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    SubjectRe: ext4: Fix data corruption with multi-block writepages support
    On Fri, Feb 04, 2011 at 10:40:47PM +0000, Matt wrote:
    >
    > So that means that the file-corruption which existed until 2.6.37-rc6
    > and got triggered (for me) more easily via "dm crypt: scale to
    > multiple CPUs"
    > is fixed now ?

    Well, a patch exists for it that will be merged into 2.6.38.

    > That should give ext4 a nice speedup for >=2.6.38 :)

    I'm not going to make it be the default for 2.6.38, since it's fairly
    late in the -rc features. People who want it can explicitly enable it
    using the mount option mblk_io_submit, though. (And let me know your
    success stories! :-) I will be enabling it as the default in
    2.6.39-rc1.

    > Reported-by: Matthias Bayer <jackdachef <at> gmail <dot> com >

    Sure!

    - Ted


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