Messages in this thread | | | Date | Wed, 16 Apr 2008 14:50:34 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH] Replace completions with semaphores |
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> btw., has anyone thought about killable sync/fsync syscalls - would that > surprise too many programs?
killable stat and readdir would be even more important I would say.
When sync/fsync takes too long it's typically just a kernel bug of some sort (like that long running MM starvation issue that stalls writes on some kinds of background activity) that should be really just fixed.
But handling down network servers which hit stat/readdir etc. is a real situation not explained by a bug.
For example a standard situation that hits me regularly is that I save something in firefox on a different server and then later turn that machine off. Then next time I try to save something in firefox it first blocks forever in stat()ing that down directory.
-Andi
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