linux-kernel - Re: [PATCH] staging: android: lowmemorykiller.c: Fix checkpatch warning

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Date:   Thu, 1 Sep 2016 17:36:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Andrey Utkin <andrey_utkin@...tmail.com>
Cc:     Anson Jacob <ansonjacob.aj@...il.com>,
        Staging List <devel@...verdev.osuosl.org>, arve@...roid.com,
        riandrews@...roid.com, Kernel List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: android: lowmemorykiller.c: Fix checkpatch
 warning

On Thu, Aug 25, 2016 at 06:26:48PM +0300, Andrey Utkin wrote:
> On Thu, Aug 25, 2016 at 11:10:25AM -0400, Anson Jacob wrote:
> > Fix checkpatch.pl 'line over 80 characters' warning
> > 
> > Signed-off-by: Anson Jacob <ansonjacob.aj@...il.com>
> > ---
> >  drivers/staging/android/lowmemorykiller.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
> > index 45a1b4e..80d7adf 100644
> > --- a/drivers/staging/android/lowmemorykiller.c
> > +++ b/drivers/staging/android/lowmemorykiller.c
> > @@ -92,8 +92,8 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
> >  	int array_size = ARRAY_SIZE(lowmem_adj);
> >  	int other_free = global_page_state(NR_FREE_PAGES) - totalreserve_pages;
> >  	int other_file = global_node_page_state(NR_FILE_PAGES) -
> > -						global_node_page_state(NR_SHMEM) -
> > -						total_swapcache_pages();
> > +				global_node_page_state(NR_SHMEM) -
> > +				total_swapcache_pages();
> >  
> >  	if (lowmem_adj_size < array_size)
> >  		array_size = lowmem_adj_size;
> 
> Indeed original alignment on opening brace here doesn't make sense.
> I don't mind if your patch gets accepted, but out of curiosity I have opened
> this file in vim with kernel coding style plugin loaded
> (https://github.com/vivien/vim-linux-coding-style), selected the affected
> lines, and reindented the selection by pressing 'gq'. It ended up with this,
> being both shorter and simpler:
> 
> diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
> index 45a1b4e..3aef467 100644
> --- a/drivers/staging/android/lowmemorykiller.c
> +++ b/drivers/staging/android/lowmemorykiller.c
> @@ -92,8 +92,7 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
>  	int array_size = ARRAY_SIZE(lowmem_adj);
>  	int other_free = global_page_state(NR_FREE_PAGES) - totalreserve_pages;
>  	int other_file = global_node_page_state(NR_FILE_PAGES) -
> -						global_node_page_state(NR_SHMEM) -
> -						total_swapcache_pages();
> +		global_node_page_state(NR_SHMEM) - total_swapcache_pages();

The original patch here is nicer to read, don't you think?

thanks,

greg k-h