From 0d7d5d678bf9e07dffe22b018cf035d511d9e86e Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 1 Apr 2014 17:08:44 +0200 Subject: [PATCH] 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 Reviewed-by: Jan Kara --- fs/ext4/namei.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 7193cea805ff..87a8a6e613ba 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3084,6 +3084,10 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, 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 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, 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) -- 2.20.1