> They don't. All try_to_free_page() calls are made with
> WAIT=0. [...]
? maybe i'm just misreading the source:
[mingo@hal linux]$ grep __GFP_WAIT *.h
mm.h:#define __GFP_WAIT 0x01
mm.h:#define GFP_BUFFER (__GFP_LOW | __GFP_WAIT)
mm.h:#define GFP_USER (__GFP_LOW | __GFP_WAIT | __GFP_IO)
mm.h:#define GFP_KERNEL (__GFP_LOW | __GFP_WAIT | __GFP_IO)
mm.h:#define GFP_NFS (__GFP_MED | __GFP_WAIT | __GFP_IO)
in all these cases we wait definitely for the first swapout(s) to finish
...
-- mingo
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