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[NET]: Fix heavy stack usage in seq_file output routines.

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Plan C: we can follow the Al Viro's proposal about %n like in this patch.
The same applies to udp, fib (the /proc/net/route file), rt_cache and 
sctp debug. This is minus ~150-200 bytes for each.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2008-04-24 01:02:16 -07:00
committed by David S. Miller
parent 3d36696024
commit 5e659e4cb0
6 changed files with 56 additions and 50 deletions
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9
net/sctp/objcnt.c
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@@ -83,13 +83,12 @@ static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = {
*/
static int sctp_objcnt_seq_show(struct seq_file *seq, void *v)
{
int i;
char temp[128];
int i, len;
i = (int)*(loff_t *)v;
sprintf(temp, "%s: %d", sctp_dbg_objcnt[i].label,
atomic_read(sctp_dbg_objcnt[i].counter));
seq_printf(seq, "%-127s\n", temp);
seq_printf(seq, "%s: %d%n", sctp_dbg_objcnt[i].label,
atomic_read(sctp_dbg_objcnt[i].counter), &len);
seq_printf(seq, "%*s\n", 127 - len, "");
return 0;
}