On Sun, Nov 24, 2024 at 04:53:39PM -0800, Linus Torvalds wrote: > On Sun, 24 Nov 2024 at 15:53, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > Look, let's write 5.000950, 6.000150 and 7.000950, while there is a > single reader (and let's assume these are all properly ordered reads > and writes): > > W1.s 5 > W1.ns 950 > W2.s 6 > R.ns (950) > R.s (6) > W2.ns 150 > W3.s 7 > W3.ns 950 > R.ns (950) > > and look how the reader is happy, because it got the same nanoseconds > twice. But the reader thinks it had a time of 6.000950, and AT NO > POINT was that actually a valid time. I literally said that. "Now we have a time of 6:950 which is never a time that this file had, but it's intermediate in time between two times that the file _did_ have, so it won't break make."
