Re: SMP read() stopping at memory page boundaries

Alan Cox
2007-06-20T16:59:33Z

> 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