linux-kernel - [PATCH -next v4 0/6] Delay the initializaton of zswap

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Message-ID: <20220829132302.3367054-1-liushixin2@huawei.com>
Date:   Mon, 29 Aug 2022 21:22:56 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Seth Jennings <sjenning@...hat.com>,
        Dan Streetman <ddstreet@...e.org>,
        Vitaly Wool <vitaly.wool@...sulko.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nathan Chancellor <nathan@...nel.org>,
        "Christoph Hellwig" <hch@....de>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        Liu Shixin <liushixin2@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH -next v4 0/6] Delay the initializaton of zswap

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