Doug / smarc-fsl-linux-kernel

11 Jul, 2013

1 commit

  • 2b2811178   zswap: add to mm/ ... Browse Code ยป

    zswap is a thin backend for frontswap that takes pages that are in the
    process of being swapped out and attempts to compress them and store
    them in a RAM-based memory pool. This can result in a significant I/O
    reduction on the swap device and, in the case where decompressing from
    RAM is faster than reading from the swap device, can also improve
    workload performance.

    It also has support for evicting swap pages that are currently
    compressed in zswap to the swap device on an LRU(ish) basis. This
    functionality makes zswap a true cache in that, once the cache is full,
    the oldest pages can be moved out of zswap to the swap device so newer
    pages can be compressed and stored in zswap.

    This patch adds the zswap driver to mm/

    Signed-off-by: Seth Jennings
    Acked-by: Rik van Riel
    Cc: Greg Kroah-Hartman
    Cc: Nitin Gupta
    Cc: Minchan Kim
    Cc: Konrad Rzeszutek Wilk
    Cc: Dan Magenheimer
    Cc: Robert Jennings
    Cc: Jenifer Hopper
    Cc: Mel Gorman
    Cc: Johannes Weiner
    Cc: Larry Woodman
    Cc: Benjamin Herrenschmidt
    Cc: Dave Hansen
    Cc: Joe Perches
    Cc: Joonsoo Kim
    Cc: Cody P Schafer
    Cc: Hugh Dickens
    Cc: Paul Mackerras
    Cc: Fengguang Wu
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Seth Jennings