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dm delay: cleanup

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Use setup_timer().
Replace semaphore with mutex.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alasdair G Kergon 2007-07-12 17:26:47 +01:00 committed by Linus Torvalds
parent 028867ac28
commit ac818646d4
1 changed files with 5 additions and 7 deletions
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12
drivers/md/dm-delay.c
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@ -20,7 +20,7 @@
struct delay_c {
struct timer_list delay_timer;
struct semaphore timer_lock;
struct mutex timer_lock;
struct work_struct flush_expired_bios;
struct list_head delayed_bios;
atomic_t may_delay;
@ -58,12 +58,12 @@ static void handle_delayed_timer(unsigned long data)
static void queue_timeout(struct delay_c *dc, unsigned long expires)
{
down(&dc->timer_lock);
mutex_lock(&dc->timer_lock);
if (!timer_pending(&dc->delay_timer) || expires < dc->delay_timer.expires)
mod_timer(&dc->delay_timer, expires);
up(&dc->timer_lock);
mutex_unlock(&dc->timer_lock);
}
static void flush_bios(struct bio *bio)
@ -193,13 +193,11 @@ out:
goto bad;
}
init_timer(&dc->delay_timer);
dc->delay_timer.function = handle_delayed_timer;
dc->delay_timer.data = (unsigned long)dc;
setup_timer(&dc->delay_timer, handle_delayed_timer, (unsigned long)dc);
INIT_WORK(&dc->flush_expired_bios, flush_expired_bios);
INIT_LIST_HEAD(&dc->delayed_bios);
init_MUTEX(&dc->timer_lock);
mutex_init(&dc->timer_lock);
atomic_set(&dc->may_delay, 1);
ti->private = dc;