30 files changed, 82 insertions, 74 deletions

diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index fd4cf2c..bec25f7 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -207,7 +207,7 @@ adfs_hash(const struct dentry *parent, struct qstr *qstr)
 	 */
 	qstr->len = i = name_len;
 	name = qstr->name;
-	hash = init_name_hash();
+	hash = init_name_hash(parent);
 	while (i--) {
 		char c;
 
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index 00d3002..eb32029 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -61,7 +61,7 @@ affs_get_toupper(struct super_block *sb)
  * Note: the dentry argument is the parent dentry.
  */
 static inline int
-__affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate)
+__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t toupper, bool notruncate)
 {
 	const u8 *name = qstr->name;
 	unsigned long hash;
@@ -72,7 +72,7 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate)
 	if (retval)
 		return retval;
 
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	len = min(qstr->len, AFFSNAMEMAX);
 	for (; len > 0; name++, len--)
 		hash = partial_name_hash(toupper(*name), hash);
@@ -84,7 +84,7 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate)
 static int
 affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 {
-	return __affs_hash_dentry(qstr, affs_toupper,
+	return __affs_hash_dentry(dentry, qstr, affs_toupper,
 				  affs_nofilenametruncate(dentry));
 
 }
@@ -92,7 +92,7 @@ affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 static int
 affs_intl_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 {
-	return __affs_hash_dentry(qstr, affs_intl_toupper,
+	return __affs_hash_dentry(dentry, qstr, affs_intl_toupper,
 				  affs_nofilenametruncate(dentry));
 
 }
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 0146d91..f620160 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -397,7 +397,7 @@ int autofs4_wait(struct autofs_sb_info *sbi,
 		}
 	}
 	qstr.name = name;
-	qstr.hash = full_name_hash(name, qstr.len);
+	qstr.hash = full_name_hash(dentry, name, qstr.len);
 
 	if (mutex_lock_interruptible(&sbi->wq_mutex)) {
 		kfree(qstr.name);
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index f059b59..99bdef6 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -1164,7 +1164,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
 
 			dname.name = rinfo->dname;
 			dname.len = rinfo->dname_len;
-			dname.hash = full_name_hash(dname.name, dname.len);
+			dname.hash = full_name_hash(parent, dname.name, dname.len);
 			vino.ino = le64_to_cpu(rinfo->targeti.in->ino);
 			vino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
 retry_lookup:
@@ -1508,7 +1508,7 @@ int ceph_readdir_prepopulate(struct ceph_mds_request *req,
 
 		dname.name = rde->name;
 		dname.len = rde->name_len;
-		dname.hash = full_name_hash(dname.name, dname.len);
+		dname.hash = full_name_hash(parent, dname.name, dname.len);
 
 		vino.ino = le64_to_cpu(rde->inode.in->ino);
 		vino.snap = le64_to_cpu(rde->inode.in->snapid);
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 2103b82..4e8678a 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -3204,7 +3204,7 @@ static void handle_lease(struct ceph_mds_client *mdsc,
 		WARN_ON(1);
 		goto release;  /* hrm... */
 	}
-	dname.hash = full_name_hash(dname.name, dname.len);
+	dname.hash = full_name_hash(parent, dname.name, dname.len);
 	dentry = d_lookup(parent, &dname);
 	dput(parent);
 	if (!dentry)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index c3eb998..916b2d7 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -856,7 +856,7 @@ static int cifs_ci_hash(const struct dentry *dentry, struct qstr *q)
 	wchar_t c;
 	int i, charlen;
 
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	for (i = 0; i < q->len; i += charlen) {
 		charlen = codepage->char2uni(&q->name[i], q->len - i, &c);
 		/* error out if we can't convert the character */
diff --git a/fs/dcache.c b/fs/dcache.c
index 817c243..9522b8b 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -104,10 +104,8 @@ static unsigned int d_hash_shift __read_mostly;
 
 static struct hlist_bl_head *dentry_hashtable __read_mostly;
 
-static inline struct hlist_bl_head *d_hash(const struct dentry *parent,
-					unsigned int hash)
+static inline struct hlist_bl_head *d_hash(unsigned int hash)
 {
-	hash += (unsigned long) parent / L1_CACHE_BYTES;
 	return dentry_hashtable + hash_32(hash, d_hash_shift);
 }
 
