From: Johannes Sixt <j6t@kdbg.org>
To: David Turner <dturner@twopensource.com>
Cc: git@vger.kernel.org, pclouds@gmail.com, aevarb@gmail.com,
jeffhost@microsoft.com
Subject: Re: [PATCH v3 03/16] index-helper: new daemon for caching index and related stuff
Date: Thu, 7 Apr 2016 08:21:13 +0200 [thread overview]
Message-ID: <5705FC59.2050801@kdbg.org> (raw)
In-Reply-To: <1459980722-4836-4-git-send-email-dturner@twopensource.com>
Am 07.04.2016 um 00:11 schrieb David Turner:
> +static void share_index(struct index_state *istate, struct shm *is)
> +{
> + void *new_mmap;
> + if (istate->mmap_size <= 20 ||
> + hashcmp(istate->sha1,
> + (unsigned char *)istate->mmap + istate->mmap_size - 20) ||
> + !hashcmp(istate->sha1, is->sha1) ||
> + git_shm_map(O_CREAT | O_EXCL | O_RDWR, 0700, istate->mmap_size,
> + &new_mmap, PROT_READ | PROT_WRITE, MAP_SHARED,
> + "git-index-%s", sha1_to_hex(istate->sha1)) < 0)
Builds which have NO_MMAP set require that MAP_PRIVATE is set. So I
would guess that at this point you leave those builds behind. Unless we
declare such systems as hopelessly outdated and remove NO_MMAP and
compat/mmap.c or you support index-helper only when NO_MMAP is not set.
-- Hannes
next prev parent reply other threads:[~2016-04-07 6:21 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-06 22:11 [PATCH v3 00/16] index-helper, watchman David Turner
2016-04-06 22:11 ` [PATCH v3 01/16] read-cache.c: fix constness of verify_hdr() David Turner
2016-04-06 22:11 ` [PATCH v3 02/16] read-cache: allow to keep mmap'd memory after reading David Turner
2016-04-06 22:11 ` [PATCH v3 03/16] index-helper: new daemon for caching index and related stuff David Turner
2016-04-07 6:21 ` Johannes Sixt [this message]
2016-04-07 14:14 ` Johannes Schindelin
2016-04-07 18:47 ` David Turner
2016-04-08 14:17 ` Johannes Schindelin
2016-04-08 11:26 ` Duy Nguyen
2016-04-08 22:16 ` David Turner
2016-04-11 23:27 ` David Turner
2016-04-12 9:40 ` Duy Nguyen
2016-04-12 17:28 ` David Turner
2016-04-12 18:05 ` Junio C Hamano
2016-04-13 0:32 ` David Turner
2016-04-14 10:43 ` Duy Nguyen
2016-04-14 18:12 ` Junio C Hamano
2016-04-14 18:20 ` David Turner
2016-04-15 0:16 ` Duy Nguyen
2016-04-15 1:31 ` Junio C Hamano
2016-04-06 22:11 ` [PATCH v3 04/16] index-helper: add --strict David Turner
2016-04-06 22:11 ` [PATCH v3 05/16] daemonize(): set a flag before exiting the main process David Turner
2016-04-06 22:11 ` [PATCH v3 06/16] index-helper: add --detach David Turner
2016-04-06 22:11 ` [PATCH v3 07/16] read-cache: add watchman 'WAMA' extension David Turner
2016-04-06 22:11 ` [PATCH v3 08/16] Add watchman support to reduce index refresh cost David Turner
2016-04-06 22:11 ` [PATCH v3 09/16] index-helper: use watchman to avoid refreshing index with lstat() David Turner
2016-04-07 22:47 ` Junio C Hamano
2016-04-07 22:52 ` Junio C Hamano
2016-04-08 0:14 ` David Turner
2016-04-08 6:03 ` Junio C Hamano
2016-04-06 22:11 ` [PATCH v3 10/16] update-index: enable/disable watchman support David Turner
2016-04-06 22:11 ` [PATCH v3 11/16] unpack-trees: preserve index extensions David Turner
2016-04-06 22:11 ` [PATCH v3 12/16] index-helper: kill mode David Turner
2016-04-06 22:11 ` [PATCH v3 13/16] index-helper: don't run if already running David Turner
2016-04-06 22:12 ` [PATCH v3 14/16] index-helper: autorun mode David Turner
2016-04-06 22:12 ` [PATCH v3 15/16] index-helper: optionally automatically run David Turner
2016-04-06 22:12 ` [PATCH v3 16/16] read-cache: config for waiting for index-helper David Turner
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