moved the FileSystemName definition back down to the kernel, so the daemon is no longer responsible for setting it. the driver uses the string length to calculate the buffer size needed for NFS41_V_NET_ROOT_EXTENSION.FsAttrs, and copies in the FileSystemName after the first successful volume attributes upcall
Signed-off-by: Casey Bodley <cbodley@umich.edu>
added FILE_FS_ATTRIBUTE_INFORMATION and FileSystemAttributes flags to from_kernel.h
queries case_preserving, case_insensitive attributes to fill in FileSystemAttributes, and uses #defines from nfs41_const.h for MaximumComponentNameLength and FileSystemName
Signed-off-by: Casey Bodley <cbodley@umich.edu>