Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Tue, 22 Feb 2000 16:28:06 +0000 (GMT) | Subject | Re: lowlatency-2.2.14-B1 + 2.2.14aa7 fixes crash, but... |
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Hi,
On Tue, 22 Feb 2000 16:21:40 +0100 (CET), Andrea Arcangeli <andrea@suse.de> said:
>> On the contrary --- in 2.2, brelse has always been able to block. It >> performs an implicit refile_buffer(), which can block for write >> throttling.
> refile_buffer blocks only if the buffer is been marked dirty and it wasn't > in the dirty lru list.
> How can a dirty buffer not be in the dirty lru list at brelse time?
OK, that looks like a good reason.
> I assumed the refile buffer there was for cleanup and not for write > throttling (that's the only case that can block).
Yes, it's definitely needed at least to remove buffers from the locked and/or dirty lists if IO has completed by that point.
--Stephen
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