diff options
| author | Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com> | 2021-12-17 10:29:55 +0100 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2022-01-06 08:37:02 -0800 |
| commit | a92ce0feffeed8b91f02dac85246d1205e4a64b6 (patch) | |
| tree | 6d046d93295db91b35d8cc470cb2a4f0103549ec /drivers/md/raid1.c | |
| parent | 770b1d216d7371c94c88713824da4be4bc39a4e0 (diff) | |
md: drop queue limitation for RAID1 and RAID10
As suggested by Neil Brown[1], this limitation seems to be
deprecated.
With plugging in use, writes are processed behind the raid thread
and conf->pending_count is not increased. This limitation occurs only
if caller doesn't use plugs.
It can be avoided and often it is (with plugging). There are no reports
that queue is growing to enormous size so remove queue limitation for
non-plugged IOs too.
[1] https://lore.kernel.org/linux-raid/162496301481.7211.18031090130574610495@noble.neil.brown.name
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Signed-off-by: Song Liu <song@kernel.org>
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 7dc8026cf6ee..eeaedd6e0ce1 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1358,12 +1358,6 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, r1_bio = alloc_r1bio(mddev, bio); r1_bio->sectors = max_write_sectors; - if (conf->pending_count >= max_queued_requests) { - md_wakeup_thread(mddev->thread); - raid1_log(mddev, "wait queued"); - wait_event(conf->wait_barrier, - conf->pending_count < max_queued_requests); - } /* first select target devices under rcu_lock and * inc refcount on their rdev. Record them by setting * bios[x] to bio @@ -3410,4 +3404,3 @@ MODULE_ALIAS("md-personality-3"); /* RAID1 */ MODULE_ALIAS("md-raid1"); MODULE_ALIAS("md-level-1"); -module_param(max_queued_requests, int, S_IRUGO|S_IWUSR); |