move d_rcu from overlapping d_child to overlapping d_alias

commit 946e51f2bf37f1656916eb75bd0742ba33983c28 upstream.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 87ba7cf..65d633f 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -164,7 +164,7 @@ static void spufs_prune_dir(struct dentry *dir)
        struct dentry *dentry, *tmp;
 
        mutex_lock(&dir->d_inode->i_mutex);
-       list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) {
+       list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) {
                spin_lock(&dentry->d_lock);
                if (!(d_unhashed(dentry)) && dentry->d_inode) {
                        dget_dlock(dentry);

diff --git a/drivers/staging/lustre/lustre/llite/dcache.c b/drivers/staging/lustre/lustre/llite/dcache.c
index e7629be..c6ca9ca 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/dcache.c
+++ b/drivers/staging/lustre/lustre/llite/dcache.c
@@ -278,7 +278,7 @@ void ll_invalidate_aliases(struct inode *inode)
               inode->i_ino, inode->i_generation, inode);
 
        ll_lock_dcache(inode);
-       ll_d_hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) {
+       ll_d_hlist_for_each_entry(dentry, p, &inode->i_dentry, d_u.d_alias) {
                CDEBUG(D_DENTRY, "dentry in drop %.*s (%p) parent %p "
                       "inode %p flags %d\n", dentry->d_name.len,
                       dentry->d_name.name, dentry, dentry->d_parent,

diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index b868c2b..0431329 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -665,7 +665,7 @@ void lustre_dump_dentry(struct dentry *dentry, int recur)
                return;
 
        list_for_each(tmp, &dentry->d_subdirs) {
-               struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
+               struct dentry *d = list_entry(tmp, struct dentry, d_child);
                lustre_dump_dentry(d, recur - 1);
        }
 }

diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c
index 34815b5..cd90a65 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/namei.c
+++ b/drivers/staging/lustre/lustre/llite/namei.c
@@ -175,14 +175,14 @@ static void ll_invalidate_negative_children(struct inode *dir)
        struct ll_d_hlist_node *p;
 
        ll_lock_dcache(dir);
-       ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_alias) {
+       ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_u.d_alias) {
                spin_lock(&dentry->d_lock);
                if (!list_empty(&dentry->d_subdirs)) {
                        struct dentry *child;
 
                        list_for_each_entry_safe(child, tmp_subdir,
                                                 &dentry->d_subdirs,
-                                                d_u.d_child) {
+                                                d_child) {
                                if (child->d_inode == NULL)
                                        d_lustre_invalidate(child, 1);
                        }
@@ -363,7 +363,7 @@ static struct dentry *ll_find_alias(struct inode *inode, struct dentry *dentry)
        discon_alias = invalid_alias = NULL;
 
        ll_lock_dcache(inode);
-       ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
+       ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_u.d_alias) {
                LASSERT(alias != dentry);
 
                spin_lock(&alias->d_lock);
@@ -953,7 +953,7 @@ static void ll_get_child_fid(struct inode * dir, struct qstr *name,
 {
        struct dentry *parent, *child;
 
-       parent = ll_d_hlist_entry(dir->i_dentry, struct dentry, d_alias);
+       parent = ll_d_hlist_entry(dir->i_dentry, struct dentry, d_u.d_alias);
        child = d_lookup(parent, name);
        if (child) {
                if (child->d_inode)

diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index d9a4367..9cca0ea 100644 (file)
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -126,7 +126,7 @@ affs_fix_dcache(struct inode *inode, u32 entry_ino)
 {
        struct dentry *dentry;
        spin_lock(&inode->i_lock);
-       hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {
                if (entry_ino == (u32)(long)dentry->d_fsdata) {
                        dentry->d_fsdata = (void *)inode->i_ino;
                        break;

diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 3d9d3f5..d096316 100644 (file)
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -91,7 +91,7 @@ static struct dentry *get_next_positive_subdir(struct dentry *prev,
        spin_lock(&root->d_lock);
 
        if (prev)
-               next = prev->d_u.d_child.next;
+               next = prev->d_child.next;
        else {
                prev = dget_dlock(root);
                next = prev->d_subdirs.next;
@@ -105,13 +105,13 @@ cont:
                return NULL;
        }
 
