Messages in this thread |  | | From | Oliver Neukum <> | Subject | Re: PF_MEMALLOC in 2.6 | Date | Fri, 20 Aug 2004 09:56:50 +0200 |
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Am Freitag, 20. August 2004 04:37 schrieb Nick Piggin: > So if this thing allocates memory on behalf of a read request, then > it is basically a bug. In practice you could probably get away with > servicing all writes with PF_MEMALLOC, however that could still lead > to situations where it consumes all your low memory on behalf of > highmem IO (though perhaps this won't deadlock if that memory is > going to be released as a matter of course?) > > Another thing, having it always use PF_MEMALLOC means it can easily > wipe out the GFP_ATOMIC reserve. > > So I'd say try to find a way to only use PF_MEMALLOC on behalf of > a PF_MEMALLOC thread or use a mempool or something.
Then the SCSI layer should pass down the flag.
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