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    SubjectRe: [PATCH 2/3] ext3 reservation allow turn off for specifed file
    Mingming Cao <cmm@us.ibm.com> wrote:
    >
    > Allow user shut down reservation-based allocation(using ioctl) on a specific file(e.g. for seeky random write).

    Applications currently pass a seeky-access hint into the kernel via
    posix_fadvise(POSIX_FADV_RANDOM). It would be nice to hook into that
    rather than adding an ext3-specific ioctl. Maybe just peeking at
    file->f_ra.ra_pages would suffice.

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