[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, 6 insertions, 1 deletions

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index caa0a51560a0..5bbd60896050 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -170,6 +170,8 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
                 "AnonPages:    %8lu kB\n"
                 "Mapped:       %8lu kB\n"
                 "Slab:         %8lu kB\n"
+                "SReclaimable: %8lu kB\n"
+                "SUnreclaim:   %8lu kB\n"
                 "PageTables:   %8lu kB\n"
                 "NFS_Unstable: %8lu kB\n"
                 "Bounce:       %8lu kB\n"
@@ -197,7 +199,10 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
                 K(global_page_state(NR_WRITEBACK)),
                 K(global_page_state(NR_ANON_PAGES)),
                 K(global_page_state(NR_FILE_MAPPED)),
-                K(global_page_state(NR_SLAB)),
+                K(global_page_state(NR_SLAB_RECLAIMABLE) +
+                                global_page_state(NR_SLAB_UNRECLAIMABLE)),
+                K(global_page_state(NR_SLAB_RECLAIMABLE)),
+                K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
                 K(global_page_state(NR_PAGETABLE)),
                 K(global_page_state(NR_UNSTABLE_NFS)),
                 K(global_page_state(NR_BOUNCE)),