@@ -488,7 +486,7 @@ void __d_drop(struct dentry *dentry)
 		if (unlikely(IS_ROOT(dentry)))
 			b = &dentry->d_sb->s_anon;
 		else
-			b = d_hash(dentry->d_parent, dentry->d_name.hash);
+			b = d_hash(dentry->d_name.hash);
 
 		hlist_bl_lock(b);
 		__hlist_bl_del(&dentry->d_hash);
@@ -1670,7 +1668,7 @@ struct dentry *d_alloc_name(struct dentry *parent, const char *name)
 	struct qstr q;
 
 	q.name = name;
-	q.hash_len = hashlen_string(name);
+	q.hash_len = hashlen_string(parent, name);
 	return d_alloc(parent, &q);
 }
 EXPORT_SYMBOL(d_alloc_name);
@@ -2094,7 +2092,7 @@ struct dentry *__d_lookup_rcu(const struct dentry *parent,
 {
 	u64 hashlen = name->hash_len;
 	const unsigned char *str = name->name;
-	struct hlist_bl_head *b = d_hash(parent, hashlen_hash(hashlen));
+	struct hlist_bl_head *b = d_hash(hashlen_hash(hashlen));
 	struct hlist_bl_node *node;
 	struct dentry *dentry;
 
@@ -2211,7 +2209,7 @@ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name)
 	unsigned int len = name->len;
 	unsigned int hash = name->hash;
 	const unsigned char *str = name->name;
-	struct hlist_bl_head *b = d_hash(parent, hash);
+	struct hlist_bl_head *b = d_hash(hash);
 	struct hlist_bl_node *node;
 	struct dentry *found = NULL;
 	struct dentry *dentry;
@@ -2291,7 +2289,7 @@ struct dentry *d_hash_and_lookup(struct dentry *dir, struct qstr *name)
 	 * calculate the standard hash first, as the d_op->d_hash()
 	 * routine may choose to leave the hash value unchanged.
 	 */
-	name->hash = full_name_hash(name->name, name->len);
+	name->hash = full_name_hash(dir, name->name, name->len);
 	if (dir->d_flags & DCACHE_OP_HASH) {
 		int err = dir->d_op->d_hash(dir, name);
 		if (unlikely(err < 0))
@@ -2364,7 +2362,7 @@ static void __d_rehash(struct dentry * entry, struct hlist_bl_head *b)
 
 static void _d_rehash(struct dentry * entry)
 {
-	__d_rehash(entry, d_hash(entry->d_parent, entry->d_name.hash));
+	__d_rehash(entry, d_hash(entry->d_name.hash));
 }
 
 /**
@@ -2821,7 +2819,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target,
 	 * for the same hash queue because of how unlikely it is.
 	 */
 	__d_drop(dentry);
-	__d_rehash(dentry, d_hash(target->d_parent, target->d_name.hash));
+	__d_rehash(dentry, d_hash(target->d_name.hash));
 
 	/*
 	 * Unhash the target (d_delete() is not usable here).  If exchanging
@@ -2829,8 +2827,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target,
 	 */
 	__d_drop(target);
 	if (exchange) {
-		__d_rehash(target,
-			   d_hash(dentry->d_parent, dentry->d_name.hash));
+		__d_rehash(target, d_hash(dentry->d_name.hash));
 	}
 
 	/* Switch the names.. */
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index 9cb54a3..a5e607e 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -65,7 +65,7 @@ static int efivarfs_d_compare(const struct dentry *parent,
 
 static int efivarfs_d_hash(const struct dentry *dentry, struct qstr *qstr)
 {
-	unsigned long hash = init_name_hash();
+	unsigned long hash = init_name_hash(dentry);
 	const unsigned char *s = qstr->name;
 	unsigned int len = qstr->len;
 
@@ -98,7 +98,7 @@ static struct dentry *efivarfs_alloc_dentry(struct dentry *parent, char *name)
 	q.name = name;
 	q.len = strlen(name);
 
-	err = efivarfs_d_hash(NULL, &q);
+	err = efivarfs_d_hash(parent, &q);
 	if (err)
 		return ERR_PTR(err);
 
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index b7e2b33..1337c0c 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -154,7 +154,7 @@ static int msdos_hash(const struct dentry *dentry, struct qstr *qstr)
 
 	error = msdos_format_name(qstr->name, qstr->len, msdos_name, options);
 	if (!error)
-		qstr->hash = full_name_hash(msdos_name, MSDOS_NAME);
+		qstr->hash = full_name_hash(dentry, msdos_name, MSDOS_NAME);
 	return 0;
 }
 
