[Ocfs2-devel] [PATCH 4/7] Shift allocation of ocfs2_live_connection to ocfs2_cluster_connect

[Joel Becker <jlbec@evilplan.org>]

On Fri, Sep 27, 2013 at 12:08:25PM -0500, Goldwyn Rodrigues wrote:
> This is required because we need the live_connection structure ready
> when we perform the dlm_new_lockspace().

Why?  You just allocate it and pass it in.  Is it for a future change?
Mention what that change is.

Joel

> ---
>  fs/ocfs2/stack_user.c | 31 +++++++++++++++----------------
>  1 file changed, 15 insertions(+), 16 deletions(-)
> 
> diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
> index 38c69c8..ffefbb5 100644
> --- a/fs/ocfs2/stack_user.c
> +++ b/fs/ocfs2/stack_user.c
> @@ -205,16 +205,10 @@ static struct ocfs2_live_connection *ocfs2_connection_find(const char *name)
>   * fill_super(), we can't get dupes here.
>   */
>  static int ocfs2_live_connection_new(struct ocfs2_cluster_connection *conn,
> -				     struct ocfs2_live_connection **c_ret,
> +				     struct ocfs2_live_connection *c,
>  				     enum ocfs2_connection_type type)
>  {
>  	int rc = 0;
> -	struct ocfs2_live_connection *c;
> -
> -	c = kzalloc(sizeof(struct ocfs2_live_connection), GFP_KERNEL);
> -	if (!c)
> -		return -ENOMEM;
> -
>  	mutex_lock(&ocfs2_control_lock);
>  	c->oc_conn = conn;
>  	c->oc_type = type;
> @@ -229,11 +223,6 @@ static int ocfs2_live_connection_new(struct ocfs2_cluster_connection *conn,
>  
>  	mutex_unlock(&ocfs2_control_lock);
>  
> -	if (!rc)
> -		*c_ret = c;
> -	else
> -		kfree(c);
> -
>  	return rc;
>  }
>  
> @@ -839,12 +828,18 @@ static int user_cluster_disconnect(struct ocfs2_cluster_connection *conn)
>  static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
>  {
>  	dlm_lockspace_t *fsdlm;
> -	struct ocfs2_live_connection *uninitialized_var(control);
> +	struct ocfs2_live_connection *lc = NULL;
>  	int rc = 0, ops_rv;
>  	enum ocfs2_connection_type type = NO_CONTROLD;
>  
>  	BUG_ON(conn == NULL);
>  
> +	lc = kzalloc(sizeof(struct ocfs2_live_connection), GFP_KERNEL);
> +	if (!lc) {
> +		rc = -ENOMEM;
> +		goto out;
> +	}
> +
>  	rc = dlm_new_lockspace(conn->cc_name, conn->cc_cluster_name,
>  			       DLM_LSFL_FS, DLM_LVB_LEN,
>  				&ocfs2_ls_ops, conn, &ops_rv, &fsdlm);
> @@ -863,7 +858,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
>  	}
>  	conn->cc_lockspace = fsdlm;
>  
> -	rc = ocfs2_live_connection_new(conn, &control, type);
> +	rc = ocfs2_live_connection_new(conn, lc, type);
>  	if (rc)
>  		goto out;
>  
> @@ -883,6 +878,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
>  			       running_proto.pv_minor);
>  			rc = -EPROTO;
>  			user_cluster_disconnect(conn);
> +			lc = NULL;
>  			goto out;
>  		}
>  
> @@ -890,13 +886,16 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
>  				DLM_LSFL_FS, DLM_LVB_LEN,
>  				NULL, NULL, NULL, &fsdlm);
>  		if (rc) {
> -			ocfs2_live_connection_drop(control);
> +			ocfs2_live_connection_drop(lc);
> +			lc = NULL;
>  			goto out;
>  		}
>  	}
>  
> -	conn->cc_private = control;
> +	conn->cc_private = lc;
>  out:
> +	if (rc && lc)
> +		kfree(lc);
>  	return rc;
>  }
>  
> -- 
> 1.8.1.4
> 
> 
> -- 
> Goldwyn
> 
> _______________________________________________
> Ocfs2-devel mailing list
> Ocfs2-devel at oss.oracle.com
> https://oss.oracle.com/mailman/listinfo/ocfs2-devel

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