linux-kernel - Re: [PATCH v8 5/9] hugetlb: disable region_add file

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Message-ID: <010d5a90-3ebf-30e5-8829-a61f01b6f620@gmail.com>
Date:   Sun, 17 Nov 2019 19:03:16 +0800
From:   Wenkuan Wang <wwk0817@...il.com>
To:     Mina Almasry <almasrymina@...gle.com>, mike.kravetz@...cle.com
Cc:     shuah@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org, cgroups@...r.kernel.org,
        aneesh.kumar@...ux.vnet.ibm.com
Subject: Re: [PATCH v8 5/9] hugetlb: disable region_add file_region coalescing



On 10/30/19 9:36 AM, Mina Almasry wrote:
> /* Must be called with resv->lock held. Calling this with count_only == true
> * will count the number of pages to be added but will not modify the linked
> - * list.
> + * list. If regions_needed != NULL and count_only == true, then regions_needed
> + * will indicate the number of file_regions needed in the cache to carry out to
> + * add the regions for this range.
> */
> static long add_reservation_in_range(struct resv_map *resv, long f, long t,

Hi Mina,

Would you please share which tree this patch set used? this patch 5/9 can't be
applied with Linus's tree and add_reservation_in_range can't be found.

Thanks
Wenkuan

> - bool count_only)
> + long *regions_needed, bool count_only)
> {
> - long chg = 0;
> + long add = 0;
> struct list_head *head = &resv->regions;
> + long last_accounted_offset = f;
> struct file_region *rg = NULL, *trg = NULL, *nrg = NULL;
> - /* Locate the region we are before or