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| author | T.J. Mercier <tjmercier@google.com> | 2026-04-30 23:11:42 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-05-05 00:02:12 +0300 |
| commit | d8769544bde51b0ac980d10f8fe9f9fed6c95995 (patch) | |
| tree | bff21dfe9a127739aa7818e4033983fc5ac8b8b0 /Documentation | |
| parent | 93618edf753838a727dbff63c7c291dee22d656b (diff) | |
| download | linux-d8769544bde51b0ac980d10f8fe9f9fed6c95995.tar.xz | |
docs: cgroup-v1: Update charge-commit section
Commit 1d8f136a421f ("memcg/hugetlb: remove memcg hugetlb
try-commit-cancel protocol") removed mem_cgroup_commit_charge() and
mem_cgroup_cancel_charge(), but the docs still refer to those functions.
There is no longer any charge cancellation.
Update the docs to match the code.
Signed-off-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/cgroup-v1/memcg_test.rst | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/Documentation/admin-guide/cgroup-v1/memcg_test.rst b/Documentation/admin-guide/cgroup-v1/memcg_test.rst index 9f8e27355cba..7c7cd457cf69 100644 --- a/Documentation/admin-guide/cgroup-v1/memcg_test.rst +++ b/Documentation/admin-guide/cgroup-v1/memcg_test.rst @@ -47,21 +47,19 @@ Please note that implementation details can be changed. Called when swp_entry's refcnt goes down to 0. A charge against swap disappears. -3. charge-commit-cancel +3. charge-commit ======================= Memcg pages are charged in two steps: - mem_cgroup_try_charge() - - mem_cgroup_commit_charge() or mem_cgroup_cancel_charge() + - commit_charge() At try_charge(), there are no flags to say "this page is charged". at this point, usage += PAGE_SIZE. At commit(), the page is associated with the memcg. - At cancel(), simply usage -= PAGE_SIZE. - Under below explanation, we assume CONFIG_SWAP=y. 4. Anonymous |