On Wed, 29 Jan 2025 at 19:17, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> wrote: > > > From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > > Prefaulting the write source buffer incurs an extra userspace access > in the common fast path. Make fuse_fill_write_pages() consistent with > generic_perform_write(): only touch userspace an extra time when > copy_folio_from_iter_atomic() has failed to make progress. > > Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > Cc: Miklos Szeredi <miklos@xxxxxxxxxx> Applied, thanks. Miklos
