diff options
| -rw-r--r-- | fs/configfs/dir.c | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index 9c2358391147..8e93341f3e82 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -553,24 +553,12 @@ static void detach_groups(struct config_group *group) child = sd->s_dentry; - /* - * Note: we hide this from lockdep since we have no way - * to teach lockdep about recursive - * I_MUTEX_PARENT -> I_MUTEX_CHILD patterns along a path - * in an inode tree, which are valid as soon as - * I_MUTEX_PARENT -> I_MUTEX_CHILD is valid from a - * parent inode to one of its children. - */ - lockdep_off(); mutex_lock(&child->d_inode->i_mutex); - lockdep_on(); configfs_detach_group(sd->s_element); child->d_inode->i_flags |= S_DEAD; - lockdep_off(); mutex_unlock(&child->d_inode->i_mutex); - lockdep_on(); d_delete(child); dput(child); @@ -760,22 +748,11 @@ static int configfs_attach_item(struct config_item *parent_item, * We are going to remove an inode and its dentry but * the VFS may already have hit and used them. Thus, * we must lock them as rmdir() would. - * - * Note: we hide this from lockdep since we have no way - * to teach lockdep about recursive - * I_MUTEX_PARENT -> I_MUTEX_CHILD patterns along a path - * in an inode tree, which are valid as soon as - * I_MUTEX_PARENT -> I_MUTEX_CHILD is valid from a - * parent inode to one of its children. */ - lockdep_off(); mutex_lock(&dentry->d_inode->i_mutex); - lockdep_on(); configfs_remove_dir(item); dentry->d_inode->i_flags |= S_DEAD; - lockdep_off(); mutex_unlock(&dentry->d_inode->i_mutex); - lockdep_on(); d_delete(dentry); } } @@ -810,25 +787,14 @@ static int configfs_attach_group(struct config_item *parent_item, * * We must also lock the inode to remove it safely in case of * error, as rmdir() would. - * - * Note: we hide this from lockdep since we have no way - * to teach lockdep about recursive - * I_MUTEX_PARENT -> I_MUTEX_CHILD patterns along a path - * in an inode tree, which are valid as soon as - * I_MUTEX_PARENT -> I_MUTEX_CHILD is valid from a - * parent inode to one of its children. */ - lockdep_off(); mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD); - lockdep_on(); ret = populate_groups(to_config_group(item)); if (ret) { configfs_detach_item(item); dentry->d_inode->i_flags |= S_DEAD; } - lockdep_off(); mutex_unlock(&dentry->d_inode->i_mutex); - lockdep_on(); if (ret) d_delete(dentry); } @@ -990,17 +956,7 @@ static int configfs_depend_prep(struct dentry *origin, BUG_ON(!origin || !sd); /* Lock this guy on the way down */ - /* - * Note: we hide this from lockdep since we have no way - * to teach lockdep about recursive - * I_MUTEX_PARENT -> I_MUTEX_CHILD patterns along a path - * in an inode tree, which are valid as soon as - * I_MUTEX_PARENT -> I_MUTEX_CHILD is valid from a - * parent inode to one of its children. - */ - lockdep_off(); mutex_lock(&sd->s_dentry->d_inode->i_mutex); - lockdep_on(); if (sd->s_element == target) /* Boo-yah */ goto out; @@ -1014,9 +970,7 @@ static int configfs_depend_prep(struct dentry *origin, } /* We looped all our children and didn't find target */ - lockdep_off(); mutex_unlock(&sd->s_dentry->d_inode->i_mutex); - lockdep_on(); ret = -ENOENT; out: @@ -1036,16 +990,11 @@ static void configfs_depend_rollback(struct dentry *origin, struct dentry *dentry = item->ci_dentry; while (dentry != origin) { - /* See comments in configfs_depend_prep() */ - lockdep_off(); mutex_unlock(&dentry->d_inode->i_mutex); - lockdep_on(); dentry = dentry->d_parent; } - lockdep_off(); mutex_unlock(&origin->d_inode->i_mutex); - lockdep_on(); } int configfs_depend_item(struct configfs_subsystem *subsys, @@ -1380,16 +1329,8 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry) } /* Wait until the racing operation terminates */ - /* - * Note: we hide this from lockdep since we are locked - * with subclass I_MUTEX_NORMAL from vfs_rmdir() (why - * not I_MUTEX_CHILD?), and I_MUTEX_XATTR or - * I_MUTEX_QUOTA are not relevant for the locked inode. - */ - lockdep_off(); mutex_lock(wait_mutex); mutex_unlock(wait_mutex); - lockdep_on(); } } while (ret == -EAGAIN); |