From: Jeff King <peff@peff.net>
To: Jonathan Tan <jonathantanmy@google.com>
Cc: git@vger.kernel.org, mh@glandium.org
Subject: Re: [PATCH 3/6] index-pack: remove redundant child field
Date: Thu, 17 Oct 2019 02:26:41 -0400 [thread overview]
Message-ID: <20191017062640.GD10862@sigill.intra.peff.net> (raw)
In-Reply-To: <39740c6e58bd6cb6ea33e5abb4ab8542ff6eb7b7.1570663470.git.jonathantanmy@google.com>
On Wed, Oct 09, 2019 at 04:44:19PM -0700, Jonathan Tan wrote:
> -static void prune_base_data(struct base_data *retain)
> +static void prune_base_data(struct base_data *youngest_child)
> {
> struct base_data *b;
> struct thread_local *data = get_thread_data();
> - for (b = data->base_cache;
> - data->base_cache_used > delta_base_cache_limit && b;
> - b = b->child) {
> - if (b->data && b != retain)
> - free_base_data(b);
> + struct base_data **ancestry = NULL;
> + int nr = 0, alloc = 0;
Minor, but please use size_t for allocation variables.
> + int i;
Technically this probably ought to be a size_t as well, but I'm much
more concerned about the allocation ones, where we might accidentally
overflow and underallocate a buffer. Overflowing "i" would probably just
lead to an error or bad result.
I _think_ what the patch is actually doing makes sense (taking as an
assumption that it's heading in a useful direction for the end of the
series).
-Peff
next prev parent reply other threads:[~2019-10-17 6:26 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-09 23:44 [RFC PATCH 0/6] Better threaded delta resolution in index-pack Jonathan Tan
2019-10-09 23:44 ` [PATCH 1/6] index-pack: unify threaded and unthreaded code Jonathan Tan
2019-10-17 6:20 ` Jeff King
2019-10-09 23:44 ` [PATCH 2/6] index-pack: remove redundant parameter Jonathan Tan
2019-10-17 6:21 ` Jeff King
2019-10-09 23:44 ` [PATCH 3/6] index-pack: remove redundant child field Jonathan Tan
2019-10-10 14:45 ` Derrick Stolee
2019-10-10 19:02 ` Jonathan Tan
2019-10-17 6:24 ` Jeff King
2019-10-17 6:26 ` Jeff King [this message]
2019-10-09 23:44 ` [PATCH 4/6] index-pack: calculate {ref,ofs}_{first,last} early Jonathan Tan
2019-10-17 6:30 ` Jeff King
2019-10-09 23:44 ` [PATCH 5/6] index-pack: make resolve_delta() assume base data Jonathan Tan
2019-10-17 6:32 ` Jeff King
2019-10-09 23:44 ` [PATCH 6/6] index-pack: make quantum of work smaller Jonathan Tan
2019-10-17 6:35 ` Jeff King
2019-10-17 20:17 ` [PATCH v2 0/7] Better threaded delta resolution in index-pack Jonathan Tan
2019-10-17 20:17 ` [PATCH v2 1/7] Documentation: deltaBaseCacheLimit is per-thread Jonathan Tan
2019-10-17 20:17 ` [PATCH v2 2/7] index-pack: unify threaded and unthreaded code Jonathan Tan
2019-10-17 20:17 ` [PATCH v2 3/7] index-pack: remove redundant parameter Jonathan Tan
2020-02-28 0:04 ` Josh Steadmon
2020-03-10 21:29 ` Jonathan Tan
2019-10-17 20:17 ` [PATCH v2 4/7] index-pack: remove redundant child field Jonathan Tan
2020-02-28 0:04 ` Josh Steadmon
2019-10-17 20:17 ` [PATCH v2 5/7] index-pack: calculate {ref,ofs}_{first,last} early Jonathan Tan
2019-10-17 20:17 ` [PATCH v2 6/7] index-pack: make resolve_delta() assume base data Jonathan Tan
2019-10-17 20:17 ` [PATCH v2 7/7] index-pack: make quantum of work smaller Jonathan Tan
2020-02-28 0:04 ` Josh Steadmon
2020-03-10 21:42 ` Jonathan Tan
2020-02-28 0:03 ` [PATCH v2 0/7] Better threaded delta resolution in index-pack Josh Steadmon
2020-03-10 21:45 ` Jonathan Tan
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