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    SubjectRe: [Bad page] trying to free locked page? (Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6.26-rc5-mm3)
    > > > I got this bug while migrating pages only a few times
    > > > via memory_migrate of cpuset.
    > > >
    > > > Unfortunately, even if this patch is applied,
    > > > I got bad_page problem after hundreds times of page migration
    > > > (I'll report it in another mail).
    > > > But I believe something like this patch is needed anyway.
    > > >
    > >
    > > I got bad_page after hundreds times of page migration.
    > > It seems that a locked page is being freed.
    > >
    > Good catch, and I think your investigation in the last e-mail was correct.
    > I'd like to dig this...but it seems some kind of big fix is necessary.
    > Did this happen under page-migraion by cpuset-task-move test ?

    Indeed!

    I guess lee's unevictable infrastructure and nick's specurative pagecache
    is conflicted.
    I'm investigating deeply now.





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