From 207c5656c33d56b3759d0876b68fa56cb56e5c51 Mon Sep 17 00:00:00 2001 From: Yu Kuai Date: Tue, 11 Jun 2024 21:22:43 +0800 Subject: md: factor out helper to start reshape from action_store() There are no functional changes, just to make code cleaner and prepare for following refactor. Signed-off-by: Yu Kuai Signed-off-by: Song Liu Link: https://lore.kernel.org/r/20240611132251.1967786-5-yukuai1@huaweicloud.com --- drivers/md/md.c | 65 ++++++++++++++++++++++++++++++++++++--------------------- 1 file changed, 41 insertions(+), 24 deletions(-) (limited to 'drivers') diff --git a/drivers/md/md.c b/drivers/md/md.c index 4ce8d164cde9..b34ae9fbd246 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5071,6 +5071,45 @@ static void frozen_sync_thread(struct mddev *mddev) mutex_unlock(&mddev->sync_mutex); } +static int mddev_start_reshape(struct mddev *mddev) +{ + int ret; + + if (mddev->pers->start_reshape == NULL) + return -EINVAL; + + ret = mddev_lock(mddev); + if (ret) + return ret; + + if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) { + mddev_unlock(mddev); + return -EBUSY; + } + + if (mddev->reshape_position == MaxSector || + mddev->pers->check_reshape == NULL || + mddev->pers->check_reshape(mddev)) { + clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + ret = mddev->pers->start_reshape(mddev); + if (ret) { + mddev_unlock(mddev); + return ret; + } + } else { + /* + * If reshape is still in progress, and md_check_recovery() can + * continue to reshape, don't restart reshape because data can + * be corrupted for raid456. + */ + clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + } + + mddev_unlock(mddev); + sysfs_notify_dirent_safe(mddev->sysfs_degraded); + return 0; +} + static ssize_t action_store(struct mddev *mddev, const char *page, size_t len) { @@ -5090,32 +5129,10 @@ action_store(struct mddev *mddev, const char *page, size_t len) clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); set_bit(MD_RECOVERY_RECOVER, &mddev->recovery); } else if (cmd_match(page, "reshape")) { - int err; - if (mddev->pers->start_reshape == NULL) - return -EINVAL; - err = mddev_lock(mddev); - if (!err) { - if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) { - err = -EBUSY; - } else if (mddev->reshape_position == MaxSector || - mddev->pers->check_reshape == NULL || - mddev->pers->check_reshape(mddev)) { - clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); - err = mddev->pers->start_reshape(mddev); - } else { - /* - * If reshape is still in progress, and - * md_check_recovery() can continue to reshape, - * don't restart reshape because data can be - * corrupted for raid456. - */ - clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); - } - mddev_unlock(mddev); - } + int err = mddev_start_reshape(mddev); + if (err) return err; - sysfs_notify_dirent_safe(mddev->sysfs_degraded); } else { if (cmd_match(page, "check")) set_bit(MD_RECOVERY_CHECK, &mddev->recovery); -- cgit v1.2.3