Commit 9425c1fd authored by Ofer Heifetz's avatar Ofer Heifetz Committed by Greg Kroah-Hartman

md/raid5: add thread_group worker async_tx_issue_pending_all

commit 7e96d559 upstream.

Since thread_group worker and raid5d kthread are not in sync, if
worker writes stripe before raid5d then requests will be waiting
for issue_pendig.

Issue observed when building raid5 with ext4, in some build runs
jbd2 would get hung and requests were waiting in the HW engine
waiting to be issued.

Fix this by adding a call to async_tx_issue_pending_all in the
raid5_do_work.
Signed-off-by: default avatarOfer Heifetz <oferh@marvell.com>
Signed-off-by: default avatarShaohua Li <shli@fb.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 270c1bc3
......@@ -6237,6 +6237,8 @@ static void raid5_do_work(struct work_struct *work)
pr_debug("%d stripes handled\n", handled);
spin_unlock_irq(&conf->device_lock);
async_tx_issue_pending_all();
blk_finish_plug(&plug);
pr_debug("--- raid5worker inactive\n");
......
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