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    SubjectRe: [PATCH] [16/19] HWPOISON: Enable .remove_error_page for migration aware file systems
    On Wed, Aug 05, 2009 at 11:36:43AM +0200, Andi Kleen wrote:
    >
    > Enable removing of corrupted pages through truncation
    > for a bunch of file systems: ext*, xfs, gfs2, ocfs2, ntfs
    > These should cover most server needs.
    >
    > I chose the set of migration aware file systems for this
    > for now, assuming they have been especially audited.
    > But in general it should be safe for all file systems
    > on the data area that support read/write and truncate.
    >
    > Caveat: the hardware error handler does not take i_mutex
    > for now before calling the truncate function. Is that ok?

    It will probably need locking, e.g. the iolock in XFS. I'll
    need to take a look at the actual implementation of
    generic_error_remove_page to make sense of this.

    Is there any way for us to test this functionality without introducing
    real hardware problems?




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