From bbe86236d2f8c0a82af42da23399890f2bd25e23 Mon Sep 17 00:00:00 2001
From: Ryan Lortie <desrt@desrt.ca>
Date: Mon, 5 Nov 2012 08:39:46 -0500
Subject: Add a comment for the previous commit

Provide a link to the bug with a justification for the unusual code.
---
 shm/dconf-shm.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'shm')

diff --git a/shm/dconf-shm.c b/shm/dconf-shm.c
index e47e377..d291305 100644
--- a/shm/dconf-shm.c
+++ b/shm/dconf-shm.c
@@ -133,6 +133,9 @@ dconf_shm_flag (const gchar *name)
            * don't sync up their filesystem cache with mmap()ed regions.
            *
            * Using mmap() works everywhere.
+           *
+           * See https://bugzilla.gnome.org/show_bug.cgi?id=687334 about
+           * why we need to have PROT_READ even though we only write.
            */
           shm = mmap (NULL, 1, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
           g_assert (shm != MAP_FAILED);
-- 
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