GFP_XXX semantics (was: Re: [PATCH] 2.2.1{3,4,5} VM fix)
Ingo Oeser
ingo.oeser en informatik.tu-chemnitz.de
Lun Ene 24 13:42:40 CST 2000
On Sat, 22 Jan 2000, Andrea Arcangeli wrote:
[GFP-Mask semantics discussion]
ok, once we are about it here, could you please explain the
_exact_ semantics for the GFP_XXX constants?
GFP_BUFFER
GFP_ATOMIC
GFP_BIGUSER
GFP_USER
GFP_KERNEL
GFP_NFS
GFP_KSWAPD
So which steps are tried to allocate these pages (freeing
process, freeing globally, waiting, failing, kswapd-wakeup)?
Because it is not easy to decide from a driver writers point of
view, which one to use for which requests :(
Thanks and Regards
Ingo Oeser
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