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 7092584..6ccdf3f 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -107,7 +107,7 @@ static unsigned int vfat_striptail_len(const struct qstr *qstr)
  */
 static int vfat_hash(const struct dentry *dentry, struct qstr *qstr)
 {
-	qstr->hash = full_name_hash(qstr->name, vfat_striptail_len(qstr));
+	qstr->hash = full_name_hash(dentry, qstr->name, vfat_striptail_len(qstr));
 	return 0;
 }
 
@@ -127,7 +127,7 @@ static int vfat_hashi(const struct dentry *dentry, struct qstr *qstr)
 	name = qstr->name;
 	len = vfat_striptail_len(qstr);
 
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	while (len--)
 		hash = partial_name_hash(nls_tolower(t, *name++), hash);
 	qstr->hash = end_name_hash(hash);
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index cbece12..203adf3 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1525,7 +1525,6 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size,
 		goto err;
 	fuse_copy_finish(cs);
 	buf[outarg.namelen] = 0;
-	name.hash = full_name_hash(name.name, name.len);
 
 	down_read(&fc->killsb);
 	err = -ENOENT;
@@ -1576,7 +1575,6 @@ static int fuse_notify_delete(struct fuse_conn *fc, unsigned int size,
 		goto err;
 	fuse_copy_finish(cs);
 	buf[outarg.namelen] = 0;
-	name.hash = full_name_hash(name.name, name.len);
 
 	down_read(&fc->killsb);
 	err = -ENOENT;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index ccd4971..112ab40 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -953,6 +953,7 @@ int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
 	if (!dir)
 		goto unlock;
 
+	name->hash = full_name_hash(dir, name->name, name->len);
 	entry = d_lookup(dir, name);
 	dput(dir);
 	if (!entry)
@@ -1202,7 +1203,7 @@ static int fuse_direntplus_link(struct file *file,
 
 	fc = get_fuse_conn(dir);
 
-	name.hash = full_name_hash(name.name, name.len);
+	name.hash = full_name_hash(parent, name.name, name.len);
 	dentry = d_lookup(parent, &name);
 	if (!dentry) {
 retry:
diff --git a/fs/hfs/string.c b/fs/hfs/string.c
index 85b610c..ec9f164 100644
--- a/fs/hfs/string.c
+++ b/fs/hfs/string.c
@@ -59,7 +59,7 @@ int hfs_hash_dentry(const struct dentry *dentry, struct qstr *this)
 	if (len > HFS_NAMELEN)
 		len = HFS_NAMELEN;
 
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	for (; len; len--)
 		hash = partial_name_hash(caseorder[*name++], hash);
 	this->hash = end_name_hash(hash);
diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c
index e8ef121..c13c8a2 100644
--- a/fs/hfsplus/unicode.c
+++ b/fs/hfsplus/unicode.c
@@ -346,7 +346,7 @@ int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str)
 
 	casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags);
 	decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags);
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	astr = str->name;
 	len = str->len;
 	while (len > 0) {
diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c
index fa27980..60e6d33 100644
--- a/fs/hpfs/dentry.c
+++ b/fs/hpfs/dentry.c
@@ -26,7 +26,7 @@ static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 		/*return -ENOENT;*/
 	x:
 
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	for (i = 0; i < l; i++)
 		hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash);
 	qstr->hash = end_name_hash(hash);
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 131dedc..761fade 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -174,7 +174,7 @@ struct iso9660_options{
  * Compute the hash for the isofs name corresponding to the dentry.
  */
 static int
-isofs_hashi_common(struct qstr *qstr, int ms)
+isofs_hashi_common(const struct dentry *dentry, struct qstr *qstr, int ms)
 {
 	const char *name;
 	int len;
@@ -188,7 +188,7 @@ isofs_hashi_common(struct qstr *qstr, int ms)
 			len--;
 	}
 
-	hash = init_name_hash();
+	hash = init_name_hash(dentry);
 	while (len--) {
 		c = tolower(*name++);
 		hash = partial_name_hash(c, hash);
@@ -231,7 +231,7 @@ static int isofs_dentry_cmp_common(
 static int
 isofs_hashi(const struct dentry *dentry, struct qstr *qstr)
 {
-	return isofs_hashi_common(qstr, 0);
+	return isofs_hashi_common(dentry, qstr, 0);
 }
 
 static int
@@ -246,7 +246,7 @@ isofs_dentry_cmpi(const struct dentry *parent, const struct dentry *dentry,
  * Compute the hash for the isofs name corresponding to the dentry.
  */
 static int
-isofs_hash_common(struct qstr *qstr, int ms)
+isofs_hash_common(const struct dentry *dentry, struct qstr *qstr, int ms)
 {
 	const char *name;
 	int len;
@@ -258,7 +258,7 @@ isofs_hash_common(struct qstr *qstr, int ms)
 			len--;
 	}
 
