linux-kernel - Re: jemalloc testsuite stalls in memset

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Message-ID: <87d1gshscr.fsf@suse.de>
Date:   Fri, 16 Dec 2016 15:16:20 +0100
From:   Andreas Schwab <schwab@...e.de>
To:     Minchan Kim <minchan@...nel.org>
Cc:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <mbrugger@...e.de>,
        <linux-mm@...ck.org>, Jason Evans <je@...com>
Subject: Re: jemalloc testsuite stalls in memset

On Dez 16 2016, Minchan Kim <minchan@...nel.org> wrote:

> Below helps?
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index e10a4fe..dc37c9a 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -1611,6 +1611,7 @@ int madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
>  			tlb->fullmm);
>  		orig_pmd = pmd_mkold(orig_pmd);
>  		orig_pmd = pmd_mkclean(orig_pmd);
> +		orig_pmd = pmd_wrprotect(orig_pmd);
>  
>  		set_pmd_at(mm, addr, pmd, orig_pmd);
>  		tlb_remove_pmd_tlb_entry(tlb, pmd, addr);

Thanks, this fixes the issue (tested with 4.9).

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@...e.de
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