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+Wed May  4 10:01:27 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* thread.c (rb_wait_for_single_fd): new. poll(2) based backend for rb_wait_for_single_fd().
+	  Now only Linux uses it.
+
+	The patch was written by Eric Wong. [Ruby 1.9 - Feature #4531]
+
 Wed May  4 09:56:57 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* thread.c (rb_wait_for_single_fd): new.