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    SubjectRe: [dm-crypt] INFO: task mount:11202 blocked for more than 120 seconds
    Date
    On Monday 17 March 2008 18:36:09 Alasdair G Kergon wrote:
    > Latest version for everyone to try:
    >
    > From: Milan Broz <mbroz@redhat.com>
    >
    > Fix regression in dm-crypt introduced in commit
    > 3a7f6c990ad04e6f576a159876c602d14d6f7fef
    > (dm crypt: use async crypto).
    >
    > If write requests need to be split into pieces, the code must not
    > process them in parallel because the crypto context cannot be shared.
    > So there can be parallel crypto operations on one part of the write,
    > but only one write bio can be processed at a time.
    >
    > This is not optimal and the workqueue code need to be optimized for
    > parallel processing, but for now it solves problem without affecting
    > the performance of synchronous crypto operation (most of current
    > dm-crypt users).
    >
    > Signed-off-by: Milan Broz <mbroz@redhat.com>
    > Signed-off-by: Alasdair G Kergon <agk@redhat.com>
    Tested-by: Christian Lamparter <chunkeey@web.de>

    Well, the dm-crypt regressions seems to be gone. :)
    Thanks for your work & time!

    Regards,
    Christian


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