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authorDan Williams <dan.j.williams@intel.com>2009-10-16 15:55:38 +1100
committerNeilBrown <neilb@suse.de>2009-10-16 15:55:38 +1100
commitf5efd45ae597c96ed017afad5662b67d55b402a0 (patch)
tree32ef979c6882d594890e02466003f5255af00fe3 /drivers/md/raid5.c
parent1d9d52416c0445019ccc1f0fddb9a227456eb61b (diff)
downloadop-kernel-dev-f5efd45ae597c96ed017afad5662b67d55b402a0.zip
op-kernel-dev-f5efd45ae597c96ed017afad5662b67d55b402a0.tar.gz
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>
Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c25
1 files changed, 12 insertions, 13 deletions
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) {
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