The following commit has been merged in the linux branch: commit f5efd45ae597c96ed017afad5662b67d55b402a0 Author: Dan Williams dan.j.williams@intel.com Date: Fri Oct 16 15:55:38 2009 +1100

md/raid5: initialize conf->device_lock earlier

Deallocating a raid5_conf_t structure requires taking 'device_lock'. Ensure it is initialized before it is used, i.e. initialize the lock before attempting any further initializations that might fail.

Signed-off-by: Dan Williams dan.j.williams@intel.com Signed-off-by: NeilBrown neilb@suse.de

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index ec14ff5..c3e5967 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4715,6 +4715,18 @@ static raid5_conf_t *setup_conf(mddev_t *mddev) conf = kzalloc(sizeof(raid5_conf_t), GFP_KERNEL); if (conf == NULL) goto abort; + spin_lock_init(&conf->device_lock); + init_waitqueue_head(&conf->wait_for_stripe); + init_waitqueue_head(&conf->wait_for_overlap); + INIT_LIST_HEAD(&conf->handle_list); + INIT_LIST_HEAD(&conf->hold_list); + INIT_LIST_HEAD(&conf->delayed_list); + INIT_LIST_HEAD(&conf->bitmap_list); + INIT_LIST_HEAD(&conf->inactive_list); + atomic_set(&conf->active_stripes, 0); + atomic_set(&conf->preread_active_stripes, 0); + atomic_set(&conf->active_aligned_reads, 0); + conf->bypass_threshold = BYPASS_THRESHOLD;

conf->raid_disks = mddev->raid_disks; conf->scribble_len = scribble_len(conf->raid_disks); @@ -4737,19 +4749,6 @@ static raid5_conf_t *setup_conf(mddev_t *mddev) if (raid5_alloc_percpu(conf) != 0) goto abort;

- spin_lock_init(&conf->device_lock); - init_waitqueue_head(&conf->wait_for_stripe); - init_waitqueue_head(&conf->wait_for_overlap); - INIT_LIST_HEAD(&conf->handle_list); - INIT_LIST_HEAD(&conf->hold_list); - INIT_LIST_HEAD(&conf->delayed_list); - INIT_LIST_HEAD(&conf->bitmap_list); - INIT_LIST_HEAD(&conf->inactive_list); - atomic_set(&conf->active_stripes, 0); - atomic_set(&conf->preread_active_stripes, 0); - atomic_set(&conf->active_aligned_reads, 0); - conf->bypass_threshold = BYPASS_THRESHOLD; - pr_debug("raid5: run(%s) called.\n", mdname(mddev));

list_for_each_entry(rdev, &mddev->disks, same_set) {