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samples: use non-racy method for /proc/marker-example creation

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Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to
main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Denis V. Lunev 2008-04-29 01:02:16 -07:00 committed by Linus Torvalds
parent 659f865ea6
commit 16e70f64a9
1 changed files with 2 additions and 4 deletions
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6
samples/markers/marker-example.c
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@ -33,10 +33,8 @@ static struct file_operations mark_ops = {
static int example_init(void)
{
printk(KERN_ALERT "example init\n");
pentry_example = create_proc_entry("marker-example", 0444, NULL);
if (pentry_example)
pentry_example->proc_fops = &mark_ops;
else
pentry_example = proc_create("marker-example", 0444, NULL, &mark_ops);
if (!pentry_example)
return -EPERM;
return 0;
}