Re: Memory mapped files question

[Martin J. Bligh]

> Martin, something which was not mentioned last week (I've just checked).
> 
> It's OK if we never write to disk unless explicitely told, but will we writeback
> when we munmap?

Don't know for sure - you'd have to read the code (do_munmap) ... I couldn't
see anything there at a quick glance. However, I'd guess we don't write it, 
as multiple people could have the file mapped, or we could remap it
again from somewhere. Presumably the standard LRU will just flush it out.

M.