| title: | PATCH 11 32 Unionfs cache coherency and fi |
|
From: Erez Zadok <ezk@xxxxxxxxxxxxx
Signed-off-by: Erez Zadok <ezk@xxxxxxxxxxxxx
Signed-off-by: Josef Jeff Sipek <jsipek@xxxxxxxxxxxxx
---
fs/unionfs/rename.c | 30 ++++++++++++++++++++++++++++--
1 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/fs/unionfs/rename.c b/fs/unionfs/rename.c
index 4de984e..f8ea37a 100644
--- a/fs/unionfs/rename.c
+++ b/fs/unionfs/rename.c
@@ -457,18 +457,44 @@ int unionfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
}
err = do_unionfs_rename(old_dir, old_dentry, new_dir, new_dentry);
-
out:
if (err)
/* clear the new_dentry stuff created */
d_drop(new_dentry);
- else
+ else {
/*
* force re-lookup since the dir on ro branch is not renamed,
* and lower dentries still indicate the un-renamed ones.
*/
if (S_ISDIR(old_dentry- d_inode- i_mode))
atomic_dec(&UNIONFS_D(old_dentry)- generation);
+ if (new_dentry- d_inode &&
+ !S_ISDIR(new_dentry- d_inode- i_mode)) {
+ if (!unionfs_lower_inode(new_dentry- d_inode)) {
+ /*
+ * If we get here, it means that no copyup
+ * was needed, and that a file by the old
+ * name already existing on the destination
+ * branch; that file got renamed earlier in
+ * this function, so all we need to do here
+ * is set the lower inode.
+ */
+ struct inode *inode;
+ inode = unionfs_lower_inode(
+ old_dentry- d_inode);
+ igrab(inode);
+ unionfs_set_lower_inode_idx(
+ new_dentry- d_inode,
+ dbstart(new_dentry), inode);
+ }
+
+ }
+ /* if all of this renaming succeeded, update our times */
+ unionfs_copy_attr_times(old_dir);
+ unionfs_copy_attr_times(new_dir);
+ unionfs_copy_attr_times(old_dentry- d_inode);
+ unionfs_copy_attr_times(new_dentry- d_inode);
+ }
unionfs_unlock_dentry(new_dentry);
unionfs_unlock_dentry(old_dentry);
--
1.5.2.2.238.g7cbf2f2
-
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