1 files changed, 26 insertions, 12 deletions

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index bf1286588f26..e61de4f7b99d 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -368,6 +368,15 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
         return &ci->vfs_inode;
 }
 
+static void ceph_i_callback(struct rcu_head *head)
+{
+        struct inode *inode = container_of(head, struct inode, i_rcu);
+        struct ceph_inode_info *ci = ceph_inode(inode);
+
+        INIT_LIST_HEAD(&inode->i_dentry);
+        kmem_cache_free(ceph_inode_cachep, ci);
+}
+
 void ceph_destroy_inode(struct inode *inode)
 {
         struct ceph_inode_info *ci = ceph_inode(inode);
@@ -407,7 +416,7 @@ void ceph_destroy_inode(struct inode *inode)
         if (ci->i_xattrs.prealloc_blob)
                 ceph_buffer_put(ci->i_xattrs.prealloc_blob);
 
-        kmem_cache_free(ceph_inode_cachep, ci);
+        call_rcu(&inode->i_rcu, ceph_i_callback);
 }
 
 
@@ -841,13 +850,13 @@ static void ceph_set_dentry_offset(struct dentry *dn)
         di->offset = ceph_inode(inode)->i_max_offset++;
         spin_unlock(&inode->i_lock);
 
-        spin_lock(&dcache_lock);
-        spin_lock(&dn->d_lock);
+        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);
         dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset,
              dn->d_u.d_child.prev, dn->d_u.d_child.next);
         spin_unlock(&dn->d_lock);
-        spin_unlock(&dcache_lock);
+        spin_unlock(&dir->d_lock);
 }
 
 /*
@@ -879,8 +888,8 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
         } else if (realdn) {
                 dout("dn %p (%d) spliced with %p (%d) "
                      "inode %p ino %llx.%llx\n",
-                     dn, atomic_read(&dn->d_count),
-                     realdn, atomic_read(&realdn->d_count),
+                     dn, dn->d_count,
+                     realdn, realdn->d_count,
                      realdn->d_inode, ceph_vinop(realdn->d_inode));
                 dput(dn);
                 dn = realdn;
@@ -1231,11 +1240,11 @@ retry_lookup:
                         goto retry_lookup;
                 } else {
                         /* reorder parent's d_subdirs */
-                        spin_lock(&dcache_lock);
-                        spin_lock(&dn->d_lock);
+                        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);
                         spin_unlock(&dn->d_lock);
-                        spin_unlock(&dcache_lock);
+                        spin_unlock(&parent->d_lock);
                 }
 
                 di = dn->d_fsdata;
@@ -1772,12 +1781,17 @@ int ceph_do_getattr(struct inode *inode, int mask)
  * Check inode permissions.  We verify we have a valid value for
  * the AUTH cap, then call the generic handler.
  */
-int ceph_permission(struct inode *inode, int mask)
+int ceph_permission(struct inode *inode, int mask, unsigned int flags)
 {
-        int err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED);
+        int err;
+
+        if (flags & IPERM_FLAG_RCU)
+                return -ECHILD;
+
+        err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED);
 
         if (!err)
-                err = generic_permission(inode, mask, NULL);
+                err = generic_permission(inode, mask, flags, NULL);
         return err;
 }