[PATCH 11/16] UML - add a comment explaining pread availability

[Jeff Dike]

Prompted by Dave Mielke: This adds a comment explaining why we do not
define _XOPEN_SOURCE, even though the pread man page says you should.

Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxx>

Index: linux-2.6.11/arch/um/drivers/cow_user.c
===================================================================
--- linux-2.6.11.orig/arch/um/drivers/cow_user.c	2005-03-05 12:07:31.000000000 -0500
+++ linux-2.6.11/arch/um/drivers/cow_user.c	2005-03-05 12:19:11.000000000 -0500
@@ -1,6 +1,9 @@
 #include <stddef.h>
 #include <string.h>
 #include <errno.h>
+/* _XOPEN_SOURCE is needed for pread, but we define _GNU_SOURCE, which defines
+ * that.
+ */
 #include <unistd.h>
 #include <byteswap.h>
 #include <sys/time.h>

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