Re: [RFC PATCH 0/7] Non-blockling buffered fs read (page cache only)

[Jeff Moyer]

Christoph Hellwig <hch@xxxxxxxxxxxxx> writes:

> Without the atomic WRITE SCATTERED use case adding the syscalls seems
> rather pointless, and I'd really avoid blocking nice software only
> features like the per-I/O nonblock flag (and the similarly trivial
> per-I/O sync option I have a prototype for) on it.

Andreas and Zach pointed out that the scatter/gather system calls also
help network file systems.  I'm not yet sure how much work it would be,
but it certainly seems worth considering readx/writex (or whatever we
want to call them) to avoid needlessly adding a ton of system calls.

Cheers,
Jeff
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