LU-4199 libcfs: add wrapper of PAGE_SIZE

PAGE_SIZE should not be used from userspace. It is not a
constant on all architectures and new kernels do not export
it to userspace anymore.

Signed-off-by: Li Xi <lixi@ddn.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: Ib66534c31c7134833bf4768d3cc8bbc067b1bab4
Reviewed-on: http://review.whamcloud.com/8877
Tested-by: Jenkins
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/libcfs/include/libcfs/libcfs.h b/libcfs/include/libcfs/libcfs.h
index 72c2cc6..8a5ac8a 100644 (file)
--- a/libcfs/include/libcfs/libcfs.h
+++ b/libcfs/include/libcfs/libcfs.h
@@ -177,7 +177,12 @@ void lc_watchdog_delete(struct lc_watchdog *lcw);
 /* Dump a debug log */
 void lc_watchdog_dumplog(pid_t pid, void *data);
 
 /* Dump a debug log */
 void lc_watchdog_dumplog(pid_t pid, void *data);
 

-#endif /* __KERNEL__ */
+#else /* !__KERNEL__ */
+#include <unistd.h>
+#ifndef PAGE_SIZE
+#define PAGE_SIZE sysconf(_SC_PAGESIZE)
+#endif
+#endif /* !__KERNEL__ */

 
 /* need both kernel and user-land acceptor */
 #define LNET_ACCEPTOR_MIN_RESERVED_PORT    512
 
 /* need both kernel and user-land acceptor */
 #define LNET_ACCEPTOR_MIN_RESERVED_PORT    512