linux-kernel - Re: [PATCH 12/15] staging/lustre: Add spaces preferred around that '{+,-,*,/,|,<<,>>,&}'

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Date:	Sat, 23 Jul 2016 10:31:12 -0700
From:	Joe Perches <joe@...ches.com>
To:	Oleg Drokin <green@...uxhacker.ru>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org,
	Andreas Dilger <andreas.dilger@...el.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lustre Development List <lustre-devel@...ts.lustre.org>,
	Emoly Liu <emoly.liu@...el.com>
Subject: Re: [PATCH 12/15] staging/lustre: Add spaces preferred around that
 '{+,-,*,/,|,<<,>>,&}'

On Sat, 2016-07-23 at 02:37 -0400, Oleg Drokin wrote:
> From: Emoly Liu <emoly.liu@...el.com>

unrelated trivial notes:

> diff --git a/drivers/staging/lustre/lustre/obdecho/echo_internal.h b/drivers/staging/lustre/lustre/obdecho/echo_internal.h
[]
> @@ -33,9 +33,9 @@
>  
>  /* The persistent object (i.e. actually stores stuff!) */
>  #define ECHO_PERSISTENT_OBJID    1ULL
> -#define ECHO_PERSISTENT_SIZE     ((__u64)(1<<20))
> +#define ECHO_PERSISTENT_SIZE     ((__u64)(1 << 20))

This is generally an error-prone pattern as the cast is
done after the shift.

Perhaps better is using a specific type

#define ECHO_PERSISTENT_SIZE		(1ULL << 20)

And lustre seems to use types with unnecessary __ prefixes.