On Mon, Aug 09, 2021 at 09:23:00AM -0700, Linus Torvalds wrote: > On Mon, Aug 9, 2021 at 2:52 AM <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > The patch below does not apply to the 4.4-stable tree. > > It shouldn't. > > The pipe buffer accounting and soft limits that introduced the whole > "limp along with limited pipe buffers" behavior that this fixes was > introduced by > > > Fixes: 759c01142a ("pipe: limit the per-user amount of pages allocated in pipes") > > ..which made it into 4.5. > > So 4.4 is unaffected and doesn't want this patch. But that commit showed up in 4.4.13 as fa6d0ba12a8e ("pipe: limit the per-user amount of pages allocated in pipes") which is why I asked about this. The code didn't look similar at all, so I couldn't easily figure out the backport myself :( Willy, any ideas? thanks, greg k-h