Hi, The below set of patches implement open by handle support using exportfs operations. This allows user space application to map a file name to file handle and later open the file using handle. This should be usable for userspace NFS [1] and 9P server [2]. XFS already support this with the ioctls XFS_IOC_PATH_TO_HANDLE and XFS_IOC_OPEN_BY_HANDLE. [1] http://nfs-ganesha.sourceforge.net/ [2] http://thread.gmane.org/gmane.comp.emulators.qemu/68992 git repo for the patchset at: git://git.kernel.org/pub/scm/linux/kernel/git/kvaneesh/linux-open-handle.git open-by-handle Test case can be found at http://git.kernel.org/?p=fs/ext2/kvaneesh/handle-test.git git://git.kernel.org/pub/scm/fs/ext2/kvaneesh/handle-test.git Changes from V20: a) Use better variable names b) change handle_size type to __u32 c) max handle size is now nfsv4 handle size. Considering file system would want to support a handle that can fit into nfsv4 handle size limiting max handle size to 128 rather than 4096 is the right thing. d) I didn't add Ceph changes in the series. I am expecting the changes will go via Ceph tree. -aneesh -- 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
