Hi everybody, i've been googling for ages now and gotten kinda desperate... The question, however, might be rather trivial for the experts: What is it exactly, i.e. physically, the POSIX function (for a file) "lseek" does? Does it trigger some kind of synchronization on disk? Is it just for the file system? Rationale: I'm am running some benchmarks to get an idea, how our system (ext4@Debian5) wor
![Lseek implementation](https://cdn-ak-scissors.b.st-hatena.com/image/square/d03b554f1fa615dcb4339cf6c1c3c7e20d457552/height=288;version=1;width=512/https%3A%2F%2Fwww.unix.com%2Fimages%2Fog-image.jpg)