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[PATCH] switch to use of ->key to get cfq_data by cfq_io_context 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2006-03-18 13:25:24 -05:00
parent 7670876d2d
commit 478a82b0ed
1 changed files with 15 additions and 11 deletions
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26
block/cfq-iosched.c
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@ -1212,7 +1212,7 @@ static void cfq_free_io_context(struct cfq_io_context *cic)
*/
static void cfq_exit_single_io_context(struct cfq_io_context *cic)
{
struct cfq_data *cfqd = cic->cfqq->cfqd;
struct cfq_data *cfqd = cic->key;
request_queue_t *q = cfqd->queue;
WARN_ON(!irqs_disabled());
@ -1224,6 +1224,7 @@ static void cfq_exit_single_io_context(struct cfq_io_context *cic)
cfq_put_queue(cic->cfqq);
cic->cfqq = NULL;
cic->key = NULL;
spin_unlock(q->queue_lock);
}
@ -1318,14 +1319,17 @@ static void cfq_init_prio_data(struct cfq_queue *cfqq)
cfq_clear_cfqq_prio_changed(cfqq);
}
static inline void changed_ioprio(struct cfq_queue *cfqq)
static inline void changed_ioprio(struct cfq_io_context *cic)
{
if (cfqq) {
struct cfq_data *cfqd = cfqq->cfqd;
struct cfq_data *cfqd = cic->key;
struct cfq_queue *cfqq;
if (cfqd) {
spin_lock(cfqd->queue->queue_lock);
cfq_mark_cfqq_prio_changed(cfqq);
cfq_init_prio_data(cfqq);
cfqq = cic->cfqq;
if (cfqq) {
cfq_mark_cfqq_prio_changed(cfqq);
cfq_init_prio_data(cfqq);
}
spin_unlock(cfqd->queue->queue_lock);
}
}
@ -1337,10 +1341,10 @@ static int cfq_ioc_set_ioprio(struct io_context *ioc, unsigned int ioprio)
{
struct cfq_io_context *cic = ioc->cic;
changed_ioprio(cic->cfqq);
changed_ioprio(cic);
list_for_each_entry(cic, &cic->list, list)
changed_ioprio(cic->cfqq);
changed_ioprio(cic);
return 0;
}
@ -1429,10 +1433,10 @@ cfq_get_io_context(struct cfq_data *cfqd, pid_t pid, gfp_t gfp_mask)
* manually increment generic io_context usage count, it
* cannot go away since we are already holding one ref to it
*/
ioc->cic = cic;
ioc->set_ioprio = cfq_ioc_set_ioprio;
cic->ioc = ioc;
cic->key = cfqd;
ioc->set_ioprio = cfq_ioc_set_ioprio;
ioc->cic = cic;
} else {
struct cfq_io_context *__cic;