-	qstr->hash = full_name_hash(name, len);
+	qstr->hash = full_name_hash(dentry, name, len);
 
 	return 0;
 }
@@ -266,13 +266,13 @@ isofs_hash_common(struct qstr *qstr, int ms)
 static int
 isofs_hash_ms(const struct dentry *dentry, struct qstr *qstr)
 {
-	return isofs_hash_common(qstr, 1);
+	return isofs_hash_common(dentry, qstr, 1);
 }
 
 static int
 isofs_hashi_ms(const struct dentry *dentry, struct qstr *qstr)
 {
-	return isofs_hashi_common(qstr, 1);
+	return isofs_hashi_common(dentry, qstr, 1);
 }
 
 static int
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 84c4bf3..30eb33ff 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -81,6 +81,7 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
 	struct jffs2_full_dirent *fd = NULL, *fd_list;
 	uint32_t ino = 0;
 	struct inode *inode = NULL;
+	unsigned int nhash;
 
 	jffs2_dbg(1, "jffs2_lookup()\n");
 
@@ -89,11 +90,14 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
 
 	dir_f = JFFS2_INODE_INFO(dir_i);
 
+	/* The 'nhash' on the fd_list is not the same as the dentry hash */
+	nhash = full_name_hash(NULL, target->d_name.name, target->d_name.len);
+
 	mutex_lock(&dir_f->sem);
 
 	/* NB: The 2.2 backport will need to explicitly check for '.' and '..' here */
-	for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= target->d_name.hash; fd_list = fd_list->next) {
-		if (fd_list->nhash == target->d_name.hash &&
+	for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= nhash; fd_list = fd_list->next) {
+		if (fd_list->nhash == nhash &&
 		    (!fd || fd_list->version > fd->version) &&
 		    strlen(fd_list->name) == target->d_name.len &&
 		    !strncmp(fd_list->name, target->d_name.name, target->d_name.len)) {
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index bfebbf1..06a71db 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -674,7 +674,7 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 		}
 	}
 
-	fd->nhash = full_name_hash(fd->name, rd->nsize);
+	fd->nhash = full_name_hash(NULL, fd->name, rd->nsize);
 	fd->next = NULL;
 	fd->name[rd->nsize] = '\0';
 
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 9ad5ba4..90431dd 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -1100,7 +1100,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
 	fd->next = NULL;
 	fd->version = je32_to_cpu(rd->version);
 	fd->ino = je32_to_cpu(rd->ino);
-	fd->nhash = full_name_hash(fd->name, checkedlen);
+	fd->nhash = full_name_hash(NULL, fd->name, checkedlen);
 	fd->type = rd->type;
 	jffs2_add_fd_to_list(c, fd, &ic->scan_dents);
 
diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c
index bc53854..be7c8a6 100644
--- a/fs/jffs2/summary.c
+++ b/fs/jffs2/summary.c
@@ -476,7 +476,7 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
 				fd->next = NULL;
 				fd->version = je32_to_cpu(spd->version);
 				fd->ino = je32_to_cpu(spd->ino);
-				fd->nhash = full_name_hash(fd->name, checkedlen);
+				fd->nhash = full_name_hash(NULL, fd->name, checkedlen);
 				fd->type = spd->type;
 
 				jffs2_add_fd_to_list(c, fd, &ic->scan_dents);
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index 7fb187a..cda9a36 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -245,7 +245,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
 	fd->version = je32_to_cpu(rd->version);
 	fd->ino = je32_to_cpu(rd->ino);
-	fd->nhash = full_name_hash(name, namelen);
+	fd->nhash = full_name_hash(NULL, name, namelen);
 	fd->type = rd->type;
 	memcpy(fd->name, name, namelen);
 	fd->name[namelen]=0;
@@ -598,7 +598,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 		jffs2_add_fd_to_list(c, fd, &dir_f->dents);
 		mutex_unlock(&dir_f->sem);
 	} else {
-		uint32_t nhash = full_name_hash(name, namelen);
+		uint32_t nhash = full_name_hash(NULL, name, namelen);
 
 		fd = dir_f->dents;
 		/* We don't actually want to reserve any space, but we do
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 539dedd..04baf0d 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1564,7 +1564,7 @@ static int jfs_ci_hash(const struct dentry *dir, struct qstr *this)
 	unsigned long hash;
 	int i;
 
