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cpuset: use seq_*mask_* to print masks 

1) seq_file excepts that m->count == m->size when it's buf is full,
   so current code will causes bugs when buf is overflow.

2) There is not too good that cpuset accesses struct seq_file's
   fields directly.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Paul Menage <menage@google.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Lai Jiangshan 2008-10-18 20:28:20 -07:00 committed by Linus Torvalds
parent 3eda201180
commit 30e8e13603
1 changed files with 4 additions and 8 deletions
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12
kernel/cpuset.c
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@ -2436,19 +2436,15 @@ const struct file_operations proc_cpuset_operations = {
void cpuset_task_status_allowed(struct seq_file *m, struct task_struct *task)
{
seq_printf(m, "Cpus_allowed:\t");
m->count += cpumask_scnprintf(m->buf + m->count, m->size - m->count,
task->cpus_allowed);
seq_cpumask(m, &task->cpus_allowed);
seq_printf(m, "\n");
seq_printf(m, "Cpus_allowed_list:\t");
m->count += cpulist_scnprintf(m->buf + m->count, m->size - m->count,
task->cpus_allowed);
seq_cpumask_list(m, &task->cpus_allowed);
seq_printf(m, "\n");
seq_printf(m, "Mems_allowed:\t");
m->count += nodemask_scnprintf(m->buf + m->count, m->size - m->count,
task->mems_allowed);
seq_nodemask(m, &task->mems_allowed);
seq_printf(m, "\n");
seq_printf(m, "Mems_allowed_list:\t");
m->count += nodelist_scnprintf(m->buf + m->count, m->size - m->count,
task->mems_allowed);
seq_nodemask_list(m, &task->mems_allowed);
seq_printf(m, "\n");
}