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    SubjectHow does ext2 implement sparse files?


    For an university project, we had to write a toy filesystem (ext2-like),
    for which I would like to implement sparse file support. For this, I
    digged through the ext2 source code; but I could not find the point,
    where ext2 detects holes.

    As far as I can see from fs/buffer.c, an hole is a buffer_head which is
    not mapped, but uptodate. But I cannot find a relevant source line,
    where ext2 makes usage of this information.

    Any hints would be greatly appreciated,

    [Please CC me on answers, I'm not subscribed]

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      Last update: 2008-01-31 16:37    [W:0.021 / U:2.852 seconds]
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