Re: [PATCH] mm: filemap: remove include of hardirq.h

[Yang Shi]

On 11/4/17 6:47 AM, Matthew Wilcox wrote:
> On Sat, Nov 04, 2017 at 02:47:48AM +0800, Yang Shi wrote:
> > in_atomic() has been moved to include/linux/preempt.h, and the filemap.c
> > doesn't use in_atomic() directly at all, so it sounds unnecessary to
> > include hardirq.h.
> > With removing hardirq.h, around 32 bytes can be saved for x86_64 bzImage
> > with allnoconfig.
>
> Wait, what?  How would including an unused header file increase the size
> of the final image?

Sorry for the wrong message, I double checked again with building kernel 
a couple of times then comparing the size, there is no change. Will 
remove this from the commit log.

Yang

>