dm delay: cleanup
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>
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028867ac28
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@ -20,7 +20,7 @@
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struct delay_c {
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struct delay_c {
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struct timer_list delay_timer;
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struct timer_list delay_timer;
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struct semaphore timer_lock;
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struct mutex timer_lock;
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struct work_struct flush_expired_bios;
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struct work_struct flush_expired_bios;
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struct list_head delayed_bios;
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struct list_head delayed_bios;
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atomic_t may_delay;
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atomic_t may_delay;
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@ -58,12 +58,12 @@ static void handle_delayed_timer(unsigned long data)
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static void queue_timeout(struct delay_c *dc, unsigned long expires)
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static void queue_timeout(struct delay_c *dc, unsigned long expires)
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{
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{
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down(&dc->timer_lock);
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mutex_lock(&dc->timer_lock);
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if (!timer_pending(&dc->delay_timer) || expires < dc->delay_timer.expires)
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if (!timer_pending(&dc->delay_timer) || expires < dc->delay_timer.expires)
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mod_timer(&dc->delay_timer, expires);
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mod_timer(&dc->delay_timer, expires);
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up(&dc->timer_lock);
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mutex_unlock(&dc->timer_lock);
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}
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}
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static void flush_bios(struct bio *bio)
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static void flush_bios(struct bio *bio)
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@ -193,13 +193,11 @@ out:
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goto bad;
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goto bad;
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}
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}
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init_timer(&dc->delay_timer);
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setup_timer(&dc->delay_timer, handle_delayed_timer, (unsigned long)dc);
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dc->delay_timer.function = handle_delayed_timer;
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dc->delay_timer.data = (unsigned long)dc;
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INIT_WORK(&dc->flush_expired_bios, flush_expired_bios);
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INIT_WORK(&dc->flush_expired_bios, flush_expired_bios);
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INIT_LIST_HEAD(&dc->delayed_bios);
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INIT_LIST_HEAD(&dc->delayed_bios);
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init_MUTEX(&dc->timer_lock);
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mutex_init(&dc->timer_lock);
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atomic_set(&dc->may_delay, 1);
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atomic_set(&dc->may_delay, 1);
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ti->private = dc;
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ti->private = dc;
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