On Sep 19, 2016, at 09:28, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Sun, Sep 18, 2016 at 04:37:29PM -0400, James Simmons wrote: >> + * Range lock is used to allow multiple threads writing a single shared >> + * file given each thread is writing to a non-overlapping portion of the >> + * file. >> + * >> + * Refer to the possible upstream kernel version of range lock by >> + * Jan Kara <jack@xxxxxxx>: https://lkml.org/lkml/2013/1/31/480 >> + * >> + * This file could later replaced by the upstream kernel version. > > It doesn't look like range_lock ever got accepted in the kernel tree, > any idea what happened to it? Having a per-filesystem lock type seems > odd to me... I've added Jan and linux-fsdevel to the CC list to see what interest there is in the range locking implementaion. At the time we added this to Lustre it appeared that this was moving nicely torward landing, but it seems to have stalled. I think the range locking implementation is fairly generic, and if there are other users in the kernel it could easily be pulled out of the staging dir into vfs/. I'm not against it going into vfs/ directly either, but not sure whether that is acceptable if the only user is in staging. Cheers, Andreas-- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
