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raid5: enable log for raid array with cache disk 

Now log is safe to enable for raid array with cache disk

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
This commit is contained in:
Shaohua Li 2015-08-13 14:32:04 -07:00 committed by NeilBrown
parent 713cf5a639
commit 5c7e81c3de
2 changed files with 12 additions and 0 deletions
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11
drivers/md/raid5.c
View File

@ -6329,8 +6329,11 @@ static void raid5_free_percpu(struct r5conf *conf)
static void free_conf(struct r5conf *conf)
{
if (conf->log)
r5l_exit_log(conf->log);
if (conf->shrinker.seeks)
unregister_shrinker(&conf->shrinker);
free_thread_groups(conf);
shrink_stripes(conf);
raid5_free_percpu(conf);
@ -6996,6 +6999,14 @@ static int run(struct mddev *mddev)
mddev->queue);
}
if (journal_dev) {
char b[BDEVNAME_SIZE];
printk(KERN_INFO"md/raid:%s: using device %s as journal\n",
mdname(mddev), bdevname(journal_dev->bdev, b));
r5l_init_log(conf, journal_dev);
}
return 0;
abort:
md_unregister_thread(&mddev->thread);

1
include/uapi/linux/raid/md_p.h
View File

@ -322,6 +322,7 @@ struct mdp_superblock_1 {
|MD_FEATURE_NEW_OFFSET \
|MD_FEATURE_RECOVERY_BITMAP \
|MD_FEATURE_CLUSTERED \
|MD_FEATURE_JOURNAL \
)
struct r5l_payload_header {