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Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic

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On 06/26/2017 02:14 PM, Michal Hocko wrote:
> On Mon 26-06-17 13:45:19, Vlastimil Babka wrote:
>> On 06/23/2017 10:53 AM, Michal Hocko wrote:
> [...]
>>> - GFP_KERNEL - both background and direct reclaim are allowed and the
>>>   _default_ page allocator behavior is used. That means that !costly
>>>   allocation requests are basically nofail (unless the requesting task
>>>   is killed by the OOM killer)
>>
>> Should we explicitly point out that failure must be handled? After lots
>> of talking about "too small to fail", people might get the wrong impression.
> 
> OK. What about the following.
> "That means that !costly allocation requests are basically nofail but
> there is no guarantee of thaat behavior so failures have to be checked

                           that

> properly by callers (e.g. OOM killer victim is allowed to fail
> currently).

Looks good, thanks!

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[PATCH 0/6] mm: give __GFP_REPEAT a better semantic Michal Hocko <mhocko@kernel.org> - 2017-06-23 11:00 +0200
  [PATCH 1/6] MIPS: do not use __GFP_REPEAT for order-0 request Michal Hocko <mhocko@kernel.org> - 2017-06-23 11:00 +0200
    Re: [PATCH 1/6] MIPS: do not use __GFP_REPEAT for order-0 request Ralf Baechle <ralf@linux-mips.org> - 2017-06-23 12:30 +0200
    Re: [PATCH 1/6] MIPS: do not use __GFP_REPEAT for order-0 request Vlastimil Babka <vbabka@suse.cz> - 2017-06-26 11:40 +0200
  [PATCH 5/6] drm/i915: use __GFP_RETRY_MAYFAIL Michal Hocko <mhocko@kernel.org> - 2017-06-23 11:00 +0200
  [PATCH 6/6] mm, migration: do not trigger OOM killer when migrating memory Michal Hocko <mhocko@kernel.org> - 2017-06-23 11:00 +0200
    Re: [PATCH 6/6] mm, migration: do not trigger OOM killer when  migrating memory Andrew Morton <akpm@linux-foundation.org> - 2017-06-23 22:50 +0200
      Re: [PATCH 6/6] mm, migration: do not trigger OOM killer when  migrating memory Michal Hocko <mhocko@kernel.org> - 2017-06-26 07:30 +0200
    Re: [PATCH 6/6] mm, migration: do not trigger OOM killer when  migrating memory Vlastimil Babka <vbabka@suse.cz> - 2017-06-26 14:20 +0200
  [PATCH 4/6] mm: kvmalloc support __GFP_RETRY_MAYFAIL for all sizes Michal Hocko <mhocko@kernel.org> - 2017-06-23 11:00 +0200
    Re: [PATCH 4/6] mm: kvmalloc support __GFP_RETRY_MAYFAIL for all  sizes Vlastimil Babka <vbabka@suse.cz> - 2017-06-26 14:10 +0200
      Re: [PATCH 4/6] mm: kvmalloc support __GFP_RETRY_MAYFAIL for all  sizes Michal Hocko <mhocko@kernel.org> - 2017-06-26 14:20 +0200
  [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic Michal Hocko <mhocko@kernel.org> - 2017-06-23 11:00 +0200
    Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by  __GFP_RETRY_MAYFAIL with more useful semantic Vlastimil Babka <vbabka@suse.cz> - 2017-06-26 13:50 +0200
      Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by  __GFP_RETRY_MAYFAIL with more useful semantic Vlastimil Babka <vbabka@suse.cz> - 2017-06-26 14:20 +0200
        Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by  __GFP_RETRY_MAYFAIL with more useful semantic Michal Hocko <mhocko@kernel.org> - 2017-06-26 14:40 +0200
          Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by  __GFP_RETRY_MAYFAIL with more useful semantic Michal Hocko <mhocko@kernel.org> - 2017-06-26 14:50 +0200
      Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by  __GFP_RETRY_MAYFAIL with more useful semantic Michal Hocko <mhocko@kernel.org> - 2017-06-26 14:20 +0200
    Re: [PATCH 2/6] mm, tree wide: replace __GFP_REPEAT by  __GFP_RETRY_MAYFAIL with more useful semantic Vlastimil Babka <vbabka@suse.cz> - 2017-06-26 14:00 +0200

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