On Tue, Oct 05, 2010 at 03:52:08PM +0530, Aneesh Kumar K.V wrote: > 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. Looks OK to me. I haven't read the later patches carefully, but in general an interface like this seems to me a useful thing to have. --b. > 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
