Re: how mmap() works?

[Tim Hockin]

> Without syncing, Linux writes whenever it thinks it's appropriate, e.g.
> when pages have to be freed (I think also when the bdflush writes back
> data, i.e. every 30 seconds by default).

what about mmap() on non-filesystem files (/dev/mem, /proc/bus/pci...) ?

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