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Subject: Re: =?UTF-8?Q?=E7=AD=94=E5=A4=8D=3A?= UBIFS: Failed to read/write
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From: Artem Bityutskiy <dedekind1@gmail.com>
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On Tue, 2017-03-21 at 01:53 +0000, 余华兵(平台一部 福州) wrote:
> Or does this only happen when the kernel tries to produce free memory
> in the writeback path?
> //This happens when UBIFS reads or writes a file. UBIFS should avoid
> applying for continuous pages, otherwise it will fail when the
> continuous pages are not enough.

You are right that it will be better if UBIFS allocates single pages
only. But this is an improvement request. It is not a bug to do order 1
allocations, it is just an imperfection: UBIFS could work better on
system with highly fragmented memory.

Artem.