On Mon, Jul 14, 2025 at 09:24:07AM -0400, Theodore Ts'o wrote: > > Is is just me, or would it be a good idea to require an explicit > > opt-in to user hardware atomics? > > How common do we think broken atomics implementations; is this > something that we could solve using a blacklist of broken devices? I don't know. But cheap consumer SSDs can basically exhibit any brokenness you can imagine. And claiming to support atomics basically just means filling out a single field in identify with a non-zero value. So my hopes of only seeing it in a few devices is low, moreover we will only notice it was broken when people lost data.
