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    SubjectRe: [PATCH] config/mips: support zswap function
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    On Wed, Mar 20, 2024 at 02:44:21PM +0800, mengfanhui wrote:
    > Zswap and zsmalloc are compression methods, and kernel configuration can be configured simultaneously.
    > zbud is an algorithm, and users can use that method if they want to use it.It won't affect each other.

    Zswap compressed swapped out pages in-memory. To store those compressed
    pages, it uses one of three allocators that implement the zpool API:
    zbud, z3fold, and zsmalloc. In that sense, zsmalloc is comparable to
    zbud, not zswap. I suspect you are mixing up zsmalloc and zram.

    Anyway, zsmalloc is the default allocator and should be better for
    almost all use cases. So unless you have a very good reason to use zbud
    over zsmalloc, please do not use zbud. We are trying to deprecate zbud
    and z3fold.

    >
    > 在 2024/3/20 14:00, Yosry Ahmed 写道:
    > > On Fri, Jan 26, 2024 at 03:55:47PM +0800, mengfanhui wrote:
    > >> Solution /sys/module/zswap/parameters/enabled attribute node
    > >> does not exist issue,handle zpool zbud initialization failed,
    > >> open CONFIG_ZSWAP CONFIG_ZPOOL CONFIG_ZBUD configuration,manual
    > >> zswap function by /sys/module/zswap/parameters/enabled file
    > >>
    > >> Signed-off-by: mengfanhui <mengfanhui@kylinos.cn>
    > >> ---
    > >> arch/mips/configs/generic_defconfig | 3 +++
    > >> 1 file changed, 3 insertions(+)
    > >>
    > >> diff --git a/arch/mips/configs/generic_defconfig b/arch/mips/configs/generic_defconfig
    > >> index 071e2205c7ed..14884df392f4 100644
    > >> --- a/arch/mips/configs/generic_defconfig
    > >> +++ b/arch/mips/configs/generic_defconfig
    > >> @@ -13,6 +13,9 @@ CONFIG_CGROUP_DEVICE=y
    > >> CONFIG_CGROUP_CPUACCT=y
    > >> CONFIG_NAMESPACES=y
    > >> CONFIG_USER_NS=y
    > >> +CONFIG_ZSWAP=y
    > >> +CONFIG_ZPOOL=y
    > >> +CONFIG_ZBUD=y
    > >
    > > Any reason for choosing zbud over zsmalloc, the default zswap allocator?
    > >
    > >> CONFIG_SCHED_AUTOGROUP=y
    > >> CONFIG_BLK_DEV_INITRD=y
    > >> CONFIG_BPF_SYSCALL=y
    > >> --
    > >> 2.25.1
    > >>

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