Hi, On Wed, Jul 15, 2020 at 01:32:02PM -0700, Josh Triplett wrote: > On Thu, Jul 16, 2020 at 02:06:18AM +0800, kernel test robot wrote: > > commit: 22dd199a7221932b194badb999181ca3fa2e62e2 (mm: introduce secretmemfd system call to create "secret" memory areas) > Unrelated to the size, I'm wondering: why have this as a separate > syscall, rather than just a flag to memfd_create? Kirill asked the same question but the other way around: https://lore.kernel.org/linux-mm/20200713105812.dnwtdhsuyj3xbh4f@box/ I feel we are going to bikesched about it for a while :) More seruously, the commonality with memfd_create end at the fact that this a file descriptor for memory. Having this as separate syscall will be less confusing to the users, and I beleive, more flexible for future changes.