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alistair23-linux
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Lock bitmap while joining the cluster 

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
hifive-unleashed-5.1
Goldwyn Rodrigues 2014-06-06 12:12:32 -05:00
parent b97e92574c
commit 54519c5f4b
1 changed files with 14 additions and 0 deletions
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14
drivers/md/md-cluster.c
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@ -34,6 +34,7 @@ struct md_cluster_info {
struct completion completion;
struct dlm_lock_resource *sb_lock;
struct mutex sb_mutex;
struct dlm_lock_resource *bitmap_lockres;
};
static void sync_ast(void *arg)
@ -208,6 +209,18 @@ static int join(struct mddev *mddev, int nodes)
ret = -ENOMEM;
goto err;
}
pr_info("md-cluster: Joined cluster %s slot %d\n", str, cinfo->slot_number);
snprintf(str, 64, "bitmap%04d", cinfo->slot_number - 1);
cinfo->bitmap_lockres = lockres_init(mddev, str, NULL, 1);
if (!cinfo->bitmap_lockres)
goto err;
if (dlm_lock_sync(cinfo->bitmap_lockres, DLM_LOCK_PW)) {
pr_err("Failed to get bitmap lock\n");
ret = -EINVAL;
goto err;
}
return 0;
err:
if (cinfo->lockspace)
@ -225,6 +238,7 @@ static int leave(struct mddev *mddev)
if (!cinfo)
return 0;
lockres_free(cinfo->sb_lock);
lockres_free(cinfo->bitmap_lockres);
dlm_release_lockspace(cinfo->lockspace, 2);
return 0;
}