Should FUSE set IO_FLUSHER for the userspace process?

[Nikolaus Rath <Nikolaus@xxxxxxxx>]

Hi,

Should the FUSE kernel driver perhaps set PR_SET_IO_FLUSHER for the FUSE
userspace process daemon when a connection is opened?

If I understand correctly, this is necessary to avoid a deadlocks if the
kernel needs to reclaim memory that has to be written back through FUSE.

I don't think it's possible to do this in userspace, since the process
may lack the necessary capabilities.

Best,
-Nikolaus

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