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SubjectRe: [PATCH] hugetlb: fix CONFIG_CGROUP_HUGETLB ifdefs
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On 2/14/20 1:00 PM, Mina Almasry wrote:
> On Fri, Feb 14, 2020 at 12:46 PM Mina Almasry <almasrymina@google.com> wrote:
>>
>> Fixes an #ifdef bug in the patch referred to below that was
>> causing a build error when CONFIG_DEBUG_VM &&
>> !CONFIG_CCGROUP_HUGETLB.

Hi Mina,

I don't know if this was supposed to fix the 2 build reports that I made,
but this does not apply cleanly to mmotm (and it's a reply email so it's
more difficult to apply anyway):

Applying patch mm-hugetlb-fix-CONFIG_CGROUP_HUGETLB.patch
patching file mm/hugetlb.c
Hunk #1 succeeded at 289 with fuzz 1.
Hunk #2 succeeded at 325 with fuzz 2.
Hunk #3 FAILED at 435.
1 out of 3 hunks FAILED -- rejects in file mm/hugetlb.c


>> Fixes: b5f16a533ce8a ("hugetlb: support file_region coalescing again")
>> Signed-off-by: Mina Almasry <almasrymina@google.com>
>> Cc: David Rientjes <rientjes@google.com>
>> Cc: Greg Thelen <gthelen@google.com>
>> Cc: Mike Kravetz <mike.kravetz@oracle.com>
>> Cc: Shakeel Butt <shakeelb@google.com>
>> Cc: Andrew Morton <akpm@linux-foundation.org>
>> ---
>> mm/hugetlb.c | 8 +++++---
>> 1 file changed, 5 insertions(+), 3 deletions(-)
>>
>> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
>> index ee6d262fe6ac0..95d34c58981d2 100644
>> --- a/mm/hugetlb.c
>> +++ b/mm/hugetlb.c
>> @@ -289,7 +289,7 @@ static bool has_same_uncharge_info(struct file_region *rg,
>> #endif
>> }
>>
>> -#ifdef CONFIG_DEBUG_VM
>> +#if defined(CONFIG_DEBUG_VM) && defined(CONFIG_CGROUP_HUGETLB)
>> static void dump_resv_map(struct resv_map *resv)
>> {
>> struct list_head *head = &resv->regions;
>> @@ -325,6 +325,10 @@ static void check_coalesce_bug(struct resv_map *resv)
>> }
>> }
>> }
>> +#else
>> +static void check_coalesce_bug(struct resv_map *resv)
>> +{
>> +}
>> #endif
>>
>> static void coalesce_file_region(struct resv_map *resv, struct file_region *rg)
>> @@ -431,9 +435,7 @@ static long add_reservation_in_range(struct resv_map *resv, long f, long t,
>> }
>>
>> VM_BUG_ON(add < 0);
>> -#ifdef CONFIG_DEBUG_VM
>> check_coalesce_bug(resv);
>> -#endif
>> return add;
>> }
>>
>> --
>> 2.25.0.265.gbab2e86ba0-goog

thanks.
--
~Randy

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