ext4: rename: move EMLINK check up
Move checking i_nlink from after ext4_get_first_dir_block() to before. The
check doesn't rely on the result of that function and the function only
fails on fs corruption, so the order shouldn't matter.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 7193cea..87a8a6e 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -3084,6 +3084,10 @@
retval = -ENOTEMPTY;
if (!empty_dir(new.inode))
goto end_rename;
+ } else {
+ retval = -EMLINK;
+ if (new.dir != old.dir && EXT4_DIR_LINK_MAX(new.dir))
+ goto end_rename;
}
retval = -EIO;
old.dir_bh = ext4_get_first_dir_block(handle, old.inode,
@@ -3093,10 +3097,6 @@
goto end_rename;
if (le32_to_cpu(old.parent_de->inode) != old.dir->i_ino)
goto end_rename;
- retval = -EMLINK;
- if (!new.inode && new.dir != old.dir &&
- EXT4_DIR_LINK_MAX(new.dir))
- goto end_rename;
BUFFER_TRACE(old.dir_bh, "get_write_access");
retval = ext4_journal_get_write_access(handle, old.dir_bh);
if (retval)
