linux-ext4 - Re: [RFC 1/3] jbd2: Drop useless return value of submit

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Date:   Tue, 21 Jun 2022 02:39:41 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Ritesh Harjani <ritesh.list@...il.com>
Cc:     linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Jan Kara <jack@...e.com>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [RFC 1/3] jbd2: Drop useless return value of submit_bh

On Mon, Jun 20, 2022 at 11:28:40AM +0530, Ritesh Harjani wrote:
> @@ -1636,14 +1636,12 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
>  		sb->s_checksum = jbd2_superblock_csum(journal, sb);
>  	get_bh(bh);
>  	bh->b_end_io = end_buffer_write_sync;
> -	ret = submit_bh(REQ_OP_WRITE, write_flags, bh);
> +	submit_bh(REQ_OP_WRITE, write_flags, bh);
>  	wait_on_buffer(bh);
>  	if (buffer_write_io_error(bh)) {
>  		clear_buffer_write_io_error(bh);
>  		set_buffer_uptodate(bh);
>  		ret = -EIO;
> -	}
> -	if (ret) {
>  		printk(KERN_ERR "JBD2: Error %d detected when updating "
>  		       "journal superblock for %s.\n", ret,
>  		       journal->j_devname);

Maybe rephrase the error message?  And join it together to match the
current preferred style.

		printk(KERN_ERR "JBD2: I/O error when updating journal superblock for %s.\n",
				journal->j_devname);