mailing list mirror (one of many)
 help / color / mirror / code / Atom feed
From: Junio C Hamano <>
To: Jeff King <>
Cc: John Cai <>, git <>,
	Christian Couder <>
Subject: Re: [PATCH 1/3] fsck: free tree buffers after walking unreachable objects
Date: Thu, 22 Sep 2022 12:27:33 -0700	[thread overview]
Message-ID: <xmqq5yhfyztm.fsf@gitster.g> (raw)
In-Reply-To: <> (Jeff King's message of "Thu, 22 Sep 2022 14:58:17 -0400")

Jeff King <> writes:

> I do think it is true that this is the final time we'd look at these
> objects. But I don't think it would be a disaster if somebody did. The
> free_tree_buffer() function clears the "parsed" flag on the struct. 

Ah, that is perfectly fine, then.  Thanks.

> As a side note, IMHO having tree->buffer at all is a mistake, because it
> leads to exactly this kind of confusion about when the buffer should be
> discarded. We'd be better off having all callers parse directly into a
> local buffer, and then clean up when they're done.

Yeah, tree-walk.c users woud use tree_desc structure anyway, and
instead of having a moving pointer that points into a separate thing
(i.e. tree->buffer), it could have its own copy of the "whole buffer"
that can be used to free when it is done iterating over entries.

> .... But that's obviously a much bigger change.



  reply	other threads:[~2022-09-22 19:28 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-20 19:27 [INVESTIGATION] why is fsck --connectivity-only so much more expensive than rev-list --objects --all? John Cai
2022-09-20 20:41 ` Jeff King
2022-09-22 10:09   ` [PATCH 0/3] reducing fsck memory usage Jeff King
2022-09-22 10:11     ` [PATCH 1/3] fsck: free tree buffers after walking unreachable objects Jeff King
2022-09-22 18:40       ` Junio C Hamano
2022-09-22 18:58         ` Jeff King
2022-09-22 19:27           ` Junio C Hamano [this message]
2022-09-22 22:16             ` Jeff King
2022-09-22 10:13     ` [PATCH 2/3] fsck: turn off save_commit_buffer Jeff King
2022-09-22 10:15     ` [PATCH 3/3] parse_object_buffer(): respect save_commit_buffer Jeff King

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

  List information:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=xmqq5yhfyztm.fsf@gitster.g \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).