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authorFrederic Weisbecker <fweisbec@gmail.com>2010-03-30 07:32:50 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-05-17 03:06:24 +0200
commitc2f980500a81006173daf3048284b28832858616 (patch)
treedb8aa6354bd8393f0e2033ec04c532b72b9b0d37 /fs/proc
parentd79b6f4de5db0103ceb4734e42ad101d836d61d9 (diff)
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>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/inode.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 445a02bcaab..afcda8588e1 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -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);