From: Junio C Hamano <gitster@pobox.com>
To: Michael Haggerty <mhagger@alum.mit.edu>
Cc: Jeff King <peff@peff.net>, Johan Herland <johan@herland.net>,
Ramsay Jones <ramsay@ramsay1.demon.co.uk>,
git@vger.kernel.org
Subject: Re: [PATCH v2 04/12] refs: implement simple transactions for the packed-refs file
Date: Thu, 20 Jun 2013 10:11:02 -0700 [thread overview]
Message-ID: <7vd2rgwvvd.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <51C2B41F.2050708@alum.mit.edu> (Michael Haggerty's message of "Thu, 20 Jun 2013 09:49:51 +0200")
Michael Haggerty <mhagger@alum.mit.edu> writes:
> But currently only the main packed ref cache can be locked, so it would
> be possible for lock_packed_refs() to use the static packlock instance
> for locking.
Perhaps I am missing something from the previous discussions, but I
am having trouble understanding the "main packed ref cache" part of
the above. "main" as opposed to...? Is it envisioned that later
somebody can lock one subpart while another can lock a different and
non-overlapping subpart, to make changes independently, and somehow
their non-overlapping changes will be consolidated into a single
consistent result?
next prev parent reply other threads:[~2013-06-20 17:11 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 7:51 [PATCH v2 00/12] Fix some reference-related races Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 01/12] repack_without_ref(): split list curation and entry writing Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 02/12] pack_refs(): split creation of packed refs " Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 03/12] refs: wrap the packed refs cache in a level of indirection Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 04/12] refs: implement simple transactions for the packed-refs file Michael Haggerty
2013-06-19 19:18 ` Junio C Hamano
2013-06-20 7:49 ` Michael Haggerty
2013-06-20 11:55 ` Jeff King
2013-06-20 18:03 ` Michael Haggerty
2013-06-20 19:55 ` Jeff King
2013-06-20 17:11 ` Junio C Hamano [this message]
2013-06-20 17:58 ` Michael Haggerty
2013-06-20 18:36 ` Junio C Hamano
2013-06-19 7:51 ` [PATCH v2 05/12] refs: manage lifetime of packed refs cache via reference counting Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 06/12] do_for_each_entry(): increment the packed refs cache refcount Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 07/12] packed_ref_cache: increment refcount when locked Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 08/12] Extract a struct stat_data from cache_entry Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 09/12] add a stat_validity struct Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 10/12] get_packed_ref_cache: reload packed-refs file when it changes Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 11/12] for_each_ref: load all loose refs before packed refs Michael Haggerty
2013-06-19 7:51 ` [PATCH v2 12/12] refs: do not invalidate the packed-refs cache unnecessarily Michael Haggerty
2013-06-19 18:56 ` [PATCH v2 00/12] Fix some reference-related races Jeff King
2013-06-20 9:09 ` Michael Haggerty
2013-06-20 11:52 ` Jeff King
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