On Wed, Aug 21, 2013 at 11:35 PM, Sage Weil <[email protected]> wrote: > On Wed, 21 Aug 2013, Sha Zhengju wrote: >> Following we will begin to add memcg dirty page accounting around >> __set_page_dirty_{buffers,nobuffers} in vfs layer, so we'd better use vfs >> interface to >> avoid exporting those details to filesystems. >> >> Since vfs set_page_dirty() should be called under page lock, here we don't >> need elaborate >> codes to handle racy anymore, and two WARN_ON() are added to detect such >> exceptions. >> Thanks very much for Sage and Yan Zheng's coaching! >> >> I tested it in a two server's ceph environment that one is client and the >> other is >> mds/osd/mon, and run the following fsx test from xfstests: >> >> ./fsx 1MB -N 50000 -p 10000 -l 1048576 >> ./fsx 10MB -N 50000 -p 10000 -l 10485760 >> ./fsx 100MB -N 50000 -p 10000 -l 104857600 >> >> The fsx does lots of mmap-read/mmap-write/truncate operations and the tests >> completed >> successfully without triggering any of WARN_ON. >> >> Signed-off-by: Sha Zhengju <[email protected]> > > Reviewed-by: Sage Weil <[email protected]> > > Would you like me to take this through the ceph tree? >
Yes, of course. : ) BTW I lost my from: From: Sha Zhengju <[email protected]> Thank you! -- Thanks, Sha -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
