diff options
author | Tejun Heo <tj@kernel.org> | 2011-06-09 20:43:55 +0200 |
---|---|---|
committer | Jens Axboe <jaxboe@fusionio.com> | 2011-06-09 20:43:55 +0200 |
commit | c3af54afbac3675337cedf326b7b127ffa7f7327 (patch) | |
tree | cc49ada3a2ef88f1415af73635cff7d062615856 /block/genhd.c | |
parent | a9dce2a3b4f0686dd66cb44d4826a59508bce969 (diff) | |
download | op-kernel-dev-c3af54afbac3675337cedf326b7b127ffa7f7327.zip op-kernel-dev-c3af54afbac3675337cedf326b7b127ffa7f7327.tar.gz |
block: remove non-syncing __disk_block_events() and fold it into disk_block_events()
After the previous update to disk_check_events(), nobody is using
non-syncing __disk_block_events(). Remove @sync and, as this makes
__disk_block_events() virtually identical to disk_block_events(),
remove the underscore prefixed version.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/genhd.c')
-rw-r--r-- | block/genhd.c | 55 |
1 files changed, 24 insertions, 31 deletions
diff --git a/block/genhd.c b/block/genhd.c index 3f09330..ab0731d 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1414,22 +1414,36 @@ static unsigned long disk_events_poll_jiffies(struct gendisk *disk) return msecs_to_jiffies(intv_msecs); } -static void __disk_block_events(struct gendisk *disk, bool sync) +/** + * disk_block_events - block and flush disk event checking + * @disk: disk to block events for + * + * On return from this function, it is guaranteed that event checking + * isn't in progress and won't happen until unblocked by + * disk_unblock_events(). Events blocking is counted and the actual + * unblocking happens after the matching number of unblocks are done. + * + * Note that this intentionally does not block event checking from + * disk_clear_events(). + * + * CONTEXT: + * Might sleep. + */ +void disk_block_events(struct gendisk *disk) { struct disk_events *ev = disk->ev; unsigned long flags; bool cancel; + if (!ev) + return; + spin_lock_irqsave(&ev->lock, flags); cancel = !ev->block++; spin_unlock_irqrestore(&ev->lock, flags); - if (cancel) { - if (sync) - cancel_delayed_work_sync(&disk->ev->dwork); - else - cancel_delayed_work(&disk->ev->dwork); - } + if (cancel) + cancel_delayed_work_sync(&disk->ev->dwork); } static void __disk_unblock_events(struct gendisk *disk, bool check_now) @@ -1461,27 +1475,6 @@ out_unlock: } /** - * disk_block_events - block and flush disk event checking - * @disk: disk to block events for - * - * On return from this function, it is guaranteed that event checking - * isn't in progress and won't happen until unblocked by - * disk_unblock_events(). Events blocking is counted and the actual - * unblocking happens after the matching number of unblocks are done. - * - * Note that this intentionally does not block event checking from - * disk_clear_events(). - * - * CONTEXT: - * Might sleep. - */ -void disk_block_events(struct gendisk *disk) -{ - if (disk->ev) - __disk_block_events(disk, true); -} - -/** * disk_unblock_events - unblock disk event checking * @disk: disk to unblock events for * @@ -1554,7 +1547,7 @@ unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask) spin_unlock_irq(&ev->lock); /* uncondtionally schedule event check and wait for it to finish */ - __disk_block_events(disk, true); + disk_block_events(disk); queue_delayed_work(system_nrt_wq, &ev->dwork, 0); flush_delayed_work(&ev->dwork); __disk_unblock_events(disk, false); @@ -1672,7 +1665,7 @@ static ssize_t disk_events_poll_msecs_store(struct device *dev, if (intv < 0 && intv != -1) return -EINVAL; - __disk_block_events(disk, true); + disk_block_events(disk); disk->ev->poll_msecs = intv; __disk_unblock_events(disk, true); @@ -1778,7 +1771,7 @@ static void disk_del_events(struct gendisk *disk) if (!disk->ev) return; - __disk_block_events(disk, true); + disk_block_events(disk); mutex_lock(&disk_events_mutex); list_del_init(&disk->ev->node); |