Re: fs/btrfs/dev-replace.c:486:17: sparse: incompatible types in comparison expression (different address spaces)

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> Hi Fengguang,
 
Hi Stefan!

> Assuming that your script performs a periodic git fetch and git reset,
> and then starts compile runs on different architectures, the only
> explanation that I have is that something went wrong with the git
> operation in your script. It looks like some C source files have been
> updated, but the header files are old. Some kind of inconsistency that
> either a git reset --hard should fix, or rm -rf . and git clone to start
> from the beginning.
> 
> Could you check it please?

That's definitely good suggestion! I've added the check before each make
to make sure the tree is in a clean state:

git_check_reset()
{       
        [[ $(git --no-pager diff) ]] && {
                notice "unexpected modified work tree"
                dump_stack
                git --no-pager diff
                git reset --hard
        }
}       

> And could you please point me to some documentation, how this (very
> useful !) service from Intel is working?

Sure (and thanks!). Here is a nice article:

KS2012: Kernel build/boot testing
https://lwn.net/Articles/514278/

Thanks,
Fengguang
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