On Mon, Apr 09, 2018 at 09:52:03AM -0700, Matthew Wilcox wrote:
> On Mon, Apr 09, 2018 at 05:39:16PM +0200, Christoph Hellwig wrote:
> > blk_get_request is used for pass-through style I/O and thus doesn't need
> Obviously GFP_KERNEL is a big improvement over GFP_NOIO!  But can we take
> it all the way to GFP_USER, if this is always done in the ioctl path
> (which it seems to be, except for nfsd, which presumably won't have
> a cpuset memory allocation policy ... and if it did, the admin might
> appreciate it honouring said policy).

GFP_USER claims to be for allocations mapped into userspace, and except
for a few outliers that is how we use it.  I see no reason to change
that here.

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