On Sun, Oct 09, 2016 at 12:06:14PM +0200, Dmitry Vyukov wrote: > I suspect this is: > > commit 25869262ef7af24ccde988867ac3eb1c3d4b88d4 > Author: Al Viro <v...@zeniv.linux.org.uk> > Date: Sat Sep 17 21:02:10 2016 -0400 > skb_splice_bits(): get rid of callback > since pipe_lock is the outermost now, we don't need to drop/regain > socket locks around the call of splice_to_pipe() from skb_splice_bits(), > which kills the need to have a socket-specific callback; we can just > call splice_to_pipe() and be done with that.
Unlikely, since that particular commit removes unlocking/relocking ->iolock around the call of splice_to_pipe(). Original would've retaken the same lock on the way out; it's not as if we could leave the syscall there. It might be splice-related, but I don't believe that you've got the right commit here.
