Remove needfree, desfree, lotsfree #defines

This patch reverts 77ab5dd.  This is now possible because upstream has
refactored the ARC in such a way that these values are only used in a
few key places.  Those places have subsequently been updated to use
the Linux equivalent Linux functionality.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue zfsonlinux/zfs#3637

diff --git a/include/sys/vmsystm.h b/include/sys/vmsystm.h
index 3720d209a6d82eb1520a0bce919929e1ec216604..2fa169523ddfd0efa6a2768301bd707108681240 100644 (file)
--- a/include/sys/vmsystm.h
+++ b/include/sys/vmsystm.h
@@ -36,9 +36,6 @@
 #define        membar_producer()               smp_wmb()
 #define        physmem                         totalram_pages
 #define        freemem                         nr_free_pages()
-#define        needfree                        0
-#define        desfree                         0
-#define        lotsfree                        0
 
 #define        xcopyin(from, to, size)         copy_from_user(to, from, size)
 #define        xcopyout(from, to, size)        copy_to_user(to, from, size)