-       q = list_entry(next, struct dentry, d_u.d_child);
+       q = list_entry(next, struct dentry, d_child);
 
        spin_lock_nested(&q->d_lock, DENTRY_D_LOCK_NESTED);
        /* Already gone or negative dentry (under construction) - try next */
        if (!d_count(q) || !simple_positive(q)) {
                spin_unlock(&q->d_lock);
-               next = q->d_u.d_child.next;
+               next = q->d_child.next;
                goto cont;
        }
        dget_dlock(q);
@@ -161,13 +161,13 @@ again:
                                goto relock;
                        }
                        spin_unlock(&p->d_lock);
-                       next = p->d_u.d_child.next;
+                       next = p->d_child.next;
                        p = parent;
                        if (next != &parent->d_subdirs)
                                break;
                }
        }
-       ret = list_entry(next, struct dentry, d_u.d_child);
+       ret = list_entry(next, struct dentry, d_child);
 
        spin_lock_nested(&ret->d_lock, DENTRY_D_LOCK_NESTED);
        /* Negative dentry - try next */
@@ -447,7 +447,7 @@ found:
        spin_lock(&sbi->lookup_lock);
        spin_lock(&expired->d_parent->d_lock);
        spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED);
-       list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
+       list_move(&expired->d_parent->d_subdirs, &expired->d_child);
        spin_unlock(&expired->d_lock);
        spin_unlock(&expired->d_parent->d_lock);
        spin_unlock(&sbi->lookup_lock);

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 2a69bde..b3f4794 100644 (file)
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -655,7 +655,7 @@ static void autofs_clear_leaf_automount_flags(struct dentry *dentry)
        /* only consider parents below dentrys in the root */
        if (IS_ROOT(parent->d_parent))
                return;
-       d_child = &dentry->d_u.d_child;
+       d_child = &dentry->d_child;
        /* Set parent managed if it's becoming empty */
        if (d_child->next == &parent->d_subdirs &&
            d_child->prev == &parent->d_subdirs)

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 868b61d..ea3de8b 100644 (file)
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -103,7 +103,7 @@ static unsigned fpos_off(loff_t p)
 /*
  * When possible, we try to satisfy a readdir by peeking at the
  * dcache.  We make this work by carefully ordering dentries on
- * d_u.d_child when we initially get results back from the MDS, and
+ * d_child when we initially get results back from the MDS, and
  * falling back to a "normal" sync readdir if any dentries in the dir
  * are dropped.
  *
@@ -138,11 +138,11 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx)
                p = parent->d_subdirs.prev;
                dout(" initial p %p/%p\n", p->prev, p->next);
        } else {
-               p = last->d_u.d_child.prev;
+               p = last->d_child.prev;
        }
 
 more:
-       dentry = list_entry(p, struct dentry, d_u.d_child);
+       dentry = list_entry(p, struct dentry, d_child);
        di = ceph_dentry(dentry);
        while (1) {
                dout(" p %p/%p %s d_subdirs %p/%p\n", p->prev, p->next,
@@ -164,7 +164,7 @@ more:
                     !dentry->d_inode ? " null" : "");
                spin_unlock(&dentry->d_lock);
                p = p->prev;
-               dentry = list_entry(p, struct dentry, d_u.d_child);
+               dentry = list_entry(p, struct dentry, d_child);
                di = ceph_dentry(dentry);
        }
 

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 8549a48..74a479e 100644 (file)
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -880,9 +880,9 @@ static void ceph_set_dentry_offset(struct dentry *dn)
 
        spin_lock(&dir->d_lock);
        spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
-       list_move(&dn->d_u.d_child, &dir->d_subdirs);
+       list_move(&dn->d_child, &dir->d_subdirs);
        dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset,
-            dn->d_u.d_child.prev, dn->d_u.d_child.next);
+            dn->d_child.prev, dn->d_child.next);
        spin_unlock(&dn->d_lock);
        spin_unlock(&dir->d_lock);
 }
@@ -1309,7 +1309,7 @@ retry_lookup:
                        /* reorder parent's d_subdirs */
                        spin_lock(&parent->d_lock);
                        spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
-                       list_move(&dn->d_u.d_child, &parent->d_subdirs);
+                       list_move(&dn->d_child, &parent->d_subdirs);
                        spin_unlock(&dn->d_lock);
                        spin_unlock(&parent->d_lock);
                }

