Messages in this thread | | | Subject | Re: [PATCH v12 5/9] hugetlb_cgroup: add accounting for shared mappings | From | Mike Kravetz <> | Date | Tue, 18 Feb 2020 10:07:19 -0800 |
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On 2/11/20 1:31 PM, Mina Almasry wrote: > For shared mappings, the pointer to the hugetlb_cgroup to uncharge lives > in the resv_map entries, in file_region->reservation_counter. > > After a call to region_chg, we charge the approprate hugetlb_cgroup, and if > successful, we pass on the hugetlb_cgroup info to a follow up region_add call. > When a file_region entry is added to the resv_map via region_add, we put the > pointer to that cgroup in file_region->reservation_counter. If charging doesn't > succeed, we report the error to the caller, so that the kernel fails the > reservation. > > On region_del, which is when the hugetlb memory is unreserved, we also uncharge > the file_region->reservation_counter. > > Signed-off-by: Mina Almasry <almasrymina@google.com>
With addition of the build fix, Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- Mike Kravetz
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