[PATCH] ZVC: Support NR_SLAB_RECLAIMABLE / NR_SLAB_UNRECLAIMABLE

Remove the atomic counter for slab_reclaim_pages and replace the counter
and NR_SLAB with two ZVC counter that account for unreclaimable and
reclaimable slab pages: NR_SLAB_RECLAIMABLE and NR_SLAB_UNRECLAIMABLE.

Change the check in vmscan.c to refer to to NR_SLAB_RECLAIMABLE.  The
intend seems to be to check for slab pages that could be freed.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/base/node.c b/drivers/base/node.c
index e09f5c2c11ee..001e6f6b9c1b 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -68,7 +68,9 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
                        "Node %d PageTables:   %8lu kB\n"
                        "Node %d NFS_Unstable: %8lu kB\n"
                        "Node %d Bounce:       %8lu kB\n"
-                       "Node %d Slab:         %8lu kB\n",
+                       "Node %d Slab:         %8lu kB\n"
+                       "Node %d SReclaimable: %8lu kB\n"
+                       "Node %d SUnreclaim:   %8lu kB\n",
                        nid, K(i.totalram),
                        nid, K(i.freeram),
                        nid, K(i.totalram - i.freeram),
@@ -88,7 +90,10 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
                        nid, K(node_page_state(nid, NR_PAGETABLE)),
                        nid, K(node_page_state(nid, NR_UNSTABLE_NFS)),
                        nid, K(node_page_state(nid, NR_BOUNCE)),
-                       nid, K(node_page_state(nid, NR_SLAB)));
+                       nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE) +
+                                node_page_state(nid, NR_SLAB_UNRECLAIMABLE)),
+                       nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE)),
+                       nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)));
         n += hugetlb_report_node_meminfo(nid, buf + n);
         return n;
 }