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 2a93255..ab9f992 100644 (file)
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -874,7 +874,7 @@ inode_has_hashed_dentries(struct inode *inode)
        struct dentry *dentry;
 
        spin_lock(&inode->i_lock);
-       hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {
                if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
                        spin_unlock(&inode->i_lock);
                        return true;

diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 1da168c..9bc1147 100644 (file)
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -92,7 +92,7 @@ static void coda_flag_children(struct dentry *parent, int flag)
        struct dentry *de;
 
        spin_lock(&parent->d_lock);
-       list_for_each_entry(de, &parent->d_subdirs, d_u.d_child) {
+       list_for_each_entry(de, &parent->d_subdirs, d_child) {
                /* don't know what to do with negative dentries */
                if (de->d_inode ) 
                        coda_flag_inode(de->d_inode, flag);

diff --git a/fs/dcache.c b/fs/dcache.c
index d449b1a..09f7a61 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -44,7 +44,7 @@
 /*
  * Usage:
  * dcache->d_inode->i_lock protects:
- *   - i_dentry, d_alias, d_inode of aliases
+ *   - i_dentry, d_u.d_alias, d_inode of aliases
  * dcache_hash_bucket lock protects:
  *   - the dcache hash table
  * s_anon bl list spinlock protects:
@@ -59,7 +59,7 @@
  *   - d_unhashed()
  *   - d_parent and d_subdirs
  *   - childrens' d_child and d_parent
- *   - d_alias, d_inode
+ *   - d_u.d_alias, d_inode
  *
  * Ordering:
  * dentry->d_inode->i_lock
@@ -268,7 +268,6 @@ static void __d_free(struct rcu_head *head)
 {
        struct dentry *dentry = container_of(head, struct dentry, d_u.d_rcu);
 
-       WARN_ON(!hlist_unhashed(&dentry->d_alias));
        if (dname_external(dentry))
                kfree(dentry->d_name.name);
        kmem_cache_free(dentry_cache, dentry); 
@@ -276,6 +275,7 @@ static void __d_free(struct rcu_head *head)
 
 static void dentry_free(struct dentry *dentry)
 {
+       WARN_ON(!hlist_unhashed(&dentry->d_u.d_alias));
        /* if dentry was never visible to RCU, immediate free is OK */
        if (!(dentry->d_flags & DCACHE_RCUACCESS))
                __d_free(&dentry->d_u.d_rcu);
@@ -309,7 +309,7 @@ static void dentry_iput(struct dentry * dentry)
        struct inode *inode = dentry->d_inode;
        if (inode) {
                dentry->d_inode = NULL;
-               hlist_del_init(&dentry->d_alias);
+               hlist_del_init(&dentry->d_u.d_alias);
                spin_unlock(&dentry->d_lock);
                spin_unlock(&inode->i_lock);
                if (!inode->i_nlink)
@@ -333,7 +333,7 @@ static void dentry_unlink_inode(struct dentry * dentry)
 {
        struct inode *inode = dentry->d_inode;
        dentry->d_inode = NULL;
-       hlist_del_init(&dentry->d_alias);
+       hlist_del_init(&dentry->d_u.d_alias);
        dentry_rcuwalk_barrier(dentry);
        spin_unlock(&dentry->d_lock);
        spin_unlock(&inode->i_lock);
@@ -488,7 +488,7 @@ static void __dentry_kill(struct dentry *dentry)
        }
        /* if it was on the hash then remove it */
        __d_drop(dentry);
-       list_del(&dentry->d_u.d_child);
+       list_del(&dentry->d_child);
        /*
         * Inform d_walk() that we are no longer attached to the
         * dentry tree
@@ -772,7 +772,7 @@ static struct dentry *__d_find_alias(struct inode *inode, int want_discon)
 
 again:
        discon_alias = NULL;
-       hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(alias, &inode->i_dentry, d_u.d_alias) {
                spin_lock(&alias->d_lock);
                if (S_ISDIR(inode->i_mode) || !d_unhashed(alias)) {
                        if (IS_ROOT(alias) &&
@@ -825,7 +825,7 @@ void d_prune_aliases(struct inode *inode)
        struct dentry *dentry;
 restart:
        spin_lock(&inode->i_lock);
-       hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {
                spin_lock(&dentry->d_lock);
                if (!dentry->d_lockref.count) {
                        /*
@@ -1110,7 +1110,7 @@ repeat:
 resume:
        while (next != &this_parent->d_subdirs) {
                struct list_head *tmp = next;
-               struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
+               struct dentry *dentry = list_entry(tmp, struct dentry, d_child);
                next = tmp->next;
 
                spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
@@ -1162,7 +1162,7 @@ resume:
                        goto rename_retry;
                }
                rcu_read_unlock();
-               next = child->d_u.d_child.next;
+               next = child->d_child.next;
                goto resume;
        }
        if (need_seqretry(&rename_lock, seq)) {
@@ -1497,8 +1497,8 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
        INIT_HLIST_BL_NODE(&dentry->d_hash);
        INIT_LIST_HEAD(&dentry->d_lru);
        INIT_LIST_HEAD(&dentry->d_subdirs);
-       INIT_HLIST_NODE(&dentry->d_alias);
-       INIT_LIST_HEAD(&dentry->d_u.d_child);
+       INIT_HLIST_NODE(&dentry->d_u.d_alias);
+       INIT_LIST_HEAD(&dentry->d_child);
        d_set_d_op(dentry, dentry->d_sb->s_d_op);
 
        this_cpu_inc(nr_dentry);
@@ -1528,7 +1528,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
         */
        __dget_dlock(parent);
        dentry->d_parent = parent;
-       list_add(&dentry->d_u.d_child, &parent->d_subdirs);
+       list_add(&dentry->d_child, &parent->d_subdirs);
        spin_unlock(&parent->d_lock);
 
        return dentry;
@@ -1588,7 +1588,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode)
        if (inode) {
                if (unlikely(IS_AUTOMOUNT(inode)))
                        dentry->d_flags |= DCACHE_NEED_AUTOMOUNT;
-               hlist_add_head(&dentry->d_alias, &inode->i_dentry);
+               hlist_add_head(&dentry->d_u.d_alias, &inode->i_dentry);
        }
        dentry->d_inode = inode;
        dentry_rcuwalk_barrier(dentry);
@@ -1613,7 +1613,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode)
  
 void d_instantiate(struct dentry *entry, struct inode * inode)
 {
-       BUG_ON(!hlist_unhashed(&entry->d_alias));
+       BUG_ON(!hlist_unhashed(&entry->d_u.d_alias));
        if (inode)
                spin_lock(&inode->i_lock);
        __d_instantiate(entry, inode);
@@ -1652,7 +1652,7 @@ static struct dentry *__d_instantiate_unique(struct dentry *entry,
                return NULL;
        }
 
-       hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(alias, &inode->i_dentry, d_u.d_alias) {
                /*
                 * Don't need alias->d_lock here, because aliases with
                 * d_parent == entry->d_parent are not subject to name or
@@ -1678,7 +1678,7 @@ struct dentry *d_instantiate_unique(struct dentry *entry, struct inode *inode)
 {
        struct dentry *result;
 
-       BUG_ON(!hlist_unhashed(&entry->d_alias));
+       BUG_ON(!hlist_unhashed(&entry->d_u.d_alias));
 
        if (inode)
                spin_lock(&inode->i_lock);
@@ -1721,7 +1721,7 @@ static struct dentry * __d_find_any_alias(struct inode *inode)
 
        if (hlist_empty(&inode->i_dentry))
                return NULL;
-       alias = hlist_entry(inode->i_dentry.first, struct dentry, d_alias);
+       alias = hlist_entry(inode->i_dentry.first, struct dentry, d_u.d_alias);
        __dget(alias);
        return alias;
 }
@@ -1795,7 +1795,7 @@ struct dentry *d_obtain_alias(struct inode *inode)
        spin_lock(&tmp->d_lock);
        tmp->d_inode = inode;
        tmp->d_flags |= DCACHE_DISCONNECTED;
-       hlist_add_head(&tmp->d_alias, &inode->i_dentry);
+       hlist_add_head(&tmp->d_u.d_alias, &inode->i_dentry);
        hlist_bl_lock(&tmp->d_sb->s_anon);
        hlist_bl_add_head(&tmp->d_hash, &tmp->d_sb->s_anon);
        hlist_bl_unlock(&tmp->d_sb->s_anon);
@@ -2238,7 +2238,7 @@ int d_validate(struct dentry *dentry, struct dentry *dparent)
        struct dentry *child;
 
        spin_lock(&dparent->d_lock);
-       list_for_each_entry(child, &dparent->d_subdirs, d_u.d_child) {
+       list_for_each_entry(child, &dparent->d_subdirs, d_child) {
                if (dentry == child) {
                        spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
                        __dget_dlock(dentry);
@@ -2485,8 +2485,8 @@ static void __d_move(struct dentry * dentry, struct dentry * target)
        /* Unhash the target: dput() will then get rid of it */
        __d_drop(target);
 
