Hi All, I have found an issue with lazy/forced unmounts with nfsd. Let us say /nfs is a mount point, and we are exporting /nfs/exp directory. After mounting from a client, this export will have a cache entry "svc_export" in the kernel. The exports pathname d_path(svc_export->ex_path) correctly resolves to "/nfs/exp" After the /nfs is lazy unmounted, the d_path(svc_export->ex_path) resolves to "/exp" only. Now, if the cache entry needs revalidation, you will see "/exp" in the nfsd.export/channel file that never gets cleared as that cache entry will be in a forever CACHE_PENDING state. We will also see svc_export_parse() failing with -2 err as such a pathname doesn't exist in the system any more. I noticed that svc_export has two fields: ex_path and ex_pathname. Is it possible to make a string comparison of d_path(ex_path) and ex_pathname? If so, we should be able to fail the upcall without making the upcall if those two don't match. Regards, Malahal. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
