[Buildroot] [PATCH] ubifs: Fix regression in ubifs_readdir()

[Arnout Vandecappelle]

On 02-11-16 23:49, Jörg Krause wrote:
> On Wed, 2016-11-02 at 21:49 +0100, Thomas Petazzoni wrote:
>> Hello,
>>
>> On Wed, 02 Nov 2016 20:56:59 +0100, Jörg Krause wrote:
>>
>>>> This is *really* bad. Which Buildroot version are you using?  
>>>
>>> 2016.11 #
>>>
>>> Note that I am using Buildroot as a submodule [1] and I needed to
>>> port
>>> the br2-external tree. Maybe I messed something up?
>>>
>>>> Are you able to reproduce the bad ccache behavior here?  
>>>
>>> Yes, I am. Linux kernel source directory is located locally and the
>>> path is set using LINUX_OVERRIDE_SRCDIR in local.mk.
>>>
>>> 1/ Checkout Linux kernel version 4.7.10
>>> 2/ make linux-dirclean all
>>> 3/ Booted Linux version is 4.7.10
>>>
>>> 4/ Checkout Linux kernel version 4.8.5
>>> 5/ make linux-dirclean all
>>> 6/ Booted Linux version is still 4.7.10
>>
>> And this scenario works fine with ccache *disabled*, but breaks when
>> you enable ccache support in Buildroot?
> 
> Yes.

 I can't reproduce this. I've got a nice mix of cache misses and cache hits when
building a different version, and version.o is definitely a cache miss.

 Can you double-check the version in output/build/linux-custom/init/version.o?
And the one in output/build/linux-custom/include/generated/utsrelease.h?

 Hm, hang on, is there maybe a utsrelease.h that ends up in your staging dir and
that is used by ccache?

 Regards,
 Arnout


-- 
Arnout Vandecappelle                          arnout at mind be
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