-	hash = init_name_hash();
+	hash = init_name_hash(dir);
 	for (i=0; i < this->len; i++)
 		hash = partial_name_hash(tolower(this->name[i]), hash);
 	this->hash = end_name_hash(hash);
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index 8a65240..e57174d 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -336,11 +336,11 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
  */
 static unsigned int kernfs_name_hash(const char *name, const void *ns)
 {
-	unsigned long hash = init_name_hash();
+	unsigned long hash = init_name_hash(ns);
 	unsigned int len = strlen(name);
 	while (len--)
 		hash = partial_name_hash(*name++, hash);
-	hash = (end_name_hash(hash) ^ hash_ptr((void *)ns, 31));
+	hash = end_name_hash(hash);
 	hash &= 0x7fffffffU;
 	/* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */
 	if (hash < 2)
diff --git a/fs/namei.c b/fs/namei.c
index 70580ab..7cb9be3 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1890,9 +1890,9 @@ static inline unsigned int fold_hash(unsigned long x, unsigned long y)
  * payload bytes, to match the way that hash_name() iterates until it
  * finds the delimiter after the name.
  */
-unsigned int full_name_hash(const char *name, unsigned int len)
+unsigned int full_name_hash(const void *salt, const char *name, unsigned int len)
 {
-	unsigned long a, x = 0, y = 0;
+	unsigned long a, x = 0, y = (unsigned long)salt;
 
 	for (;;) {
 		if (!len)
@@ -1911,15 +1911,19 @@ done:
 EXPORT_SYMBOL(full_name_hash);
 
 /* Return the "hash_len" (hash and length) of a null-terminated string */
-u64 hashlen_string(const char *name)
+u64 hashlen_string(const void *salt, const char *name)
 {
-	unsigned long a = 0, x = 0, y = 0, adata, mask, len;
+	unsigned long a = 0, x = 0, y = (unsigned long)salt;
+	unsigned long adata, mask, len;
 	const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
 
-	len = -sizeof(unsigned long);
+	len = 0;
+	goto inside;
+
 	do {
 		HASH_MIX(x, y, a);
 		len += sizeof(unsigned long);
+inside:
 		a = load_unaligned_zeropad(name+len);
 	} while (!has_zero(a, &adata, &constants));
 
@@ -1935,15 +1939,19 @@ EXPORT_SYMBOL(hashlen_string);
  * Calculate the length and hash of the path component, and
  * return the "hash_len" as the result.
  */
-static inline u64 hash_name(const char *name)
+static inline u64 hash_name(const void *salt, const char *name)
 {
-	unsigned long a = 0, b, x = 0, y = 0, adata, bdata, mask, len;
+	unsigned long a = 0, b, x = 0, y = (unsigned long)salt;
+	unsigned long adata, bdata, mask, len;
 	const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
 
-	len = -sizeof(unsigned long);
+	len = 0;
+	goto inside;
+
 	do {
 		HASH_MIX(x, y, a);
 		len += sizeof(unsigned long);
+inside:
 		a = load_unaligned_zeropad(name+len);
 		b = a ^ REPEAT_BYTE('/');
 	} while (!(has_zero(a, &adata, &constants) | has_zero(b, &bdata, &constants)));
@@ -1959,9 +1967,9 @@ static inline u64 hash_name(const char *name)
 #else	/* !CONFIG_DCACHE_WORD_ACCESS: Slow, byte-at-a-time version */
 
 /* Return the hash of a string of known length */
-unsigned int full_name_hash(const char *name, unsigned int len)
+unsigned int full_name_hash(const void *salt, const char *name, unsigned int len)
 {
-	unsigned long hash = init_name_hash();
+	unsigned long hash = init_name_hash(salt);
 	while (len--)
 		hash = partial_name_hash((unsigned char)*name++, hash);
 	return end_name_hash(hash);
@@ -1969,9 +1977,9 @@ unsigned int full_name_hash(const char *name, unsigned int len)
 EXPORT_SYMBOL(full_name_hash);
 
