Messages in this thread |  | | Date | Thu, 5 Apr 2018 10:30:50 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH v1] kernel/trace:check the val against the available mem |
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On Thu, 5 Apr 2018 07:22:58 -0700 Matthew Wilcox <willy@infradead.org> wrote:
> I understand you don't want GFP_NORETRY. But why is it more important for > this allocation to succeed than other normal GFP_KERNEL allocations?
Not sure what you mean by "more important"? Does saying "RETRY_MAYFAIL" make it more important? The difference is, if GFP_KERNEL fails, we don't want to trigger an OOM, and simply clean up and report -ENOMEM to the user. It has nothing to do with being more important than other allocations.
If there's 100 Megs of memory available, and the user requests a gig of memory, it's going to fail. Ideally, it doesn't trigger OOM, but instead simply reports -ENOMEM to the user.
-- Steve
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