ANDROID: sdcardfs: Use d_invalidate instead of drop_recurisve

drop_recursive did not properly remove stale dentries.
Instead, we use the vfs's d_invalidate, which does the proper cleanup.

Additionally, remove the no longer used drop_recursive, and
fixup_top_recursive that that are no longer used.

Signed-off-by: Daniel Rosenberg <drosen@google.com>
Change-Id: Ibff61b0c34b725b024a050169047a415bc90f0d8

diff --git a/fs/sdcardfs/derived_perm.c b/fs/sdcardfs/derived_perm.c
index 69ffbf2..72ae4b9 100644 (file)
--- a/fs/sdcardfs/derived_perm.c
+++ b/fs/sdcardfs/derived_perm.c
@@ -308,46 +308,6 @@ void fixup_perms_recursive(struct dentry *dentry, struct limit_search *limit)
        __fixup_perms_recursive(dentry, limit, 0);
 }
 
-void drop_recursive(struct dentry *parent)
-{
-       struct dentry *dentry;
-       struct sdcardfs_inode_info *info;
-       if (!d_inode(parent))
-               return;
-       info = SDCARDFS_I(d_inode(parent));
-       spin_lock(&parent->d_lock);
-       list_for_each_entry(dentry, &parent->d_subdirs, d_child) {
-               if (d_inode(dentry)) {
-                       if (SDCARDFS_I(d_inode(parent))->top != SDCARDFS_I(d_inode(dentry))->top) {
-                               drop_recursive(dentry);
-                               d_drop(dentry);
-                       }
-               }
-       }
-       spin_unlock(&parent->d_lock);
-}
-
-void fixup_top_recursive(struct dentry *parent)
-{
-       struct dentry *dentry;
-       struct sdcardfs_inode_info *info;
-
-       if (!d_inode(parent))
-               return;
-       info = SDCARDFS_I(d_inode(parent));
-       spin_lock(&parent->d_lock);
-       list_for_each_entry(dentry, &parent->d_subdirs, d_child) {
-               if (d_inode(dentry)) {
-                       if (SDCARDFS_I(d_inode(parent))->top != SDCARDFS_I(d_inode(dentry))->top) {
-                               get_derived_permission(parent, dentry);
-                               fixup_tmp_permissions(d_inode(dentry));
-                               fixup_top_recursive(dentry);
-                       }
-               }
-       }
-       spin_unlock(&parent->d_lock);
-}
-
 /* main function for updating derived permission */
 inline void update_derived_permission_lock(struct dentry *dentry)
 {

diff --git a/fs/sdcardfs/inode.c b/fs/sdcardfs/inode.c
index 5d05449..9052ed4 100644 (file)
--- a/fs/sdcardfs/inode.c
+++ b/fs/sdcardfs/inode.c
@@ -533,7 +533,7 @@ static int sdcardfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        get_derived_permission_new(new_dentry->d_parent, old_dentry, &new_dentry->d_name);
        fixup_tmp_permissions(d_inode(old_dentry));
        fixup_lower_ownership(old_dentry, new_dentry->d_name.name);
-       drop_recursive(old_dentry); /* Can't fixup ownership recursively :( */
+       d_invalidate(old_dentry); /* Can't fixup ownership recursively :( */
 out:
        unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
        dput(lower_old_dir_dentry);

diff --git a/fs/sdcardfs/sdcardfs.h b/fs/sdcardfs/sdcardfs.h
index a42125e..09ec1e4 100644 (file)
--- a/fs/sdcardfs/sdcardfs.h
+++ b/fs/sdcardfs/sdcardfs.h
@@ -484,8 +484,6 @@ extern void setup_derived_state(struct inode *inode, perm_t perm, userid_t useri
                        uid_t uid, bool under_android, struct inode *top);
 extern void get_derived_permission(struct dentry *parent, struct dentry *dentry);
 extern void get_derived_permission_new(struct dentry *parent, struct dentry *dentry, const struct qstr *name);
-extern void drop_recursive(struct dentry *parent);
-extern void fixup_top_recursive(struct dentry *parent);
 extern void fixup_perms_recursive(struct dentry *dentry, struct limit_search *limit);
 
 extern void update_derived_permission_lock(struct dentry *dentry);