diff options
| -rw-r--r-- | block/blk-ioc.c | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/block/blk-ioc.c b/block/blk-ioc.c index c898049dafd5..bfb0493d12af 100644 --- a/block/blk-ioc.c +++ b/block/blk-ioc.c @@ -82,26 +82,26 @@ void exit_io_context(struct task_struct *task) struct io_context *alloc_io_context(gfp_t gfp_flags, int node) { - struct io_context *ret; + struct io_context *ioc; - ret = kmem_cache_alloc_node(iocontext_cachep, gfp_flags, node); - if (ret) { - atomic_long_set(&ret->refcount, 1); - atomic_set(&ret->nr_tasks, 1); - spin_lock_init(&ret->lock); - ret->ioprio_changed = 0; - ret->ioprio = 0; - ret->last_waited = 0; /* doesn't matter... */ - ret->nr_batch_requests = 0; /* because this is 0 */ - INIT_RADIX_TREE(&ret->radix_root, GFP_ATOMIC | __GFP_HIGH); - INIT_HLIST_HEAD(&ret->cic_list); - ret->ioc_data = NULL; + ioc = kmem_cache_alloc_node(iocontext_cachep, gfp_flags, node); + if (ioc) { + atomic_long_set(&ioc->refcount, 1); + atomic_set(&ioc->nr_tasks, 1); + spin_lock_init(&ioc->lock); + ioc->ioprio_changed = 0; + ioc->ioprio = 0; + ioc->last_waited = 0; /* doesn't matter... */ + ioc->nr_batch_requests = 0; /* because this is 0 */ + INIT_RADIX_TREE(&ioc->radix_root, GFP_ATOMIC | __GFP_HIGH); + INIT_HLIST_HEAD(&ioc->cic_list); + ioc->ioc_data = NULL; #if defined(CONFIG_BLK_CGROUP) || defined(CONFIG_BLK_CGROUP_MODULE) - ret->cgroup_changed = 0; + ioc->cgroup_changed = 0; #endif } - return ret; + return ioc; } /* @@ -139,19 +139,19 @@ struct io_context *current_io_context(gfp_t gfp_flags, int node) */ struct io_context *get_io_context(gfp_t gfp_flags, int node) { - struct io_context *ret = NULL; + struct io_context *ioc = NULL; /* * Check for unlikely race with exiting task. ioc ref count is * zero when ioc is being detached. */ do { - ret = current_io_context(gfp_flags, node); - if (unlikely(!ret)) + ioc = current_io_context(gfp_flags, node); + if (unlikely(!ioc)) break; - } while (!atomic_long_inc_not_zero(&ret->refcount)); + } while (!atomic_long_inc_not_zero(&ioc->refcount)); - return ret; + return ioc; } EXPORT_SYMBOL(get_io_context); |