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    Subject[PATCH v6 0/5] zram/zsmalloc promotion
    Date
    It's 6th trial of zram/zsmalloc promotion.
    [patch 5, zram: promote zram from staging] explains why we need zram.

    Main reason to block promotion is there was no review of zsmalloc part
    while Jens already acked zram part.

    At that time, zsmalloc was used for zram, zcache and zswap so everybody
    wanted to make it general and at last, Mel reviewed it.
    Most of review was related to zswap dumping mechanism which can pageout
    compressed page into swap in runtime and zswap gives up using zsmalloc
    and invented a new wheel, zbud. Other reviews were not major.
    http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/04334.html

    Zcache don't use zsmalloc either so only zsmalloc user is zram now.
    So I think there is no concern any more.

    Patch 1 adds new Kconfig for zram to use page table method instead
    of copy. Andrew suggested it.

    Patch 2 adds lots of commnt for zsmalloc.

    Patch 3 moves zsmalloc under driver/staging/zram because zram is only
    user for zram now.

    Patch 4 makes unmap_kernel_range exportable function because zsmalloc
    have used map_vm_area which is already exported function but zsmalloc
    need to use unmap_kernel_range and it should be built with module.

    Patch 5 moves zram from driver/staging to driver/blocks, finally.

    It touches mm, staging, blocks so I am not sure who is right position
    maintainer so I will Cc Andrw, Jens and Greg.

    This patch is based on next-20130813.

    Thanks.

    Minchan Kim (4):
    zsmalloc: add Kconfig for enabling page table method
    zsmalloc: move it under zram
    mm: export unmap_kernel_range
    zram: promote zram from staging

    Nitin Cupta (1):
    zsmalloc: add more comment

    drivers/block/Kconfig | 2 +
    drivers/block/Makefile | 1 +
    drivers/block/zram/Kconfig | 37 +
    drivers/block/zram/Makefile | 3 +
    drivers/block/zram/zram.txt | 71 ++
    drivers/block/zram/zram_drv.c | 987 +++++++++++++++++++++++++++
    drivers/block/zram/zsmalloc.c | 1084 ++++++++++++++++++++++++++++++
    drivers/staging/Kconfig | 4 -
    drivers/staging/Makefile | 2 -
    drivers/staging/zram/Kconfig | 25 -
    drivers/staging/zram/Makefile | 3 -
    drivers/staging/zram/zram.txt | 77 ---
    drivers/staging/zram/zram_drv.c | 984 ---------------------------
    drivers/staging/zram/zram_drv.h | 125 ----
    drivers/staging/zsmalloc/Kconfig | 10 -
    drivers/staging/zsmalloc/Makefile | 3 -
    drivers/staging/zsmalloc/zsmalloc-main.c | 1063 -----------------------------
    drivers/staging/zsmalloc/zsmalloc.h | 43 --
    include/linux/zram.h | 123 ++++
    include/linux/zsmalloc.h | 52 ++
    mm/vmalloc.c | 1 +
    21 files changed, 2361 insertions(+), 2339 deletions(-)
    create mode 100644 drivers/block/zram/Kconfig
    create mode 100644 drivers/block/zram/Makefile
    create mode 100644 drivers/block/zram/zram.txt
    create mode 100644 drivers/block/zram/zram_drv.c
    create mode 100644 drivers/block/zram/zsmalloc.c
    delete mode 100644 drivers/staging/zram/Kconfig
    delete mode 100644 drivers/staging/zram/Makefile
    delete mode 100644 drivers/staging/zram/zram.txt
    delete mode 100644 drivers/staging/zram/zram_drv.c
    delete mode 100644 drivers/staging/zram/zram_drv.h
    delete mode 100644 drivers/staging/zsmalloc/Kconfig
    delete mode 100644 drivers/staging/zsmalloc/Makefile
    delete mode 100644 drivers/staging/zsmalloc/zsmalloc-main.c
    delete mode 100644 drivers/staging/zsmalloc/zsmalloc.h
    create mode 100644 include/linux/zram.h
    create mode 100644 include/linux/zsmalloc.h

    --
    1.7.9.5



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