PCI: keystone: Fix link training retries initiation

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / block / blk-cgroup.c

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 5a37188..9873611 100644 (file)
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -185,7 +185,8 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg,
        }
 
        wb_congested = wb_congested_get_create(&q->backing_dev_info,
-                                              blkcg->css.id, GFP_NOWAIT);
+                                              blkcg->css.id,
+                                              GFP_NOWAIT | __GFP_NOWARN);
        if (!wb_congested) {
                ret = -ENOMEM;
                goto err_put_css;
@@ -193,7 +194,7 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg,
 
        /* allocate */
        if (!new_blkg) {
-               new_blkg = blkg_alloc(blkcg, q, GFP_NOWAIT);
+               new_blkg = blkg_alloc(blkcg, q, GFP_NOWAIT | __GFP_NOWARN);
                if (unlikely(!new_blkg)) {
                        ret = -ENOMEM;
                        goto err_put_congested;
@@ -788,6 +789,7 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
 {
        struct gendisk *disk;
        struct blkcg_gq *blkg;
+       struct module *owner;
        unsigned int major, minor;
        int key_len, part, ret;
        char *body;
@@ -804,7 +806,9 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
        if (!disk)
                return -ENODEV;
        if (part) {
+               owner = disk->fops->owner;
                put_disk(disk);
+               module_put(owner);
                return -ENODEV;
        }
 
@@ -820,7 +824,9 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
                ret = PTR_ERR(blkg);
                rcu_read_unlock();
                spin_unlock_irq(disk->queue->queue_lock);
+               owner = disk->fops->owner;
                put_disk(disk);
+               module_put(owner);
                /*
                 * If queue was bypassing, we should retry.  Do so after a
                 * short msleep().  It isn't strictly necessary but queue
@@ -851,9 +857,13 @@ EXPORT_SYMBOL_GPL(blkg_conf_prep);
 void blkg_conf_finish(struct blkg_conf_ctx *ctx)
        __releases(ctx->disk->queue->queue_lock) __releases(rcu)
 {
+       struct module *owner;
+
        spin_unlock_irq(ctx->disk->queue->queue_lock);
        rcu_read_unlock();
+       owner = ctx->disk->fops->owner;
        put_disk(ctx->disk);
+       module_put(owner);
 }
 EXPORT_SYMBOL_GPL(blkg_conf_finish);
 
@@ -1013,7 +1023,7 @@ blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
        }
 
        spin_lock_init(&blkcg->lock);
-       INIT_RADIX_TREE(&blkcg->blkg_tree, GFP_NOWAIT);
+       INIT_RADIX_TREE(&blkcg->blkg_tree, GFP_NOWAIT | __GFP_NOWARN);
        INIT_HLIST_HEAD(&blkcg->blkg_list);
 #ifdef CONFIG_CGROUP_WRITEBACK
        INIT_LIST_HEAD(&blkcg->cgwb_list);
@@ -1069,10 +1079,8 @@ int blkcg_init_queue(struct request_queue *q)
        if (preloaded)
                radix_tree_preload_end();
 
-       if (IS_ERR(blkg)) {
-               blkg_free(new_blkg);
+       if (IS_ERR(blkg))
                return PTR_ERR(blkg);
-       }
 
        q->root_blkg = blkg;
        q->root_rl.blkg = blkg;
@@ -1231,7 +1239,7 @@ pd_prealloc:
                if (blkg->pd[pol->plid])
                        continue;
 
-               pd = pol->pd_alloc_fn(GFP_NOWAIT, q->node);
+               pd = pol->pd_alloc_fn(GFP_NOWAIT | __GFP_NOWARN, q->node);
                if (!pd)
                        swap(pd, pd_prealloc);
                if (!pd) {
@@ -1331,10 +1339,8 @@ int blkcg_policy_register(struct blkcg_policy *pol)
                        struct blkcg_policy_data *cpd;
 
                        cpd = pol->cpd_alloc_fn(GFP_KERNEL);
-                       if (!cpd) {
-                               mutex_unlock(&blkcg_pol_mutex);
+                       if (!cpd)
                                goto err_free_cpds;
-                       }
 
                        blkcg->cpd[pol->plid] = cpd;
                        cpd->blkcg = blkcg;