From: Mandeep Singh Baines Date: Thu, 15 Dec 2011 22:21:26 +0000 (-0800) Subject: cgroups: remove redundant get/put of css_set from css_set_check_fetched() X-Git-Tag: firefly_0821_release~3680^2~3800^2~10 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=29e21368b9baf9c4b25060d65062da2dda926c70;p=firefly-linux-kernel-4.4.55.git cgroups: remove redundant get/put of css_set from css_set_check_fetched() We already have a reference to all elements in newcg_list. Signed-off-by: Mandeep Singh Baines Reviewed-by: Li Zefan Signed-off-by: Tejun Heo Cc: containers@lists.linux-foundation.org Cc: cgroups@vger.kernel.org Cc: Paul Menage --- diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 1b3b84174ead..bc3caff138d8 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2025,23 +2025,17 @@ static bool css_set_check_fetched(struct cgroup *cgrp, read_lock(&css_set_lock); newcg = find_existing_css_set(cg, cgrp, template); - if (newcg) - get_css_set(newcg); read_unlock(&css_set_lock); /* doesn't exist at all? */ if (!newcg) return false; /* see if it's already in the list */ - list_for_each_entry(cg_entry, newcg_list, links) { - if (cg_entry->cg == newcg) { - put_css_set(newcg); + list_for_each_entry(cg_entry, newcg_list, links) + if (cg_entry->cg == newcg) return true; - } - } /* not found */ - put_css_set(newcg); return false; }