diff options
| -rw-r--r-- | drivers/md/raid5-cache.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 889bba60d6ff..9909110262ee 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -686,7 +686,6 @@ static void r5c_disable_writeback_async(struct work_struct *work) disable_writeback_work); struct mddev *mddev = log->rdev->mddev; struct r5conf *conf = mddev->private; - int locked = 0; if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) return; @@ -696,13 +695,13 @@ static void r5c_disable_writeback_async(struct work_struct *work) /* wait superblock change before suspend */ wait_event(mddev->sb_wait, !READ_ONCE(conf->log) || - (!test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags) && - (locked = mddev_trylock(mddev)))); - if (locked) { - mddev_suspend(mddev); + !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags)); + + log = READ_ONCE(conf->log); + if (log) { + __mddev_suspend(mddev, false); log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH; - mddev_resume(mddev); - mddev_unlock(mddev); + __mddev_resume(mddev); } } @@ -2586,9 +2585,7 @@ int r5c_journal_mode_set(struct mddev *mddev, int mode) mode == R5C_JOURNAL_MODE_WRITE_BACK) return -EINVAL; - mddev_suspend(mddev); conf->log->r5c_journal_mode = mode; - mddev_resume(mddev); pr_debug("md/raid:%s: setting r5c cache mode to %d: %s\n", mdname(mddev), mode, r5c_journal_mode_str[mode]); @@ -2613,11 +2610,11 @@ static ssize_t r5c_journal_mode_store(struct mddev *mddev, if (strlen(r5c_journal_mode_str[mode]) == len && !strncmp(page, r5c_journal_mode_str[mode], len)) break; - ret = mddev_lock(mddev); + ret = mddev_suspend_and_lock(mddev); if (ret) return ret; ret = r5c_journal_mode_set(mddev, mode); - mddev_unlock(mddev); + mddev_unlock_and_resume(mddev); return ret ?: length; } |