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    SubjectRe: Invalidating dentries
    Jan Engelhardt <jengelh@linux01.gwdg.de> wrote:
    >
    > how can I invalidate all buffered/cached dentries so that ls -l /somefolder
    > will definitely go read the harddisk?

    Patch the kernel?

    There's no way of doing this apart from unmount/mount, or by forcing a ton
    of memory pressure and hoping that the dentries get reclaimed.

    A quick way of doing it would be to add a new mount option to the
    filesystem and call shrink_dcache_sb() from there. do `mount -o
    remount,shrink_dcache'.

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