From eb6c84e4b4f2cf23e2cbd6e358703b1675ff8bec Mon Sep 17 00:00:00 2001 From: Xiao Ni Date: Fri, 14 Jun 2019 15:41:05 -0700 Subject: [PATCH] raid5-cache: Need to do start() part job after adding journal device commit d9771f5ec46c282d518b453c793635dbdc3a2a94 upstream. commit d5d885fd514f ("md: introduce new personality funciton start()") splits the init job to two parts. The first part run() does the jobs that do not require the md threads. The second part start() does the jobs that require the md threads. Now it just does run() in adding new journal device. It needs to do the second part start() too. Fixes: d5d885fd514f ("md: introduce new personality funciton start()") Cc: stable@vger.kernel.org #v4.9+ Reported-by: Michal Soltys Signed-off-by: Xiao Ni Signed-off-by: Song Liu Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- drivers/md/raid5.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index f237d6f30752..a147619498df 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7670,7 +7670,7 @@ static int raid5_remove_disk(struct mddev *mddev, struct md_rdev *rdev) static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev) { struct r5conf *conf = mddev->private; - int err = -EEXIST; + int ret, err = -EEXIST; int disk; struct disk_info *p; int first = 0; @@ -7685,7 +7685,14 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev) * The array is in readonly mode if journal is missing, so no * write requests running. We should be safe */ - log_init(conf, rdev, false); + ret = log_init(conf, rdev, false); + if (ret) + return ret; + + ret = r5l_start(conf->log); + if (ret) + return ret; + return 0; } if (mddev->recovery_disabled == conf->recovery_disabled) -- 2.43.0