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NFS: Ensure the client submounts, when it crosses a server mountpoint.

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2006-06-09 09:34:19 -04:00
parent 8b4bdcf899
commit 55a975937d
7 changed files with 418 additions and 5 deletions
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16
fs/nfs/dir.c
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@@ -868,6 +868,17 @@ int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
return (nd->intent.open.flags & O_EXCL) != 0;
}
static inline int nfs_reval_fsid(struct inode *dir,
struct nfs_fh *fh, struct nfs_fattr *fattr)
{
struct nfs_server *server = NFS_SERVER(dir);
if (!nfs_fsid_equal(&server->fsid, &fattr->fsid))
/* Revalidate fsid on root dir */
return __nfs_revalidate_inode(server, dir->i_sb->s_root->d_inode);
return 0;
}
static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
{
struct dentry *res;
@@ -900,6 +911,11 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
res = ERR_PTR(error);
goto out_unlock;
}
error = nfs_reval_fsid(dir, &fhandle, &fattr);
if (error < 0) {
res = ERR_PTR(error);
goto out_unlock;
}
inode = nfs_fhget(dentry->d_sb, &fhandle, &fattr);
res = (struct dentry *)inode;
if (IS_ERR(res))