Re: SMP read() stopping at memory page boundaries

From: Alan Cox
Date: Wed Jun 20 2007 - 12:59:33 EST


> I thought this wouldn't happen when reading from local filesystems.
> Anyway, my real program was doing that, and it was still seeing partial
> data. But looks like I can't reproduce it in my test program with two
> pread()s, so I'll have to do some more debugging.

It will occur if you are reading as someone else changes the file size.
Use file locking, it exists for a reason ;)

Alan
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