linux-kernel - Re: [PATCH V7 5/5] testing

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Date:   Tue, 15 Jan 2019 16:55:57 +0530
From:   "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
To:     akpm@...ux-foundation.org, Michal Hocko <mhocko@...nel.org>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        David Gibson <david@...son.dropbear.id.au>,
        Andrea Arcangeli <aarcange@...hat.com>, mpe@...erman.id.au
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH V7 5/5] testing

You can ignore this one.

On 1/14/19 3:24 PM, Aneesh Kumar K.V wrote:
> ---
>   mm/gup.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/gup.c b/mm/gup.c
> index 6e8152594e83..91849c39931a 100644
> --- a/mm/gup.c
> +++ b/mm/gup.c
> @@ -1226,7 +1226,7 @@ static long check_and_migrate_cma_pages(unsigned long start, long nr_pages,
>   		 * be pinning these entries, we might as well move them out
>   		 * of the CMA zone if possible.
>   		 */
> -		if (is_migrate_cma_page(pages[i])) {
> +		if (true || is_migrate_cma_page(pages[i])) {
>   
>   			struct page *head = compound_head(pages[i]);
>   
> @@ -1256,6 +1256,7 @@ static long check_and_migrate_cma_pages(unsigned long start, long nr_pages,
>   		for (i = 0; i < nr_pages; i++)
>   			put_page(pages[i]);
>   
> +		pr_emerg("migrating nr_pages");
>   		if (migrate_pages(&cma_page_list, new_non_cma_page,
>   				  NULL, 0, MIGRATE_SYNC, MR_CONTIG_RANGE)) {
>   			/*
> @@ -1274,10 +1275,11 @@ static long check_and_migrate_cma_pages(unsigned long start, long nr_pages,
>   		nr_pages = get_user_pages(start, nr_pages, gup_flags, pages, vmas);
>   		if ((nr_pages > 0) && migrate_allow) {
>   			drain_allow = true;
> -			goto check_again;
> +			//goto check_again;
>   		}
>   	}
>   
> +	pr_emerg("Returning with %ld\n", nr_pages);
>   	return nr_pages;
>   }
>   #else
>