fs/proc/inode.c
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@ -231,9 +231,9 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
if (rv == -ENOIOCTLCMD)
rv = -EINVAL;
} else if (ioctl) {
lock_kernel();
WARN_ONCE(1, "Procfs ioctl handlers must use unlocked_ioctl, "
"%pf will be called without the Bkl held\n", ioctl);
rv = ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
unlock_kernel();
}
pde_users_dec(pde);