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kfifo: move out spinlock

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Move the pointer to the spinlock out of struct kfifo.  Most users in
tree do not actually use a spinlock, so the few exceptions now have to
call kfifo_{get,put}_locked, which takes an extra argument to a
spinlock.

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Stefani Seibold
2009-12-21 14:37:27 -08:00
committed by Linus Torvalds
parent 4546548789
commit c1e13f2567
16 changed files with 132 additions and 131 deletions
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6
net/dccp/probe.c
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@@ -67,7 +67,7 @@ static void printl(const char *fmt, ...)
len += vscnprintf(tbuf+len, sizeof(tbuf)-len, fmt, args);
va_end(args);
kfifo_put(&dccpw.fifo, tbuf, len);
kfifo_put_locked(&dccpw.fifo, tbuf, len, &dccpw.lock);
wake_up(&dccpw.wait);
}
@@ -135,7 +135,7 @@ static ssize_t dccpprobe_read(struct file *file, char __user *buf,
if (error)
goto out_free;
cnt = kfifo_get(&dccpw.fifo, tbuf, len);
cnt = kfifo_get_locked(&dccpw.fifo, tbuf, len, &dccpw.lock);
error = copy_to_user(buf, tbuf, cnt) ? -EFAULT : 0;
out_free:
@@ -156,7 +156,7 @@ static __init int dccpprobe_init(void)
init_waitqueue_head(&dccpw.wait);
spin_lock_init(&dccpw.lock);
if (kfifo_alloc(&dccpw.fifo, bufsize, GFP_KERNEL, &dccpw.lock))
if (kfifo_alloc(&dccpw.fifo, bufsize, GFP_KERNEL))
return ret;
if (!proc_net_fops_create(&init_net, procname, S_IRUSR, &dccpprobe_fops))
goto err0;