linux-kernel - Re: [PATCH] scsi: libcxgbi: use kvzalloc instead of opencoded kzalloc/vzalloc

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Date:   Fri, 31 Jul 2020 14:58:36 -0700
From:   Joe Perches <joe@...ches.com>
To:     Denis Efremov <efremov@...ux.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: libcxgbi: use kvzalloc instead of opencoded
 kzalloc/vzalloc

On Sat, 2020-08-01 at 00:55 +0300, Denis Efremov wrote:
> Remove cxgbi_alloc_big_mem(), cxgbi_free_big_mem() functions
> and use kvzalloc/kvfree instead.

Sensible, thanks.

> diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
[]
> @@ -77,9 +77,9 @@ int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base,
>  {
>  	struct cxgbi_ports_map *pmap = &cdev->pmap;
>  
> -	pmap->port_csk = cxgbi_alloc_big_mem(max_conn *
> -					     sizeof(struct cxgbi_sock *),
> -					     GFP_KERNEL);
> +	pmap->port_csk = kvzalloc(array_size(max_conn,
> +					     sizeof(struct cxgbi_sock *)),
> +				  GFP_KERNEL);

missing __GFP_NOWARN

> diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h
[]
> @@ -537,22 +537,6 @@ struct cxgbi_task_data {
>  #define iscsi_task_cxgbi_data(task) \
>  	((task)->dd_data + sizeof(struct iscsi_tcp_task))
>  
> -static inline void *cxgbi_alloc_big_mem(unsigned int size,
> -					gfp_t gfp)
> -{
> -	void *p = kzalloc(size, gfp | __GFP_NOWARN);