-       list_del(&dentry->d_u.d_child);
-       list_del(&target->d_u.d_child);
+       list_del(&dentry->d_child);
+       list_del(&target->d_child);
 
        /* Switch the names.. */
        switch_names(dentry, target);
@@ -2496,15 +2496,15 @@ static void __d_move(struct dentry * dentry, struct dentry * target)
        if (IS_ROOT(dentry)) {
                dentry->d_parent = target->d_parent;
                target->d_parent = target;
-               INIT_LIST_HEAD(&target->d_u.d_child);
+               INIT_LIST_HEAD(&target->d_child);
        } else {
                swap(dentry->d_parent, target->d_parent);
 
                /* And add them back to the (new) parent lists */
-               list_add(&target->d_u.d_child, &target->d_parent->d_subdirs);
+               list_add(&target->d_child, &target->d_parent->d_subdirs);
        }
 
-       list_add(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
+       list_add(&dentry->d_child, &dentry->d_parent->d_subdirs);
 
        write_seqcount_end(&target->d_seq);
        write_seqcount_end(&dentry->d_seq);
@@ -2611,9 +2611,9 @@ static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon)
        swap(dentry->d_name.hash, anon->d_name.hash);
 
        dentry->d_parent = dentry;
-       list_del_init(&dentry->d_u.d_child);
+       list_del_init(&dentry->d_child);
        anon->d_parent = dparent;
-       list_move(&anon->d_u.d_child, &dparent->d_subdirs);
+       list_move(&anon->d_child, &dparent->d_subdirs);
 
        write_seqcount_end(&dentry->d_seq);
        write_seqcount_end(&anon->d_seq);
@@ -3241,7 +3241,7 @@ void d_tmpfile(struct dentry *dentry, struct inode *inode)
 {
        inode_dec_link_count(inode);
        BUG_ON(dentry->d_name.name != dentry->d_iname ||
-               !hlist_unhashed(&dentry->d_alias) ||
+               !hlist_unhashed(&dentry->d_u.d_alias) ||
                !d_unlinked(dentry));
        spin_lock(&dentry->d_parent->d_lock);
        spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);

diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 1576195..f3784dd 100644 (file)
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -549,10 +549,10 @@ void debugfs_remove_recursive(struct dentry *dentry)
        /*
         * The parent->d_subdirs is protected by the d_lock. Outside that
         * lock, the child can be unlinked and set to be freed which can
-        * use the d_u.d_child as the rcu head and corrupt this list.
+        * use the d_child as the rcu head and corrupt this list.
         */
        spin_lock(&parent->d_lock);
-       list_for_each_entry(child, &parent->d_subdirs, d_u.d_child) {
+       list_for_each_entry(child, &parent->d_subdirs, d_child) {
                if (!debugfs_positive(child))
                        continue;
 

diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index c43fe9b..b75f174 100644 (file)
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -50,7 +50,7 @@ find_acceptable_alias(struct dentry *result,
 
        inode = result->d_inode;
        spin_lock(&inode->i_lock);
-       hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {
                dget(dentry);
                spin_unlock(&inode->i_lock);
                if (toput)

diff --git a/fs/libfs.c b/fs/libfs.c
index 193e0c2..80d1895 100644 (file)
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -105,18 +105,18 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence)
 
