On Mon, Jun 10, 2024 at 04:13:23PM +0200, Cyril Hrubis wrote: > Do we need noinline attribute for the function as well or unlikely() in > the if condition? unlikely sounds like the right thing here. > > (and maybe one day we figure out a way for the file system to > > advertise what fallocate modes it actually supports..) > > One of my ideas was to try fallocate() with zero size in the > loop_reconfigure_limits() to see if we get EOPNOTSUPP but for that to > work we would have to make sure that we do not bail early on zero size > in the vfs layer... And the VFS layer doesn't know, it has to go all the way into the file system..
