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SubjectZoned counters V1 [12/14]: Convert nr_bounce
Per zone unstable pages

Signed-off-by: Christoph Lameter <clameter@sgi.com>

Index: linux-2.6.15-rc5-mm3/fs/fs-writeback.c
===================================================================
--- linux-2.6.15-rc5-mm3.orig/fs/fs-writeback.c 2005-12-20 12:58:54.000000000 -0800
+++ linux-2.6.15-rc5-mm3/fs/fs-writeback.c 2005-12-20 12:59:17.000000000 -0800
@@ -471,7 +471,7 @@ void sync_inodes_sb(struct super_block *
.sync_mode = wait ? WB_SYNC_ALL : WB_SYNC_HOLD,
};
unsigned long nr_dirty = global_page_state(NR_DIRTY);
- unsigned long nr_unstable = read_page_state(nr_unstable);
+ unsigned long nr_unstable = global_page_state(NR_UNSTABLE);

wbc.nr_to_write = nr_dirty + nr_unstable +
(inodes_stat.nr_inodes - inodes_stat.nr_unused) +
Index: linux-2.6.15-rc5-mm3/mm/page_alloc.c
===================================================================
--- linux-2.6.15-rc5-mm3.orig/mm/page_alloc.c 2005-12-20 12:59:09.000000000 -0800
+++ linux-2.6.15-rc5-mm3/mm/page_alloc.c 2005-12-20 12:59:40.000000000 -0800
@@ -598,7 +598,8 @@ static int rmqueue_bulk(struct zone *zon
}

char *stat_item_descr[NR_STAT_ITEMS] = {
- "mapped","pagecache", "slab", "pagetable", "dirty", "writeback"
+ "mapped","pagecache", "slab", "pagetable", "dirty", "writeback",
+ "unstable"
};

/*
@@ -1784,7 +1785,7 @@ void show_free_areas(void)
inactive,
global_page_state(NR_DIRTY),
global_page_state(NR_WRITEBACK),
- ps.nr_unstable,
+ global_page_state(NR_UNSTABLE),
nr_free_pages(),
global_page_state(NR_SLAB),
global_page_state(NR_MAPPED),
@@ -2683,10 +2684,9 @@ static char *vmstat_text[] = {
"nr_page_table_pages",
"nr_dirty",
"nr_writeback",
-
- /* Page state */
"nr_unstable",

+ /* Page state */
"pgpgin",
"pgpgout",
"pswpin",
Index: linux-2.6.15-rc5-mm3/fs/nfs/write.c
===================================================================
--- linux-2.6.15-rc5-mm3.orig/fs/nfs/write.c 2005-12-20 12:58:54.000000000 -0800
+++ linux-2.6.15-rc5-mm3/fs/nfs/write.c 2005-12-20 12:59:17.000000000 -0800
@@ -489,7 +489,7 @@ nfs_mark_request_commit(struct nfs_page
nfs_list_add_request(req, &nfsi->commit);
nfsi->ncommit++;
spin_unlock(&nfsi->req_lock);
- inc_page_state(nr_unstable);
+ inc_zone_page_state(req->wb_page, NR_UNSTABLE);
mark_inode_dirty(inode);
}
#endif
@@ -1287,7 +1287,6 @@ void nfs_commit_done(struct rpc_task *ta
{
struct nfs_write_data *data = calldata;
struct nfs_page *req;
- int res = 0;

dprintk("NFS: %4d nfs_commit_done (status %d)\n",
task->tk_pid, task->tk_status);
@@ -1321,9 +1320,8 @@ void nfs_commit_done(struct rpc_task *ta
nfs_mark_request_dirty(req);
next:
nfs_clear_page_writeback(req);
- res++;
+ dec_zone_page_state(req->wb_page, NR_UNSTABLE);
}
- sub_page_state(nr_unstable,res);
}
#endif

Index: linux-2.6.15-rc5-mm3/include/linux/page-flags.h
===================================================================
--- linux-2.6.15-rc5-mm3.orig/include/linux/page-flags.h 2005-12-20 12:59:09.000000000 -0800
+++ linux-2.6.15-rc5-mm3/include/linux/page-flags.h 2005-12-20 12:59:17.000000000 -0800
@@ -91,8 +91,7 @@
* In this case, the field should be commented here.
*/
struct page_state {
- unsigned long nr_unstable; /* NFS unstable pages */
-#define GET_PAGE_STATE_LAST nr_unstable
+#define GET_PAGE_STATE_LAST xxx

/*
* The below are zeroed by get_page_state(). Use get_full_page_state()
Index: linux-2.6.15-rc5-mm3/mm/page-writeback.c
===================================================================
--- linux-2.6.15-rc5-mm3.orig/mm/page-writeback.c 2005-12-20 12:59:09.000000000 -0800
+++ linux-2.6.15-rc5-mm3/mm/page-writeback.c 2005-12-20 12:59:17.000000000 -0800
@@ -110,7 +110,7 @@ struct writeback_state
static void get_writeback_state(struct writeback_state *wbs)
{
wbs->nr_dirty = global_page_state(NR_DIRTY);
- wbs->nr_unstable = read_page_state(nr_unstable);
+ wbs->nr_unstable = global_page_state(NR_UNSTABLE);
wbs->nr_mapped = global_page_state(NR_MAPPED);
wbs->nr_writeback = global_page_state(NR_WRITEBACK);
}
Index: linux-2.6.15-rc5-mm3/include/linux/mmzone.h
===================================================================
--- linux-2.6.15-rc5-mm3.orig/include/linux/mmzone.h 2005-12-20 12:59:09.000000000 -0800
+++ linux-2.6.15-rc5-mm3/include/linux/mmzone.h 2005-12-20 12:59:17.000000000 -0800
@@ -52,6 +52,7 @@ enum zone_stat_item {
NR_PAGETABLE, /* used for pagetables */
NR_DIRTY,
NR_WRITEBACK,
+ NR_UNSTABLE, /* NFS unstable pages */
NR_STAT_ITEMS };

#ifdef CONFIG_SMP
Index: linux-2.6.15-rc5-mm3/drivers/base/node.c
===================================================================
--- linux-2.6.15-rc5-mm3.orig/drivers/base/node.c 2005-12-20 12:59:09.000000000 -0800
+++ linux-2.6.15-rc5-mm3/drivers/base/node.c 2005-12-20 12:59:17.000000000 -0800
@@ -65,6 +65,7 @@ static ssize_t node_read_meminfo(struct
"Node %d LowFree: %8lu kB\n"
"Node %d Dirty: %8lu kB\n"
"Node %d Writeback: %8lu kB\n"
+ "Node %d Unstable: %8lu kB\n"
"Node %d Mapped: %8lu kB\n"
"Node %d Pagecache: %8lu kB\n"
"Node %d Slab: %8lu kB\n",
@@ -79,6 +80,7 @@ static ssize_t node_read_meminfo(struct
nid, K(i.freeram - i.freehigh),
nid, K(nr[NR_DIRTY]),
nid, K(nr[NR_WRITEBACK]),
+ nid, K(nr[NR_UNSTABLE]),
nid, K(nr[NR_MAPPED]),
nid, K(nr[NR_PAGECACHE]),
nid, K(nr[NR_SLAB]));
-
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