11 ms·
Is this guaranteed to be atomic on all filesystems?
by acuozzo 9mo ago
Is this guaranteed to be atomic on all filesystems?
- chasil 9mo agoFor POSIX, yes. https://rcrowley.org/2010/01/06/things-unix-can-do-atomically.html https://rcrowley.org/2010/01/06/things-unix-can-do-atomicall... Windows has a deep well of POSIX in the kernel (plus hard file locks), and it appears to hold there. https://en.wikipedia.org/wiki/Microsoft_POSIX_subsystem https://en.wikipedia.org/wiki/Microsoft_POSIX_subsystem
- elteto 9mo agoIt’s even atomic on NFS. In fact, it’s probably the only reliable locking mechanism on NFS.