Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 5/8] res_counter: allow charge failure pointer to be null | Date | Fri, 13 Jan 2012 19:13:54 +0100 |
| |
So that callers of res_counter_charge() don't have to create and pass this pointer even if they aren't interested in it.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Menage <paul@paulmenage.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Aditya Kali <adityakali@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Tim Hockin <thockin@hockin.org> Cc: Tejun Heo <htejun@gmail.com> Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/res_counter.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel/res_counter.c b/kernel/res_counter.c index 86d72b8..644898a 100644 --- a/kernel/res_counter.c +++ b/kernel/res_counter.c @@ -43,14 +43,16 @@ int res_counter_charge_until(struct res_counter *counter, unsigned long flags; struct res_counter *c, *u; - *limit_fail_at = NULL; + if (limit_fail_at) + *limit_fail_at = NULL; local_irq_save(flags); for (c = counter; c != limit; c = c->parent) { spin_lock(&c->lock); ret = res_counter_charge_locked(c, val); spin_unlock(&c->lock); if (ret < 0) { - *limit_fail_at = c; + if (limit_fail_at) + *limit_fail_at = c; goto undo; } } -- 1.7.5.4
| |