linux-kernel - Re: [PATCH 1/4] lib/printbuf: New data structure for heap-allocated strings

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Date:   Tue, 19 Apr 2022 22:02:20 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Kent Overstreet <kent.overstreet@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, roman.gushchin@...ux.dev,
        hannes@...xchg.org
Subject: Re: [PATCH 1/4] lib/printbuf: New data structure for heap-allocated
 strings

On Tue, Apr 19, 2022 at 04:31:59PM -0400, Kent Overstreet wrote:
> This adds printbufs: simple heap-allocated strings meant for building up
> structured messages, for logging/procfs/sysfs and elsewhere. They've
> been heavily used in bcachefs for writing .to_text() functions/methods -
> pretty printers, which has in turn greatly improved the overall quality
> of error messages.

How does this use case differ from that of lib/seq_buf.c?