From: NeilBrown <neilb@suse.de>
To: linux-raid@vger.kernel.org
Subject: [md PATCH 01/26] md: do_release_stripe(): No need to call md_wakeup_thread() twice
Date: Wed, 04 Feb 2015 08:42:28 +1100 [thread overview]
Message-ID: <20150203214228.3448.90778.stgit@notabene.brown> (raw)
In-Reply-To: <20150203213948.3448.80258.stgit@notabene.brown>
From: Jes Sorensen <Jes.Sorensen@redhat.com>
67f455486d2ea20b2d94d6adf5b9b783d079e321 introduced a call to
md_wakeup_thread() when adding to the delayed_list. However the md
thread is woken up unconditionally just below.
Remove the unnecessary wakeup call.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---
drivers/md/raid5.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b98765f6f77f..274db1834d43 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -296,12 +296,9 @@ static void do_release_stripe(struct r5conf *conf, struct stripe_head *sh,
BUG_ON(atomic_read(&conf->active_stripes)==0);
if (test_bit(STRIPE_HANDLE, &sh->state)) {
if (test_bit(STRIPE_DELAYED, &sh->state) &&
- !test_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) {
+ !test_bit(STRIPE_PREREAD_ACTIVE, &sh->state))
list_add_tail(&sh->lru, &conf->delayed_list);
- if (atomic_read(&conf->preread_active_stripes)
- < IO_THRESHOLD)
- md_wakeup_thread(conf->mddev->thread);
- } else if (test_bit(STRIPE_BIT_DELAY, &sh->state) &&
+ else if (test_bit(STRIPE_BIT_DELAY, &sh->state) &&
sh->bm_seq - conf->seq_write > 0)
list_add_tail(&sh->lru, &conf->bitmap_list);
else {
next prev parent reply other threads:[~2015-02-03 21:42 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-03 21:42 [md PATCH 00/26] Pending md patches NeilBrown
2015-02-03 21:42 ` [md PATCH 03/26] md/raid5: separate out the easy conditions in need_this_block NeilBrown
2015-02-03 21:42 ` [md PATCH 05/26] md/raid5: need_this_block: tidy/fix last condition NeilBrown
2015-02-03 21:42 ` [md PATCH 02/26] md/raid5: separate large if clause out of fetch_block() NeilBrown
2015-02-03 21:42 ` NeilBrown [this message]
2015-02-03 21:42 ` [md PATCH 04/26] md/raid5: need_this_block: start simplifying the last two conditions NeilBrown
2015-02-03 21:42 ` [md PATCH 06/26] md: rename mddev->write_lock to mddev->lock NeilBrown
2015-02-03 21:42 ` [md PATCH 17/26] md: remove mddev_lock() from md_attr_show() NeilBrown
2015-02-03 21:42 ` [md PATCH 09/26] md/linear: remove rcu protections in favour of suspend/resume NeilBrown
2015-02-03 21:42 ` [md PATCH 15/26] md: remove need for mddev_lock() in md_seq_show() NeilBrown
2015-02-03 21:42 ` [md PATCH 08/26] md: make merge_bvec_fn more robust in face of personality changes NeilBrown
2015-02-03 21:42 ` [md PATCH 20/26] md: tidy up set_bitmap_file NeilBrown
2015-02-03 21:42 ` [md PATCH 18/26] md: remove mddev_lock from rdev_attr_show() NeilBrown
2015-02-03 21:42 ` [md PATCH 07/26] md: make ->congested robust against personality changes NeilBrown
2015-02-03 21:42 ` [md PATCH 11/26] md: rename ->stop to ->free NeilBrown
2015-02-03 21:42 ` [md PATCH 14/26] md/bitmap: protect clearing of ->bitmap by mddev->lock NeilBrown
2015-02-03 21:42 ` [md PATCH 16/26] md/raid5: use ->lock to protect accessing raid5 sysfs attributes NeilBrown
2015-02-03 21:42 ` [md PATCH 19/26] md: remove unnecessary 'buf' from get_bitmap_file NeilBrown
2015-02-03 21:42 ` [md PATCH 12/26] md: level_store: group all important changes into one place NeilBrown
2015-02-03 21:42 ` [md PATCH 10/26] md: split detach operation out from ->stop NeilBrown
2015-02-03 21:42 ` [md PATCH 13/26] md: protect ->pers changes with mddev->lock NeilBrown
2015-02-03 21:42 ` [md PATCH 22/26] md: minor cleanup in safe_delay_store NeilBrown
2015-02-03 21:42 ` [md PATCH 21/26] md: move GET_BITMAP_FILE ioctl out from mddev_lock NeilBrown
2015-02-03 21:42 ` [md PATCH 26/26] md: wakeup thread upon rdev_dec_pending() NeilBrown
2015-02-03 21:42 ` [md PATCH 25/26] md: make reconfig_mutex optional for writes to md sysfs files NeilBrown
2015-02-03 21:42 ` [md PATCH 24/26] md: move mddev_lock and related to md.h NeilBrown
2015-02-03 21:42 ` [md PATCH 23/26] md: use mddev->lock to protect updates to resync_{min, max} NeilBrown
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