From dfc83566b3f52b4b84db52312c01fcc3b8847059 Mon Sep 17 00:00:00 2001
From: Joshua Peek <josh@joshpeek.com>
Date: Wed, 6 Aug 2008 14:52:39 -0500
Subject: Make FileStore use atomic writes

---
 activesupport/lib/active_support/cache/file_store.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/activesupport/lib/active_support/cache/file_store.rb b/activesupport/lib/active_support/cache/file_store.rb
index 5b771b1da0..0bdca49388 100644
--- a/activesupport/lib/active_support/cache/file_store.rb
+++ b/activesupport/lib/active_support/cache/file_store.rb
@@ -15,7 +15,7 @@ module ActiveSupport
       def write(name, value, options = nil)
         super
         ensure_cache_path(File.dirname(real_file_path(name)))
-        File.open(real_file_path(name), "wb+") { |f| f.write(value) }
+        File.atomic_write(real_file_path(name)) { |f| f.write(value) }
       rescue => e
         RAILS_DEFAULT_LOGGER.error "Couldn't create cache directory: #{name} (#{e.message})" if RAILS_DEFAULT_LOGGER
       end
-- 
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