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.
v3->v4: Revert three patches to replace previous patch[1-2] suggested by
Vitaly.
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 (6):
Revert "frontswap: remove support for multiple ops"
Revert "mm: mark swap_lock and swap_active_head static"
Revert "frontswap: simplify 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/frontswap.h | 3 +-
include/linux/swapfile.h | 2 +
mm/frontswap.c | 91 +++++++++++++++++++++++++++++++++------
mm/swapfile.c | 4 +-
mm/zswap.c | 85 +++++++++++++++++++++++++-----------
5 files changed, 145 insertions(+), 40 deletions(-)
--
2.25.1
