Re: [PATCH] zram: include linux/err.h

From: Sergey Senozhatsky
Date: Tue Mar 18 2014 - 14:39:39 EST

Hello Arnd,

On (03/15/14 21:26), Arnd Bergmann wrote:
> On Saturday 15 March 2014, Sergey Senozhatsky wrote:
> > On (03/15/14 10:40), Arnd Bergmann wrote:
> > > The zram driver uses the ERR_PTR macro defined in <linux/err.h>
> > > and relies on this header to be included implicitly through
> > > other headers, which is not (always) the case on the ARM architecture.
> > >
> >
> > returned from zcomp ERR_PTR is checked and used in zram_drv.c, should
> > in this case there also be inclusion of err.h in zram_drv.h? if so, it
> > probably makes sense to move inclusion of err.h to zcomp.h, which is
> > included both in zcomp.c and zram_drv.c
> >
> The normal convention is to only include headers from other headers if
> that is required by the contents of the header itself.
> Following the common conventions, it's better to include linux/err.h
> in both zram_drv.c and zcomp.c, but not in zram_drv.h.


may I ask you to resend the patch with linux/err.h included
in both zram_drv.c and zcomp.c?


> I didn't do that in my patch, because I only got a build error in
> one of the two files.
> Arnd
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