On Thu, Apr 02, 2009 at 09:18:50AM +1100, Bron Gondwana wrote: > On Wed, Apr 01, 2009 at 06:51:36PM +0200, Frederic Weisbecker wrote: > > > I'll let Frederic describe it but AFAIK the patch is working fine > > > with the BKL as a mutex and no lockdep complaints or lockups. The > > > main focus is now on finding the performance affecting spots, > > > because Frederic's main desktop is on reiserfs and he does not > > > accept a slowdown :) > > > > Hehe :-) > > No actually I would accept a tiny slowdown but I fear that the common > > reiserfs users wouldn't. > > We run big(ish) imap servers with up to 80 reiserfs partitions > spread over a bunch of SCSI or SAS attached external drive units. > I'm actually surprised that the BKL isn't causing us much pain > (load is amazingly low considering how many users are on these > boxes - at least now that we have 32Gb RAM and 64 bit kernels). > > Are you still using an "entire reiserfs subsystem" mutex, or > per-filesystem locking? If it's per filesystem, then I suspect > we'll be big fans! Yeah. It is per superblock :-) Frederic. > > > I'm still working on this and once it's ready enough for an RFC patch, > > I'll explain how is done the conversion to a mutex. > > > > Stay tuned. > > Sure will! > > Thanks, > > Bron. -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
