Well, I don't quite understand, but typically, I don't give shit to anything other than toilet. Before join GPFS, I had some experience with other distributed filesystems. I believe NFSv4 (with callback support), CIFS and other distributed filesystems have the ability to support leasing, but look at current cifs code (cifs_setlease() in fs/cifs/cifsfs.c). To avoid sleeping, it actually only works if everything is cached (with oplock acquired). I don't think this really helps because the application will be so easy to get -EAGAIN to do anything. So I think, generally, to make distributed filesystem provide a real working leasing mechanism, we might still need to think about changing this lock. On Fri, Aug 16, 2013 at 8:17 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > On Fri, Aug 16, 2013 at 12:41:14AM +0800, Feng Shuo wrote: >> much easier. Especially, if there >> Copy to Jeff and Arnd who were working on that lock. Also Miklos, yes, >> it's still me, the one was >> worked on fuse adaptive readdir_plus....now I'm working for GPFS.... > > People will start giving a shit once your filesystem in the Linux source > tree. People that violate our license are generally not overly liked. > -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
