Use struct path in struct svc_export

I'm embedding struct path into struct svc_export.

[akpm@linux-foundation.org: coding-style fixes]
[ezk@cs.sunysb.edu: NFSD: fix wrong mnt_writer count in rename]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Acked-by: J. Bruce Fields <bfields@citi.umich.edu>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 32 insertions, 35 deletions

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 717413f..7d78968 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -332,10 +332,9 @@ static void nfsd4_fslocs_free(struct nfsd4_fs_locations *fsloc)
 static void svc_export_put(struct kref *ref)
 {
 	struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
-	dput(exp->ex_dentry);
-	mntput(exp->ex_mnt);
+	path_put(&exp->ex_path);
 	auth_domain_put(exp->ex_client);
-	kfree(exp->ex_path);
+	kfree(exp->ex_pathname);
 	nfsd4_fslocs_free(&exp->ex_fslocs);
 	kfree(exp);
 }
@@ -349,7 +348,7 @@ static void svc_export_request(struct cache_detail *cd,
 	char *pth;
 
 	qword_add(bpp, blen, exp->ex_client->name);
-	pth = d_path(exp->ex_dentry, exp->ex_mnt, *bpp, *blen);
+	pth = d_path(exp->ex_path.dentry, exp->ex_path.mnt, *bpp, *blen);
 	if (IS_ERR(pth)) {
 		/* is this correct? */
 		(*bpp)[0] = '\n';
@@ -508,7 +507,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
 	int an_int;
 
 	nd.path.dentry = NULL;
-	exp.ex_path = NULL;
+	exp.ex_pathname = NULL;
 
 	/* fs locations */
 	exp.ex_fslocs.locations = NULL;
@@ -547,11 +546,11 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
 
 	exp.h.flags = 0;
 	exp.ex_client = dom;
-	exp.ex_mnt = nd.path.mnt;
-	exp.ex_dentry = nd.path.dentry;
-	exp.ex_path = kstrdup(buf, GFP_KERNEL);
+	exp.ex_path.mnt = nd.path.mnt;
+	exp.ex_path.dentry = nd.path.dentry;
+	exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
 	err = -ENOMEM;
-	if (!exp.ex_path)
+	if (!exp.ex_pathname)
 		goto out;
 
 	/* expiry */
@@ -628,7 +627,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
  out:
 	nfsd4_fslocs_free(&exp.ex_fslocs);
 	kfree(exp.ex_uuid);
- 	kfree(exp.ex_path);
+	kfree(exp.ex_pathname);
 	if (nd.path.dentry)
 		path_put(&nd.path);
  out_no_path:
@@ -653,7 +652,7 @@ static int svc_export_show(struct seq_file *m,
 		return 0;
 	}
 	exp = container_of(h, struct svc_export, h);
-	seq_path(m, exp->ex_mnt, exp->ex_dentry, " \t\n\\");
+	seq_path(m, exp->ex_path.mnt, exp->ex_path.dentry, " \t\n\\");
 	seq_putc(m, '\t');
 	seq_escape(m, exp->ex_client->name, " \t\n\\");
 	seq_putc(m, '(');
@@ -680,8 +679,8 @@ static int svc_export_match(struct cache_head *a, struct cache_head *b)
 	struct svc_export *orig = container_of(a, struct svc_export, h);
 	struct svc_export *new = container_of(b, struct svc_export, h);
 	return orig->ex_client == new->ex_client &&
-		orig->ex_dentry == new->ex_dentry &&
-		orig->ex_mnt == new->ex_mnt;
+		orig->ex_path.dentry == new->ex_path.dentry &&
+		orig->ex_path.mnt == new->ex_path.mnt;
 }
 
 static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
@@ -691,9 +690,9 @@ static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
 
 	kref_get(&item->ex_client->ref);
 	new->ex_client = item->ex_client;
-	new->ex_dentry = dget(item->ex_dentry);
-	new->ex_mnt = mntget(item->ex_mnt);
-	new->ex_path = NULL;
+	new->ex_path.dentry = dget(item->ex_path.dentry);
+	new->ex_path.mnt = mntget(item->ex_path.mnt);
+	new->ex_pathname = NULL;
 	new->ex_fslocs.locations = NULL;
 	new->ex_fslocs.locations_count = 0;
 	new->ex_fslocs.migrated = 0;
@@ -711,8 +710,8 @@ static void export_update(struct cache_head *cnew, struct cache_head *citem)
 	new->ex_fsid = item->ex_fsid;
 	new->ex_uuid = item->ex_uuid;
 	item->ex_uuid = NULL;
-	new->ex_path = item->ex_path;
-	item->ex_path = NULL;
+	new->ex_pathname = item->ex_pathname;
+	item->ex_pathname = NULL;
 	new->ex_fslocs.locations = item->ex_fslocs.locations;
 	item->ex_fslocs.locations = NULL;
 	new->ex_fslocs.locations_count = item->ex_fslocs.locations_count;
@@ -755,8 +754,8 @@ svc_export_lookup(struct svc_export *exp)
 	struct cache_head *ch;
 	int hash;
 	hash = hash_ptr(exp->ex_client, EXPORT_HASHBITS);
-	hash ^= hash_ptr(exp->ex_dentry, EXPORT_HASHBITS);
-	hash ^= hash_ptr(exp->ex_mnt, EXPORT_HASHBITS);
+	hash ^= hash_ptr(exp->ex_path.dentry, EXPORT_HASHBITS);
+	hash ^= hash_ptr(exp->ex_path.mnt, EXPORT_HASHBITS);
 
