Commit e1dfa0a2 authored by NeilBrown's avatar NeilBrown

md: use new plugging interface for RAID IO.

md/raid submits a lot of IO from the various raid threads.
So adding start/finish plug calls to those so that some
plugging happens.
Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent 99e22598
......@@ -1516,9 +1516,11 @@ static void raid1d(mddev_t *mddev)
conf_t *conf = mddev->private;
struct list_head *head = &conf->retry_list;
mdk_rdev_t *rdev;
struct blk_plug plug;
md_check_recovery(mddev);
blk_start_plug(&plug);
for (;;) {
char b[BDEVNAME_SIZE];
......@@ -1593,6 +1595,7 @@ static void raid1d(mddev_t *mddev)
}
cond_resched();
}
blk_finish_plug(&plug);
}
......
......@@ -1640,9 +1640,11 @@ static void raid10d(mddev_t *mddev)
conf_t *conf = mddev->private;
struct list_head *head = &conf->retry_list;
mdk_rdev_t *rdev;
struct blk_plug plug;
md_check_recovery(mddev);
blk_start_plug(&plug);
for (;;) {
char b[BDEVNAME_SIZE];
......@@ -1716,6 +1718,7 @@ static void raid10d(mddev_t *mddev)
}
cond_resched();
}
blk_finish_plug(&plug);
}
......
......@@ -4478,11 +4478,13 @@ static void raid5d(mddev_t *mddev)
struct stripe_head *sh;
raid5_conf_t *conf = mddev->private;
int handled;
struct blk_plug plug;
pr_debug("+++ raid5d active\n");
md_check_recovery(mddev);
blk_start_plug(&plug);
handled = 0;
spin_lock_irq(&conf->device_lock);
while (1) {
......@@ -4525,6 +4527,7 @@ static void raid5d(mddev_t *mddev)
spin_unlock_irq(&conf->device_lock);
async_tx_issue_pending_all();
blk_finish_plug(&plug);
pr_debug("--- raid5d inactive\n");
}
......
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