Ingo Molnar <mingo@xxxxxxxxxx> writes: >> [...] support for atomicity (to avoid journaling in PM space), etc. > > This too should work fine, by way of the SMP coherency protocol, if > atomic instructions are used on the relevant metadata. This isn't true. Visibility and durability are two very different things. That's what pcommit is all about. Search for it in this document, if you aren't already familiar with it: https://software.intel.com/en-us/intel-architecture-instruction-set-extensions-programming-reference However, in the context of your page structures that are re-initialized every boot, durability doesn't matter. So maybe that's what you were saying? Cheers, Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
