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NFSv4: Follow a referral

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Respond to a moved error on NFS lookup by setting up the referral.
Note: We don't actually follow the referral during lookup/getattr, but
later when we detect fsid mismatch in inode revalidation (similar to the
processing done for cloning submounts). Referrals will have fake attributes
until they are actually followed or traversed.

Signed-off-by: Manoj Naik <manoj@almaden.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Manoj Naik
2006-06-09 09:34:29 -04:00
committed by Trond Myklebust
parent 9cdb3883c3
commit 6b97fd3da1
5 changed files with 60 additions and 2 deletions
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5
fs/nfs/inode.c
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@@ -888,7 +888,10 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
/* Deal with crossing mountpoints */
if (!nfs_fsid_equal(&NFS_SB(sb)->fsid, &fattr->fsid)) {
inode->i_op = &nfs_mountpoint_inode_operations;
if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
inode->i_op = &nfs_referral_inode_operations;
else
inode->i_op = &nfs_mountpoint_inode_operations;
inode->i_fop = NULL;
}
} else if (S_ISLNK(inode->i_mode))