diff options
| author | Tejun Heo <tj@kernel.org> | 2012-02-15 12:45:49 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-02-15 12:45:49 +0400 |
| commit | d705ae6b133f9f6a8beee617b1224b6a5c99c5da (patch) | |
| tree | b1a0b09ae01f8385e66c021c338106b88e8d23f8 /include/linux/iocontext.h | |
| parent | 7ada1dd62804ca9ce1cb8666c6e563cd92fa50c1 (diff) | |
| download | linux-d705ae6b133f9f6a8beee617b1224b6a5c99c5da.tar.xz | |
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 <tj@kernel.org>
Tested-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/iocontext.h')
| -rw-r--r-- | include/linux/iocontext.h | 9 |
1 files changed, 6 insertions, 3 deletions
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 <linux/workqueue.h> 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) { } |