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    SubjectRe: [PATCH] [Request for inclusion] Filesystem in Userspace
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    > Measured under what conditions?

    dorka:/home/miko/fuse-bugfix# touch /tmp/fusenull
    dorka:/home/miko/fuse-bugfix# example/null /tmp/fusenull
    dorka:/home/miko/fuse-bugfix# time dd if=/dev/zero of=/tmp/fusenull bs=4096 count=262144
    262144+0 records in
    262144+0 records out
    1073741824 bytes transferred in 12.591578 seconds (85274604 bytes/sec)

    real 0m12.662s
    user 0m0.189s
    sys 0m8.156s
    dorka:/home/miko/fuse-bugfix# fusermount -u /tmp/fusenull

    fusenull is a /dev/null like filesystem implemented with the libfuse
    API (see fuse sources).

    > There may be only one dirty page in the whole system and it may be the
    > one backed by FUSE. Now yes, if it was not backed by FUSE, I would be in
    > trouble -- but the OOM killer would get me out. It will *NOT* get me out
    > with fuse, because it thinks the page will be cleaned, which it won't.

    OK, I see your point. But can't the memory subsystem be tought, that
    those pages are not guaranteed to be written back in a limited time?

    Miklos
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