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    Subject[ 00/23] [Suspend2] Freezer Upgrade Patches
    Hi everyone.

    This set of patches represents the freezer upgrade patches from Suspend2.

    The key features of this changeset are:

    - Use of Christoph Lameter's todo list notifiers, which help with SMP
    - Splitting the freezing of kernel and userspace processes. Freezing
    currently suffers from a race because userspace processes can be
    submitting work for kernel threads, thereby stopping them from
    responding to freeze messages in a timely manner. The freezer can
    thus give up when it doesn't really need to. (This is not normally
    a problem only because load is not usually high).
    - The use of bdev freezing to ensure filesystems are properly frozen,
    thereby increasing the integrity of on-disk data in the case where
    a resume doesn't occur. This is also helpful in the case of Suspend2,
    where we don't atomically copy all memory, instead writing LRU pages

    Signed-off-by: Nigel Cunningham <>

    Nigel Cunningham nigel at suspend2 dot net
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      Last update: 2006-01-26 04:51    [W:0.017 / U:141.536 seconds]
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