lkml.org 
[lkml]   [2020]   [Feb]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v12 5/9] hugetlb_cgroup: add accounting for shared mappings
On Tue, 11 Feb 2020, 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>
>

Does this develop a dependency on hugetlb_cgroup.h in hugetlb.h? Or maybe
we only need a forward declaration of struct file_region there?

\
 
 \ /
  Last update: 2020-02-16 02:30    [W:0.104 / U:2.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site