Re: Do I have to do anything to make sure ext4lazyinit works as being advertised ?
at bottom :-
On 01/02/2017, Lennart Sorensen <firstname.lastname@example.org> wrote:
> On Wed, Feb 01, 2017 at 02:27:39PM +0530, shirish शिरीष wrote:
>>> My patch was fix for bug which was spotted on large disk arrays,
>>> 36 in my case. So itable initialization was active all the time
>>> while holding global lock.
>> From this, it seems there aren't any limits except for 10% of whatever
>> the link between
> Why would a large array make a difference to the algorithm if it aims
> to use 1/10 of the bandwidth?
I dunno (not an expert in large disk arrays) . For this you would have
to look at
https://patchwork.kernel.org/patch/9285509/ titled -
"Patchwork ext4/023: add regression test for ext4lazyinit_task deadlock V2"
>From the title it seems some sort of deadlock was occurring. For what
reason can probably be garnered by reading the code or/and talking
Dmitry Monakhov <email@example.com> who wrote that patch.
FWIW he wrote couple of patches this month as well -
> Len Sorensen
Shirish Agarwal शिरीष अग्रवाल
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