diff options
Diffstat (limited to 'include/linux/iocontext.h')
| -rw-r--r-- | include/linux/iocontext.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h index 593b222d9dc..2b7a1187cb2 100644 --- a/include/linux/iocontext.h +++ b/include/linux/iocontext.h @@ -2,6 +2,7 @@ #define IOCONTEXT_H #include <linux/radix-tree.h> +#include <linux/rcupdate.h> /* * This is the per-process anticipatory I/O scheduler state. @@ -50,9 +51,12 @@ struct cfq_io_context { sector_t seek_mean; struct list_head queue_list; + struct hlist_node cic_list; void (*dtor)(struct io_context *); /* destructor */ void (*exit)(struct io_context *); /* called on task exit */ + + struct rcu_head rcu_head; }; /* @@ -77,6 +81,7 @@ struct io_context { struct as_io_context *aic; struct radix_tree_root radix_root; + struct hlist_head cic_list; void *ioc_data; }; @@ -86,8 +91,10 @@ static inline struct io_context *ioc_task_link(struct io_context *ioc) * if ref count is zero, don't allow sharing (ioc is going away, it's * a race). */ - if (ioc && atomic_inc_not_zero(&ioc->refcount)) + if (ioc && atomic_inc_not_zero(&ioc->refcount)) { + atomic_inc(&ioc->nr_tasks); return ioc; + } return NULL; } |