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fs: Convert show_fdinfo functions to void

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seq_printf functions shouldn't really check the return value.
Checking seq_has_overflowed() occasionally is used instead.

Update vfs documentation.

Link: http://lkml.kernel.org/p/e37e6e7b76acbdcc3bb4ab2a57c8f8ca1ae11b9a.1412031505.git.joe@perches.com

Cc: David S. Miller <davem@davemloft.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Joe Perches <joe@perches.com>
[ did a few clean ups ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Joe Perches
2014-09-29 16:08:25 -07:00
committed by Steven Rostedt
parent f365ef9b79
commit a3816ab0e8
10 changed files with 63 additions and 83 deletions
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13
fs/eventpoll.c
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@@ -870,25 +870,22 @@ static unsigned int ep_eventpoll_poll(struct file *file, poll_table *wait)
}
#ifdef CONFIG_PROC_FS
static int ep_show_fdinfo(struct seq_file *m, struct file *f)
static void ep_show_fdinfo(struct seq_file *m, struct file *f)
{
struct eventpoll *ep = f->private_data;
struct rb_node *rbp;
int ret = 0;
mutex_lock(&ep->mtx);
for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) {
struct epitem *epi = rb_entry(rbp, struct epitem, rbn);
ret = seq_printf(m, "tfd: %8d events: %8x data: %16llx\n",
epi->ffd.fd, epi->event.events,
(long long)epi->event.data);
if (ret)
seq_printf(m, "tfd: %8d events: %8x data: %16llx\n",
epi->ffd.fd, epi->event.events,
(long long)epi->event.data);
if (seq_has_overflowed(m))
break;
}
mutex_unlock(&ep->mtx);
return ret;
}
#endif