Merge branch 'work.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull sysv updates from Al Viro:
 "Fabio's 'switch to kmap_local_page()' patchset (originally after the
  ext2 counterpart, with a lot of cleaning up done to it; as the matter
  of fact, ext2 side is in need of similar cleanups - calling
  conventions there are bloody awful).

  Plus the equivalents of minix stuff..."

* 'work.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  sysv: fix handling of delete_entry and set_link failures
  fs/sysv: Replace kmap() with kmap_local_page()
  fs/sysv: Use dir_put_page() in sysv_rename()
  fs/sysv: Change the signature of dir_get_page()
  fs/sysv: Use the offset_in_page() helper
  sysv: don't flush page immediately for DIRSYNC directories

1 files changed, 22 insertions, 20 deletions

diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index ecd424461511..a25862773d82 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -153,19 +153,18 @@ static int sysv_unlink(struct inode * dir, struct dentry * dentry)
 	struct inode * inode = d_inode(dentry);
 	struct page * page;
 	struct sysv_dir_entry * de;
-	int err = -ENOENT;
+	int err;
 
 	de = sysv_find_entry(dentry, &page);
 	if (!de)
-		goto out;
+		return -ENOENT;
 
-	err = sysv_delete_entry (de, page);
-	if (err)
-		goto out;
-
-	inode->i_ctime = dir->i_ctime;
-	inode_dec_link_count(inode);
-out:
+	err = sysv_delete_entry(de, page);
+	if (!err) {
+		inode->i_ctime = dir->i_ctime;
+		inode_dec_link_count(inode);
+	}
+	dir_put_page(page, de);
 	return err;
 }
 
@@ -227,7 +226,10 @@ static int sysv_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		new_de = sysv_find_entry(new_dentry, &new_page);
 		if (!new_de)
 			goto out_dir;
-		sysv_set_link(new_de, new_page, old_inode);
+		err = sysv_set_link(new_de, new_page, old_inode);
+		dir_put_page(new_page, new_de);
+		if (err)
+			goto out_dir;
 		new_inode->i_ctime = current_time(new_inode);
 		if (dir_de)
 			drop_nlink(new_inode);
@@ -240,23 +242,23 @@ static int sysv_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 			inode_inc_link_count(new_dir);
 	}
 
-	sysv_delete_entry(old_de, old_page);
+	err = sysv_delete_entry(old_de, old_page);
+	if (err)
+		goto out_dir;
+
 	mark_inode_dirty(old_inode);
 
 	if (dir_de) {
-		sysv_set_link(dir_de, dir_page, new_dir);
-		inode_dec_link_count(old_dir);
+		err = sysv_set_link(dir_de, dir_page, new_dir);
+		if (!err)
+			inode_dec_link_count(old_dir);
 	}
-	return 0;
 
 out_dir:
-	if (dir_de) {
-		kunmap(dir_page);
-		put_page(dir_page);
-	}
+	if (dir_de)
+		dir_put_page(dir_page, dir_de);
 out_old:
-	kunmap(old_page);
-	put_page(old_page);
+	dir_put_page(old_page, old_de);
 out:
 	return err;
 }