 /* Return the "hash_len" (hash and length) of a null-terminated string */
-u64 hashlen_string(const char *name)
+u64 hashlen_string(const void *salt, const char *name)
 {
-	unsigned long hash = init_name_hash();
+	unsigned long hash = init_name_hash(salt);
 	unsigned long len = 0, c;
 
 	c = (unsigned char)*name;
@@ -1988,9 +1996,9 @@ EXPORT_SYMBOL(hashlen_string);
  * We know there's a real path component here of at least
  * one character.
  */
-static inline u64 hash_name(const char *name)
+static inline u64 hash_name(const void *salt, const char *name)
 {
-	unsigned long hash = init_name_hash();
+	unsigned long hash = init_name_hash(salt);
 	unsigned long len = 0, c;
 
 	c = (unsigned char)*name;
@@ -2030,7 +2038,7 @@ static int link_path_walk(const char *name, struct nameidata *nd)
 		if (err)
 			return err;
 
-		hash_len = hash_name(name);
+		hash_len = hash_name(nd->path.dentry, name);
 
 		type = LAST_NORM;
 		if (name[0] == '.') switch (hashlen_len(hash_len)) {
@@ -2436,7 +2444,7 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
 
 	this.name = name;
 	this.len = len;
-	this.hash = full_name_hash(name, len);
+	this.hash = full_name_hash(base, name, len);
 	if (!len)
 		return ERR_PTR(-EACCES);
 
@@ -2489,7 +2497,7 @@ struct dentry *lookup_one_len_unlocked(const char *name,
 
 	this.name = name;
 	this.len = len;
-	this.hash = full_name_hash(name, len);
+	this.hash = full_name_hash(base, name, len);
 	if (!len)
 		return ERR_PTR(-EACCES);
 
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index bfdad00..9add7ab 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -139,7 +139,7 @@ ncp_hash_dentry(const struct dentry *dentry, struct qstr *this)
 		int i;
 
 		t = NCP_IO_TABLE(sb);
-		hash = init_name_hash();
+		hash = init_name_hash(dentry);
 		for (i=0; i<this->len ; i++)
 			hash = partial_name_hash(ncp_tolower(t, this->name[i]),
 									hash);
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index aaf7bd0..d6935a9 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -232,7 +232,7 @@ int nfs_readdir_make_qstr(struct qstr *string, const char *name, unsigned int le
 	 * in a page cache page which kmemleak does not scan.
 	 */
 	kmemleak_not_leak(string->name);
-	string->hash = full_name_hash(name, len);
+	string->hash = full_name_hash(NULL, name, len);
 	return 0;
 }
 
@@ -497,7 +497,7 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
 		if (filename.len == 2 && filename.name[1] == '.')
 			return;
 	}
-	filename.hash = full_name_hash(filename.name, filename.len);
+	filename.hash = full_name_hash(parent, filename.name, filename.len);
 
 	dentry = d_lookup(parent, &filename);
 again:
diff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c
index 443abec..3582583 100644
--- a/fs/ntfs/namei.c
+++ b/fs/ntfs/namei.c
@@ -253,7 +253,7 @@ handle_name:
 		err = (signed)nls_name.len;
 		goto err_out;
 	}
-	nls_name.hash = full_name_hash(nls_name.name, nls_name.len);
+	nls_name.hash = full_name_hash(dent, nls_name.name, nls_name.len);
 
 	dent = d_add_ci(dent, dent_inode, &nls_name);
 	kfree(nls_name.name);
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 004f2cb..8107d0d 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -47,7 +47,7 @@
 #define DLM_HASH_BUCKETS	(DLM_HASH_PAGES * DLM_BUCKETS_PER_PAGE)
 
 /* Intended to make it easier for us to switch out hash functions */
-#define dlm_lockid_hash(_n, _l) full_name_hash(_n, _l)
+#define dlm_lockid_hash(_n, _l) full_name_hash(NULL, _n, _l)
 
 enum dlm_mle_type {
 	DLM_MLE_BLOCK = 0,
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 5e57c3e..b59db94 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -623,7 +623,7 @@ static bool proc_sys_fill_cache(struct file *file,
 
 	qname.name = table->procname;
 	qname.len  = strlen(table->procname);
-	qname.hash = full_name_hash(qname.name, qname.len);
+	qname.hash = full_name_hash(dir, qname.name, qname.len);
 
 	child = d_lookup(dir, &qname);
 	if (!child) {
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index 90b60c0..a42de45c 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -33,7 +33,7 @@ static int sysv_hash(const struct dentry *dentry, struct qstr *qstr)
 	   function. */
 	if (qstr->len > SYSV_NAMELEN) {
 		qstr->len = SYSV_NAMELEN;
-		qstr->hash = full_name_hash(qstr->name, qstr->len);
+		qstr->hash = full_name_hash(dentry, qstr->name, qstr->len);
 	}
 	return 0;
 }