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SubjectRe: PF_MEMALLOC in 2.6
Am Donnerstag, 19. August 2004 14:41 schrieb Hugh Dickins:
> Fine for it to dip into those reserves when acting on behalf of something
> already PF_MEMALLOC (i.e. try_to_free_pages itself), but not fine for it
> to do so as a matter of course e.g. worst case, doing readahead could
> easily exhaust reserves.  Or, is this thread only used for writing?
> that wouldn't be so bad if so.

All IO going to the actual disk uses the thread. However we usually
don't want to fail IO request due to low memory.

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