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authorOleg Nesterov <oleg@tv-sign.ru>2006-12-08 02:38:03 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:28:52 -0800
commit62dfb5541a025b47df9405ff0219c7829a97d83b (patch)
tree4690d5d0bb750f977a0b73662019e5ced3ab99b4 /kernel/exit.c
parentf020bc468fe4a91d32046d448511978c7b611315 (diff)
downloadlinux-62dfb5541a025b47df9405ff0219c7829a97d83b.tar.gz
[PATCH] session_of_pgrp: kill unnecessary do_each_task_pid(PIDTYPE_PGID)
All members of the process group have the same sid and it can't be == 0. NOTE: this code (and a similar one in sys_setpgid) was needed because it was possibe to have ->session == 0. It's not possible any longer since [PATCH] pidhash: don't use zero pids Commit: c7c6464117a02b0d54feb4ebeca4db70fa493678 Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index fd0e067952a..03e64fe4a14 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -189,21 +189,18 @@ repeat:
int session_of_pgrp(int pgrp)
{
struct task_struct *p;
- int sid = -1;
+ int sid = 0;
read_lock(&tasklist_lock);
- do_each_task_pid(pgrp, PIDTYPE_PGID, p) {
- if (process_session(p) > 0) {
- sid = process_session(p);
- goto out;
- }
- } while_each_task_pid(pgrp, PIDTYPE_PGID, p);
- p = find_task_by_pid(pgrp);
- if (p)
+
+ p = find_task_by_pid_type(PIDTYPE_PGID, pgrp);
+ if (p == NULL)
+ p = find_task_by_pid(pgrp);
+ if (p != NULL)
sid = process_session(p);
-out:
+
read_unlock(&tasklist_lock);
-
+
return sid;
}