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authorLinus Torvalds <torvalds@linux-foundation.org>2009-02-05 16:12:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-02-05 16:12:38 -0800
commit082256333f4e879bc4b56e294921aaff6d035da0 (patch)
treeddc5ea679909d19b1c7279907c6ff762bc8ac598 /fs
parent09cd5b8f9dbdc161aec404eea572fbca7d162920 (diff)
parent436443f0f77f730f9f700095799c485356695c08 (diff)
downloadlinux-082256333f4e879bc4b56e294921aaff6d035da0.tar.gz
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: Revert "configfs: Silence lockdep on mkdir(), rmdir() and configfs_depend_item()"
Diffstat (limited to 'fs')
-rw-r--r--fs/configfs/dir.c59
1 files changed, 0 insertions, 59 deletions
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 9c235839114..8e93341f3e8 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);