[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task
There isn't any real advantage to this change except that it allows the old
functions to be removed. Which is easier on maintenance and puts the code in
a more uniform style.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/sys.c b/kernel/sys.c
index efcf76e..123b165 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -596,6 +596,7 @@
struct task_struct *g, *p;
struct user_struct *user;
int error = -EINVAL;
+ struct pid *pgrp;
if (which > 2 || which < 0)
goto out;
@@ -610,18 +611,21 @@
read_lock(&tasklist_lock);
switch (which) {
case PRIO_PROCESS:
- if (!who)
- who = current->pid;
- p = find_task_by_pid(who);
+ if (who)
+ p = find_task_by_pid(who);
+ else
+ p = current;
if (p)
error = set_one_prio(p, niceval, error);
break;
case PRIO_PGRP:
- if (!who)
- who = process_group(current);
- do_each_task_pid(who, PIDTYPE_PGID, p) {
+ if (who)
+ pgrp = find_pid(who);
+ else
+ pgrp = task_pgrp(current);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
error = set_one_prio(p, niceval, error);
- } while_each_task_pid(who, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case PRIO_USER:
user = current->user;
@@ -656,6 +660,7 @@
struct task_struct *g, *p;
struct user_struct *user;
long niceval, retval = -ESRCH;
+ struct pid *pgrp;
if (which > 2 || which < 0)
return -EINVAL;
@@ -663,9 +668,10 @@
read_lock(&tasklist_lock);
switch (which) {
case PRIO_PROCESS:
- if (!who)
- who = current->pid;
- p = find_task_by_pid(who);
+ if (who)
+ p = find_task_by_pid(who);
+ else
+ p = current;
if (p) {
niceval = 20 - task_nice(p);
if (niceval > retval)
@@ -673,13 +679,15 @@
}
break;
case PRIO_PGRP:
- if (!who)
- who = process_group(current);
- do_each_task_pid(who, PIDTYPE_PGID, p) {
+ if (who)
+ pgrp = find_pid(who);
+ else
+ pgrp = task_pgrp(current);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
niceval = 20 - task_nice(p);
if (niceval > retval)
retval = niceval;
- } while_each_task_pid(who, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case PRIO_USER:
user = current->user;
@@ -1388,7 +1396,7 @@
if (p->real_parent == group_leader) {
err = -EPERM;
- if (process_session(p) != process_session(group_leader))
+ if (task_session(p) != task_session(group_leader))
goto out;
err = -EACCES;
if (p->did_exec)
@@ -1407,7 +1415,7 @@
struct task_struct *g =
find_task_by_pid_type(PIDTYPE_PGID, pgid);
- if (!g || process_session(g) != process_session(group_leader))
+ if (!g || task_session(g) != task_session(group_leader))
goto out;
}