On Tue, 7 Jun 2022 20:22:34 +0530 Charan Teja Kalla <quic_charante@xxxxxxxxxxx> wrote: > > Is there an actual userspace/driver combination which will use this? > > Has the new feature been tested in such an arrangement? And if so, > > which driver(s)? > > > > Currently my organization is using this setup where it does makes use of > the shmem infrastructure to allocate the pages and its fd is passed to > the user. The user is now deciding on when to reclaim these pages to > free up the memory through already presented vfs_fadvise(DONTNEED) > system call and bringing back them through vfs_fadvise(WILLNEED), when OK, thanks. Please capture all these thoughts in the [0/n] changelog, leave it a few days for reviewer input then resend and I'll take a closer look. The patches don't seem to be getting a lot of traction.