Messages in this thread | | | Subject | Re: [PATCH 1/1] suspend: delete sys_sync() | From | Oliver Neukum <> | Date | Thu, 09 Jul 2015 09:32:51 +0200 |
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On Thu, 2015-07-09 at 00:03 +0200, Rafael J. Wysocki wrote:
> Nothing and I'm not discussing that (I've said that already at least once in > this thread). > > What I'm questioning is the "why" of calling sys_sync() from the kernel.
That's strictly speaking two questions
1. Why do it in the kernel
That is easy. It closes the window of a race condition.
2. Why do it at all
In essence because the system becomes inactive. For example we say that data hits the disk after 30s maximum. We cannot meet such a limit unless we sync. There are additional issues, such as a system appearing inactive during suspension and frankly the far greater likelihood of a crash.
Regards Oliver
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