Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 22 insertions, 27 deletions

diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 7b027720d820..85c098a499f3 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -139,7 +139,8 @@ static int file_removed(struct dentry *dentry, const char *file)
 static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
                                    struct nameidata *nd)
 {
-        struct dentry *proc_dentry, *new, *parent;
+        struct dentry *proc_dentry, *parent;
+        struct qstr *name = &dentry->d_name;
         struct inode *inode;
         int err, deleted;
 
@@ -149,23 +150,9 @@ static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
         else if (deleted)
                 return ERR_PTR(-ENOENT);
 
-        err = -ENOMEM;
         parent = HPPFS_I(ino)->proc_dentry;
         mutex_lock(&parent->d_inode->i_mutex);
-        proc_dentry = d_lookup(parent, &dentry->d_name);
-        if (proc_dentry == NULL) {
-                proc_dentry = d_alloc(parent, &dentry->d_name);
-                if (proc_dentry == NULL) {
-                        mutex_unlock(&parent->d_inode->i_mutex);
-                        goto out;
-                }
-                new = (*parent->d_inode->i_op->lookup)(parent->d_inode,
-                                                       proc_dentry, NULL);
-                if (new) {
-                        dput(proc_dentry);
-                        proc_dentry = new;
-                }
-        }
+        proc_dentry = lookup_one_len(name->name, parent, name->len);
         mutex_unlock(&parent->d_inode->i_mutex);
 
         if (IS_ERR(proc_dentry))
@@ -174,13 +161,11 @@ static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
         err = -ENOMEM;
         inode = get_inode(ino->i_sb, proc_dentry);
         if (!inode)
-                goto out_dput;
+                goto out;
 
         d_add(dentry, inode);
         return NULL;
 
- out_dput:
-        dput(proc_dentry);
  out:
         return ERR_PTR(err);
 }
@@ -598,6 +583,7 @@ static const struct file_operations hppfs_dir_fops = {
         .readdir        = hppfs_readdir,
         .open           = hppfs_dir_open,
         .fsync          = hppfs_fsync,
+        .llseek         = default_llseek,
 };
 
 static int hppfs_statfs(struct dentry *dentry, struct kstatfs *sf)
@@ -631,11 +617,18 @@ void hppfs_evict_inode(struct inode *ino)
         mntput(ino->i_sb->s_fs_info);
 }
 
-static void hppfs_destroy_inode(struct inode *inode)
+static void hppfs_i_callback(struct rcu_head *head)
 {
+        struct inode *inode = container_of(head, struct inode, i_rcu);
+        INIT_LIST_HEAD(&inode->i_dentry);
         kfree(HPPFS_I(inode));
 }
 
+static void hppfs_destroy_inode(struct inode *inode)
+{
+        call_rcu(&inode->i_rcu, hppfs_i_callback);
+}
+
 static const struct super_operations hppfs_sbops = {
         .alloc_inode    = hppfs_alloc_inode,
         .destroy_inode  = hppfs_destroy_inode,
@@ -682,8 +675,10 @@ static struct inode *get_inode(struct super_block *sb, struct dentry *dentry)
         struct inode *proc_ino = dentry->d_inode;
         struct inode *inode = new_inode(sb);
 
-        if (!inode)
+        if (!inode) {
+                dput(dentry);
                 return ERR_PTR(-ENOMEM);
+        }
 
         if (S_ISDIR(dentry->d_inode->i_mode)) {
                 inode->i_op = &hppfs_dir_iops;
@@ -696,7 +691,7 @@ static struct inode *get_inode(struct super_block *sb, struct dentry *dentry)
                 inode->i_fop = &hppfs_file_fops;
         }
 
-        HPPFS_I(inode)->proc_dentry = dget(dentry);
+        HPPFS_I(inode)->proc_dentry = dentry;
 
         inode->i_uid = proc_ino->i_uid;
         inode->i_gid = proc_ino->i_gid;
@@ -729,7 +724,7 @@ static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
         sb->s_fs_info = proc_mnt;
 
         err = -ENOMEM;
-        root_inode = get_inode(sb, proc_mnt->mnt_sb->s_root);
+        root_inode = get_inode(sb, dget(proc_mnt->mnt_sb->s_root));
         if (!root_inode)
                 goto out_mntput;
 
@@ -747,17 +742,17 @@ static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
         return(err);
 }
 
-static int hppfs_read_super(struct file_system_type *type,
+static struct dentry *hppfs_read_super(struct file_system_type *type,
                             int flags, const char *dev_name,
-                            void *data, struct vfsmount *mnt)
+                            void *data)
 {
-        return get_sb_nodev(type, flags, data, hppfs_fill_super, mnt);
+        return mount_nodev(type, flags, data, hppfs_fill_super);
 }
 
 static struct file_system_type hppfs_type = {
         .owner          = THIS_MODULE,
         .name           = "hppfs",
-        .get_sb         = hppfs_read_super,
+        .mount          = hppfs_read_super,
         .kill_sb        = kill_anon_super,
         .fs_flags       = 0,
 };