                        spin_lock(&dentry->d_lock);
                        /* d_lock not required for cursor */
-                       list_del(&cursor->d_u.d_child);
+                       list_del(&cursor->d_child);
                        p = dentry->d_subdirs.next;
                        while (n && p != &dentry->d_subdirs) {
                                struct dentry *next;
-                               next = list_entry(p, struct dentry, d_u.d_child);
+                               next = list_entry(p, struct dentry, d_child);
                                spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
                                if (simple_positive(next))
                                        n--;
                                spin_unlock(&next->d_lock);
                                p = p->next;
                        }
-                       list_add_tail(&cursor->d_u.d_child, p);
+                       list_add_tail(&cursor->d_child, p);
                        spin_unlock(&dentry->d_lock);
                }
        }
@@ -140,7 +140,7 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
 {
        struct dentry *dentry = file->f_path.dentry;
        struct dentry *cursor = file->private_data;
-       struct list_head *p, *q = &cursor->d_u.d_child;
+       struct list_head *p, *q = &cursor->d_child;
 
        if (!dir_emit_dots(file, ctx))
                return 0;
@@ -149,7 +149,7 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
                list_move(q, &dentry->d_subdirs);
 
        for (p = q->next; p != &dentry->d_subdirs; p = p->next) {
-               struct dentry *next = list_entry(p, struct dentry, d_u.d_child);
+               struct dentry *next = list_entry(p, struct dentry, d_child);
                spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
                if (!simple_positive(next)) {
                        spin_unlock(&next->d_lock);
@@ -270,7 +270,7 @@ int simple_empty(struct dentry *dentry)
        int ret = 0;
 
        spin_lock(&dentry->d_lock);
-       list_for_each_entry(child, &dentry->d_subdirs, d_u.d_child) {
+       list_for_each_entry(child, &dentry->d_subdirs, d_child) {
                spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
                if (simple_positive(child)) {
                        spin_unlock(&child->d_lock);

diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 3be0474..0686002 100644 (file)
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -407,7 +407,7 @@ ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
        spin_lock(&parent->d_lock);
        next = parent->d_subdirs.next;
        while (next != &parent->d_subdirs) {
-               dent = list_entry(next, struct dentry, d_u.d_child);
+               dent = list_entry(next, struct dentry, d_child);
                if ((unsigned long)dent->d_fsdata == fpos) {
                        if (dent->d_inode)
                                dget(dent);

diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h
index 32c0658..6d5e7c5 100644 (file)
--- a/fs/ncpfs/ncplib_kernel.h
+++ b/fs/ncpfs/ncplib_kernel.h
@@ -194,7 +194,7 @@ ncp_renew_dentries(struct dentry *parent)
        spin_lock(&parent->d_lock);
        next = parent->d_subdirs.next;
        while (next != &parent->d_subdirs) {
-               dentry = list_entry(next, struct dentry, d_u.d_child);
+               dentry = list_entry(next, struct dentry, d_child);
 
                if (dentry->d_fsdata == NULL)
                        ncp_age_dentry(server, dentry);
@@ -216,7 +216,7 @@ ncp_invalidate_dircache_entries(struct dentry *parent)
        spin_lock(&parent->d_lock);
        next = parent->d_subdirs.next;
        while (next != &parent->d_subdirs) {
-               dentry = list_entry(next, struct dentry, d_u.d_child);
+               dentry = list_entry(next, struct dentry, d_child);
                dentry->d_fsdata = NULL;
                ncp_age_dentry(server, dentry);
                next = next->next;

diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 66984a9..5b8ab0e 100644 (file)
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -58,7 +58,7 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i
                 */
                spin_lock(&sb->s_root->d_inode->i_lock);
                spin_lock(&sb->s_root->d_lock);
-               hlist_del_init(&sb->s_root->d_alias);
+               hlist_del_init(&sb->s_root->d_u.d_alias);
                spin_unlock(&sb->s_root->d_lock);
                spin_unlock(&sb->s_root->d_inode->i_lock);
        }

diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 4bb21d6..a3153e2 100644 (file)
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -63,14 +63,14 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode)
        spin_lock(&inode->i_lock);
        /* run all of the dentries associated with this inode.  Since this is a
         * directory, there damn well better only be one item on this list */
-       hlist_for_each_entry(alias, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(alias, &inode->i_dentry, d_u.d_alias) {
                struct dentry *child;
 
