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| author | Tejun Heo <tj@kernel.org> | 2012-02-15 09:45:49 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-02-15 09:45:49 +0100 |
| commit | d705ae6b133f9f6a8beee617b1224b6a5c99c5da (patch) | |
| tree | b1a0b09ae01f8385e66c021c338106b88e8d23f8 /block/cfq-iosched.c | |
| parent | 7ada1dd62804ca9ce1cb8666c6e563cd92fa50c1 (diff) | |
| download | linux-d705ae6b133f9f6a8beee617b1224b6a5c99c5da.tar.gz linux-d705ae6b133f9f6a8beee617b1224b6a5c99c5da.tar.bz2 linux-d705ae6b133f9f6a8beee617b1224b6a5c99c5da.zip | |
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 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index d0ba50533668..457295253566 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3470,20 +3470,20 @@ cfq_set_request(struct request_queue *q, struct request *rq, gfp_t gfp_mask) const int rw = rq_data_dir(rq); const bool is_sync = rq_is_sync(rq); struct cfq_queue *cfqq; + unsigned int changed; might_sleep_if(gfp_mask & __GFP_WAIT); spin_lock_irq(q->queue_lock); /* handle changed notifications */ - if (unlikely(cic->icq.changed)) { - if (test_and_clear_bit(ICQ_IOPRIO_CHANGED, &cic->icq.changed)) - changed_ioprio(cic); + changed = icq_get_changed(&cic->icq); + if (unlikely(changed & ICQ_IOPRIO_CHANGED)) + changed_ioprio(cic); #ifdef CONFIG_CFQ_GROUP_IOSCHED - if (test_and_clear_bit(ICQ_CGROUP_CHANGED, &cic->icq.changed)) - changed_cgroup(cic); + if (unlikely(changed & ICQ_CGROUP_CHANGED)) + changed_cgroup(cic); #endif - } new_queue: cfqq = cic_to_cfqq(cic, is_sync); |