My recent series (that may not now be needed) to allow fh_verify() to not be given an rqstp pointer (instead taking the individual fields that it actually needs) exposed several opportunities for improving code cleanliness. This series provides just those. I'm not convinced that the last 2 are a genuine improvement, but that follow a pattern set by earlier patches, and maybe they are a good idea. There is some minor behavioural change in that some error codes are changed as described in patch 3. Thanks, NeilBrown [PATCH 1/6] nfsd: Don't pass all of rqst into rqst_exp_find() [PATCH 2/6] nfsd: Pass 'cred' instead of 'rqstp' to some functions. [PATCH 3/6] nfsd: Move error code mapping to per-version xdr code. [PATCH 4/6] nfsd: use nfsd_v4client() in nfsd_breaker_owns_lease() [PATCH 5/6] nfsd: further centralize protocol version checks. [PATCH 6/6] nfsd: move V4ROOT version check to nfsd_set_fh_dentry()
