| Message ID | 20220827104600.1813214-1-liushixin2@huawei.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Delay the initializaton of zswap | expand |
On Sat, 27 Aug 2022 18:45:55 +0800 Liu Shixin <liushixin2@huawei.com> wrote: > In the initialization of zswap, about 18MB memory will be allocated for > zswap_pool. Since not all users use zswap, the memory may be wasted. Save > the memory for these users by delaying the initialization of zswap to > first enablement. > > v2->v3: Fix frontswap_ops NULL reported by Nathan and add init for online > swap device in backend register. > v1->v2: Change init_zswap to zswap_init suggested by Andrew. Thanks. Konrad, could you please take a look for the frontswap changes?
In the initialization of zswap, about 18MB memory will be allocated for zswap_pool. Since not all users use zswap, the memory may be wasted. Save the memory for these users by delaying the initialization of zswap to first enablement. v2->v3: Fix frontswap_ops NULL reported by Nathan and add init for online swap device in backend register. v1->v2: Change init_zswap to zswap_init suggested by Andrew. Liu Shixin (5): frontswap: skip frontswap_ops init if zswap init failed. frontswap: invoke ops->init for online swap device in frontswap_register_ops mm/zswap: replace zswap_init_{started/failed} with zswap_init_state mm/zswap: delay the initializaton of zswap until the first enablement mm/zswap: skip confusing print info include/linux/swapfile.h | 2 ++ mm/frontswap.c | 50 +++++++++++++++++++++++++- mm/swapfile.c | 4 +-- mm/zswap.c | 77 ++++++++++++++++++++++++++++++---------- 4 files changed, 111 insertions(+), 22 deletions(-)