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nfsd4: nfsv4 clients should cross mountpoints 

Allow NFS v4 clients to seamlessly cross mount point without
have to set either the 'crossmnt' or the 'nohide' export
options.

Signed-Off-By: Steve Dickson <steved@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Steve Dickson 2009-09-09 15:02:40 -04:00 committed by J. Bruce Fields
parent 285a0f00c2
commit 3c394ddaa7
1 changed files with 8 additions and 1 deletions
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9
fs/nfsd/vfs.c
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@ -89,6 +89,12 @@ struct raparm_hbucket {
#define RAPARM_HASH_MASK (RAPARM_HASH_SIZE-1)
static struct raparm_hbucket raparm_hash[RAPARM_HASH_SIZE];
static inline int
nfsd_v4client(struct svc_rqst *rq)
{
return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
}
/*
* Called from nfsd_lookup and encode_dirent. Check if we have crossed
* a mount point.
@ -115,7 +121,8 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
path_put(&path);
goto out;
}
if ((exp->ex_flags & NFSEXP_CROSSMOUNT) || EX_NOHIDE(exp2)) {
if (nfsd_v4client(rqstp) ||
(exp->ex_flags & NFSEXP_CROSSMOUNT) || EX_NOHIDE(exp2)) {
/* successfully crossed mount point */
/*
* This is subtle: path.dentry is *not* on path.mnt