[PATCH] select_bad_process(): cleanup 'releasing' check

No logic changes, but imho easier to read.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 423dcae..991bf0c 100644 (file)
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -204,7 +204,6 @@ static struct task_struct *select_bad_process(unsigned long *ppoints)
        do_posix_clock_monotonic_gettime(&uptime);
        do_each_thread(g, p) {
                unsigned long points;
-               int releasing;
 
                /*
                 * skip kernel threads and tasks which have already released
@@ -226,16 +225,15 @@ static struct task_struct *select_bad_process(unsigned long *ppoints)
                 * the process of exiting and releasing its resources.
                 * Otherwise we could get an OOM deadlock.
                 */
-               releasing = test_tsk_thread_flag(p, TIF_MEMDIE) ||
-                                               p->flags & PF_EXITING;
-               if (releasing) {
-                       if (p->flags & PF_EXITING && p == current) {
-                               chosen = p;
-                               *ppoints = ULONG_MAX;
-                               break;
-                       }
-                       return ERR_PTR(-1UL);
+               if ((p->flags & PF_EXITING) && p == current) {
+                       chosen = p;
+                       *ppoints = ULONG_MAX;
+                       break;
                }
+               if ((p->flags & PF_EXITING) ||
+                               test_tsk_thread_flag(p, TIF_MEMDIE))
+                       return ERR_PTR(-1UL);
+
                if (p->oomkilladj == OOM_DISABLE)
                        continue;
 
@@ -245,6 +243,7 @@ static struct task_struct *select_bad_process(unsigned long *ppoints)
                        *ppoints = points;
                }
        } while_each_thread(g, p);
+
        return chosen;
 }