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  • configfd() and shifting bind mounts [LWN.net]

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    lwn.net

    The 5.2 kernel saw the addition of an extensive new API for the mounting (and remounting) of filesystems; this article covered an early version of that API. Since then, work in this area has mostly focused on enabling filesystems to support this API fully. James Bottomley has taken a look at this API as part of the job of redesigning his shiftfs filesystem and found it to be incomplete. What has followed is a significant set of changes that promise to simplify the mount API — though it turns out that "simple" is often in the eye of the beholder.

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