 	ch = sunrpc_cache_lookup(&svc_export_cache, &exp->h,
 				 hash);
@@ -772,8 +771,8 @@ svc_export_update(struct svc_export *new, struct svc_export *old)
 	struct cache_head *ch;
 	int hash;
 	hash = hash_ptr(old->ex_client, EXPORT_HASHBITS);
-	hash ^= hash_ptr(old->ex_dentry, EXPORT_HASHBITS);
-	hash ^= hash_ptr(old->ex_mnt, EXPORT_HASHBITS);
+	hash ^= hash_ptr(old->ex_path.dentry, EXPORT_HASHBITS);
+	hash ^= hash_ptr(old->ex_path.mnt, EXPORT_HASHBITS);
 
 	ch = sunrpc_cache_update(&svc_export_cache, &new->h,
 				 &old->h,
@@ -815,8 +814,8 @@ static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv,
 	key.ek_client = clp;
 	key.ek_fsidtype = fsid_type;
 	memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
-	key.ek_mnt = exp->ex_mnt;
-	key.ek_dentry = exp->ex_dentry;
+	key.ek_mnt = exp->ex_path.mnt;
+	key.ek_dentry = exp->ex_path.dentry;
 	key.h.expiry_time = NEVER;
 	key.h.flags = 0;
 
@@ -870,8 +869,8 @@ static svc_export *exp_get_by_name(svc_client *clp, struct vfsmount *mnt,
 		return ERR_PTR(-ENOENT);
 
 	key.ex_client = clp;
-	key.ex_mnt = mnt;
-	key.ex_dentry = dentry;
+	key.ex_path.mnt = mnt;
+	key.ex_path.dentry = dentry;
 
 	exp = svc_export_lookup(&key);
 	if (exp == NULL)
@@ -968,7 +967,7 @@ static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
 static int exp_hash(struct auth_domain *clp, struct svc_export *exp)
 {
 	u32 fsid[2];
-	struct inode *inode = exp->ex_dentry->d_inode;
+	struct inode *inode = exp->ex_path.dentry->d_inode;
 	dev_t dev = inode->i_sb->s_dev;
 
 	if (old_valid_dev(dev)) {
@@ -982,7 +981,7 @@ static int exp_hash(struct auth_domain *clp, struct svc_export *exp)
 static void exp_unhash(struct svc_export *exp)
 {
 	struct svc_expkey *ek;
-	struct inode *inode = exp->ex_dentry->d_inode;
+	struct inode *inode = exp->ex_path.dentry->d_inode;
 
 	ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
 	if (!IS_ERR(ek)) {
@@ -1064,12 +1063,11 @@ exp_export(struct nfsctl_export *nxp)
 
 	new.h.expiry_time = NEVER;
 	new.h.flags = 0;
-	new.ex_path = kstrdup(nxp->ex_path, GFP_KERNEL);
-	if (!new.ex_path)
+	new.ex_pathname = kstrdup(nxp->ex_path, GFP_KERNEL);
+	if (!new.ex_pathname)
 		goto finish;
 	new.ex_client = clp;
-	new.ex_mnt = nd.path.mnt;
-	new.ex_dentry = nd.path.dentry;
+	new.ex_path = nd.path;
 	new.ex_flags = nxp->ex_flags;
 	new.ex_anon_uid = nxp->ex_anon_uid;
 	new.ex_anon_gid = nxp->ex_anon_gid;
@@ -1090,8 +1088,7 @@ exp_export(struct nfsctl_export *nxp)
 	} else
 		err = 0;
 finish:
-	if (new.ex_path)
-		kfree(new.ex_path);
+	kfree(new.ex_pathname);
 	if (exp)
 		exp_put(exp);
 	if (fsid_key && !IS_ERR(fsid_key))
@@ -1360,7 +1357,7 @@ exp_pseudoroot(struct svc_rqst *rqstp, struct svc_fh *fhp)
 	exp = rqst_exp_find(rqstp, FSID_NUM, fsidv);
 	if (IS_ERR(exp))
 		return nfserrno(PTR_ERR(exp));
-	rv = fh_compose(fhp, exp, exp->ex_dentry, NULL);
+	rv = fh_compose(fhp, exp, exp->ex_path.dentry, NULL);
 	if (rv)
 		goto out;
 	rv = check_nfsd_access(exp, rqstp);