Re: [PATCH] mm: page_alloc: document kmemleak's non-blockable __GFP_NOFAIL case

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On Sat, Jul 13, 2019 at 04:49:04AM +0800, Yang Shi wrote:
> When running ltp's oom test with kmemleak enabled, the below warning was
> triggerred since kernel detects __GFP_NOFAIL & ~__GFP_DIRECT_RECLAIM is
> passed in:

There are lots of places where kmemleak will call kmalloc with
__GFP_NOFAIL and ~__GFP_DIRECT_RECLAIM (including the XArray code, which
is how I know about it).  It needs to be fixed to allow its internal
allocations to fail and return failure of the original allocation as
a consequence.




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