Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > I'm not even convinced O_NOTIFICATION_PIPE is necessary, but at worst > it will be a useful marker. I think the only real reason for it was to > avoid any clashes with splice(), which has more complex use of the > pipe buffers. The main reason is to prevent splice because the iov_iter rewind for splice gets quite tricky if the kernel can randomly insert packets into the pipe buffer in between what splice is inserting. > I'm so far just reading this thread and the arguments for users, and I > haven't yet looked at all the actual details in the pull request - but > last time I had objections to things it wasn't the code, it was the > lack of any use. Would you be willing at this point to consider pulling the mount notifications and fsinfo() which helps support that? I could whip up pull reqs for those two pieces - or do you want to see more concrete patches that use it? David
