Emmanuel Dreyfus <[email protected]> wrote: > Please consider the test case below, ran on a PUFFS/perfuse/glusterfs > mount. A look at the PUFFS operation trace shows that the kernel sends > ADVLOCK for f0, f1 and m when a lock is requested on m.
Here is where the extra ADVLOCK happen: sys_exit -> exit1 -> fd_free -> fd_close -> VOP_ADVLOCK In a nutshell, NetBSD clears locks on all file descriptor when a process exit, that include read-only descriptors, and FUSE filesystems seem to be unconfortable with that. I am not sure of where this should be fixed: should we avoid unlocking read-only files in fd_close()? That seems a good idea performance-wise. Or is it a desirable behavior on native filesystems while being a bug for FUSE filesystems? In that case, it means I need to filter the operation in perfused. -- Emmanuel Dreyfus http://hcpnet.free.fr/pubz [email protected]
