Re: [PATCH] headers: untangle kmemleak.h from mm.h

On 02/11/2018 11:27 PM, Ingo Molnar wrote:

* Randy Dunlap [off-list ref] wrote:

quoted

From: Randy Dunlap <redacted>

Currently <linux/slab.h> #includes <linux/kmemleak.h> for no obvious
reason. It looks like it's only a convenience, so remove kmemleak.h
from slab.h and add <linux/kmemleak.h> to any users of kmemleak_*
that don't already #include it.
Also remove <linux/kmemleak.h> from source files that do not use it.

This is tested on i386 allmodconfig and x86_64 allmodconfig. It
would be good to run it through the 0day bot for other $ARCHes.
I have neither the horsepower nor the storage space for the other
$ARCHes.

[slab.h is the second most used header file after module.h; kernel.h
is right there with slab.h. There could be some minor error in the
counting due to some #includes having comments after them and I
didn't combine all of those.]

This is Lingchi patch #1 (death by a thousand cuts, applied to kernel
header files).

Signed-off-by: Randy Dunlap <redacted>

Nice find:

Reviewed-by: Ingo Molnar <mingo@kernel.org>

I agree that it needs to go through 0-day to find any hidden dependencies we might 
have grown due to this.

Andrew,

This patch has mostly survived both 0day and ozlabs multi-arch testing with
2 build errors being reported by both of them.  I have posted patches for
those separately. (and are attached here)

other-patch-1:
lkml.kernel.org/r/5664ced1-a0cd-7e4e-71b6-9c3a97d68927@infradead.org
"lib/test_firmware: add header file to prevent build errors"

other-patch-2:
lkml.kernel.org/r/b3b7eebb-0e9f-f175-94a8-379c5ddcaa86@infradead.org
"integrity/security: fix digsig.c build error"

Will you see that these are merged or do you want me to repost them?

thanks,
-- 
~Randy