From 5332dfc36483d2373d980526145789a354af2d49 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Aug 2015 14:55:27 -0700 Subject: [PATCH] blkcg: remove unnecessary NULL checks from __cfqg_set_weight_device() blkg_to_cfqg() and blkcg_to_cfqgd() on a valid blkg with the policy enabled are guaranteed to return non-NULL and the counterpart in blk-throttle doesn't have these checks either. Remove the spurious NULL checks. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- block/cfq-iosched.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 395476ab14fe..bcf40266bd0a 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1752,12 +1752,10 @@ static ssize_t __cfqg_set_weight_device(struct kernfs_open_file *of, if (ret) return ret; - ret = -EINVAL; cfqg = blkg_to_cfqg(ctx.blkg); cfqgd = blkcg_to_cfqgd(blkcg); - if (!cfqg || !cfqgd) - goto err; + ret = -EINVAL; if (!ctx.v || (ctx.v >= CFQ_WEIGHT_MIN && ctx.v <= CFQ_WEIGHT_MAX)) { if (!is_leaf_weight) { cfqg->dev_weight = ctx.v; @@ -1769,7 +1767,6 @@ static ssize_t __cfqg_set_weight_device(struct kernfs_open_file *of, ret = 0; } -err: blkg_conf_finish(&ctx); return ret ?: nbytes; }