                /* run all of the children of the original inode and fix their
                 * d_flags to indicate parental interest (their parent is the
                 * original inode) */
                spin_lock(&alias->d_lock);
-               list_for_each_entry(child, &alias->d_subdirs, d_u.d_child) {
+               list_for_each_entry(child, &alias->d_subdirs, d_child) {
                        if (!child->d_inode)
                                continue;
 

diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index e2e05a1..92edcfc 100644 (file)
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -172,7 +172,7 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode,
        struct dentry *dentry;
 
        spin_lock(&inode->i_lock);
-       hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
+       hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {
                spin_lock(&dentry->d_lock);
                if (ocfs2_match_dentry(dentry, parent_blkno, skip_unhashed)) {
                        trace_ocfs2_find_local_alias(dentry->d_name.len,

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index cbde054..53c1b60 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -122,15 +122,15 @@ struct dentry {
        void *d_fsdata;                 /* fs-specific data */
 
        struct list_head d_lru;         /* LRU list */
+       struct list_head d_child;       /* child of parent list */
+       struct list_head d_subdirs;     /* our children */
        /*
-        * d_child and d_rcu can share memory
+        * d_alias and d_rcu can share memory
         */
        union {
-               struct list_head d_child;       /* child of parent list */
+               struct hlist_node d_alias;      /* inode alias list */
                struct rcu_head d_rcu;
        } d_u;
-       struct list_head d_subdirs;     /* our children */
-       struct hlist_node d_alias;      /* inode alias list */
 };
 
 /*

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 1c204fd..5d9d542 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1012,7 +1012,7 @@ static void cgroup_d_remove_dir(struct dentry *dentry)
        parent = dentry->d_parent;
        spin_lock(&parent->d_lock);
        spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
-       list_del_init(&dentry->d_u.d_child);
+       list_del_init(&dentry->d_child);
        spin_unlock(&dentry->d_lock);
        spin_unlock(&parent->d_lock);
        remove_dir(dentry);

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index dcdf4e6..691a8ea 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6063,7 +6063,7 @@ static int instance_mkdir (struct inode *inode, struct dentry *dentry, umode_t m
        int ret;
 
        /* Paranoid: Make sure the parent is the "instances" directory */
-       parent = hlist_entry(inode->i_dentry.first, struct dentry, d_alias);
+       parent = hlist_entry(inode->i_dentry.first, struct dentry, d_u.d_alias);
        if (WARN_ON_ONCE(parent != trace_instance_dir))
                return -ENOENT;
 
@@ -6090,7 +6090,7 @@ static int instance_rmdir(struct inode *inode, struct dentry *dentry)
        int ret;
 
        /* Paranoid: Make sure the parent is the "instances" directory */
-       parent = hlist_entry(inode->i_dentry.first, struct dentry, d_alias);
+       parent = hlist_entry(inode->i_dentry.first, struct dentry, d_u.d_alias);
        if (WARN_ON_ONCE(parent != trace_instance_dir))
                return -ENOENT;
 

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index bc1bd20..be15da8 100644 (file)
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -427,7 +427,7 @@ static void remove_event_file_dir(struct ftrace_event_file *file)
 
        if (dir) {
                spin_lock(&dir->d_lock);        /* probably unneeded */
-               list_for_each_entry(child, &dir->d_subdirs, d_u.d_child) {
+               list_for_each_entry(child, &dir->d_subdirs, d_child) {
                        if (child->d_inode)     /* probably unneeded */
                                child->d_inode->i_private = NULL;
                }

diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index ff42773..86f9694 100644 (file)
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1190,7 +1190,7 @@ static void sel_remove_entries(struct dentry *de)
        spin_lock(&de->d_lock);
        node = de->d_subdirs.next;
        while (node != &de->d_subdirs) {
-               struct dentry *d = list_entry(node, struct dentry, d_u.d_child);
+               struct dentry *d = list_entry(node, struct dentry, d_child);
 
                spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
                list_del_init(node);
@@ -1664,12 +1664,12 @@ static void sel_remove_classes(void)
 
        list_for_each(class_node, &class_dir->d_subdirs) {
                struct dentry *class_subdir = list_entry(class_node,
-                                       struct dentry, d_u.d_child);
+                                       struct dentry, d_child);
                struct list_head *class_subdir_node;
 
                list_for_each(class_subdir_node, &class_subdir->d_subdirs) {
                        struct dentry *d = list_entry(class_subdir_node,
-                                               struct dentry, d_u.d_child);
+                                               struct dentry, d_child);
 
                        if (d->d_inode)
                                if (d->d_inode->i_mode & S_IFDIR)