From d705ae6b133f9f6a8beee617b1224b6a5c99c5da Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 15 Feb 2012 09:45:49 +0100 Subject: block: replace icq->changed with icq->flags icq->changed was used for ICQ_*_CHANGED bits. Rename it to flags and access it under ioc->lock instead of using atomic bitops. ioc_get_changed() is added so that the changed part can be fetched and cleared as before. icq->flags will be used to carry other flags. Signed-off-by: Tejun Heo Tested-by: Shaohua Li Signed-off-by: Jens Axboe --- include/linux/iocontext.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux/iocontext.h') diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h index 119773eebe31..17839c7b9614 100644 --- a/include/linux/iocontext.h +++ b/include/linux/iocontext.h @@ -6,8 +6,10 @@ #include enum { - ICQ_IOPRIO_CHANGED, - ICQ_CGROUP_CHANGED, + ICQ_IOPRIO_CHANGED = 1 << 0, + ICQ_CGROUP_CHANGED = 1 << 1, + + ICQ_CHANGED_MASK = ICQ_IOPRIO_CHANGED | ICQ_CGROUP_CHANGED, }; /* @@ -88,7 +90,7 @@ struct io_cq { struct rcu_head __rcu_head; }; - unsigned long changed; + unsigned int flags; }; /* @@ -139,6 +141,7 @@ struct io_context *get_task_io_context(struct task_struct *task, gfp_t gfp_flags, int node); void ioc_ioprio_changed(struct io_context *ioc, int ioprio); void ioc_cgroup_changed(struct io_context *ioc); +unsigned int icq_get_changed(struct io_cq *icq); #else struct io_context; static inline void put_io_context(struct io_context *ioc) { } -- cgit v1.2.3-59-g8ed1b