On Wed, Mar 30, 2016 at 8:47 PM, Tejun Heo <t...@kernel.org> wrote: > Hello, > > On Mon, Mar 28, 2016 at 09:45:53PM +0200, Miklos Szeredi wrote: >> >> commit 947e9762a8ddefda38aa21e249e6a4fec215cd12 >> >> Author: Tejun Heo <t...@kernel.org> >> >> Date: Fri May 22 18:23:32 2015 -0400 >> >> >> >> writeback: update wb_over_bg_thresh() to use wb_domain aware >> >> operations >> > >> >> Tejun, >> >> Any idea why this commit stalls fuse mmap writes? >> >> Here's the start of the this thread: >> >> http://marc.info/?l=fuse-devel&m=145008058603261&w=2 > > Hmmm... cgroup writeback support shouldn't affect fuse at all as the > backing device doesn't enable cgroup support. I probably made some > silly mistake. Is there a simple reproducer I can play with? > > Thanks. >
To quote Jakob from a previous email: "I you want to reproduce, clone https://github.com/rfjakob/mmapwrite.git and run ./encfs-test.sh (needs encfs installed). On the bad kernel, it will hang within a few seconds." Hope this helps. - Sedat -
