Change proc/<pid>/cmdline to 8k
navinp1912 at gmail.com
Thu Jun 4 00:22:08 EDT 2015
I want to change the cmdline of a process to support 8096 . It works
well on ppc where the page size is 65k.
But when i try to increase it on x86 (i686)
http://lxr.free-electrons.com/source/fs/proc/base.c by doing
6*PAGE_SIZE, i get kernel panic after some time
199 static int proc_pid_cmdline(struct seq_file *m, struct pid_namespace *ns,
200 struct pid *pid, struct task_struct *task)
203 * Rely on struct seq_operations::show() being called once
204 * per internal buffer allocation. See single_open(), traverse().
206 BUG_ON(m->size < PAGE_SIZE);
207 m->count += get_cmdline(task, m->buf, 6*PAGE_SIZE);
208 return 0;
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