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md: use wait_event() to simplify md_super_wait() 

md_super_wait is really just wait_event() open-coded.
So use the macro instead.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2014-09-09 14:20:28 +10:00
parent 9ba3b7f5d0
commit 1967cd5616
1 changed files with 1 additions and 8 deletions
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9
drivers/md/md.c
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@ -766,14 +766,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
void md_super_wait(struct mddev *mddev)
{
/* wait for all superblock writes that were scheduled to complete */
DEFINE_WAIT(wq);
for(;;) {
prepare_to_wait(&mddev->sb_wait, &wq, TASK_UNINTERRUPTIBLE);
if (atomic_read(&mddev->pending_writes)==0)
break;
schedule();
}
finish_wait(&mddev->sb_wait, &wq);
wait_event(mddev->sb_wait, atomic_read(&mddev->pending_writes)==0);
}
int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,