On Wed 27-04-16 19:53:21, Tetsuo Handa wrote:
[...]
> > Let's hope that filesystems will drop direct GFP_NOFS (resp. ~__GFP_FS)
> > usage as much and possible and only use a properly documented
> > memalloc_nofs_{save,restore} checkpoints where they are appropriate.
>
> Is the story simple enough to monotonically replace GFP_NOFS/GFP_NOIO
> with GFP_KERNEL after memalloc_no{fs,io}_{save,restore} are inserted?
> We sometimes delegate some operations to somebody else. Don't we need to
> convey PF_MEMALLOC_NOFS/PF_MEMALLOC_NOIO flags to APIs which interact with
> other threads?
We can add an api to do that if that is really needed.
--
Michal Hocko
SUSE Labs
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