The patch titled
zoned vm counters: conversion of nr_unstable to per zone counter
has been added to the -mm tree. Its filename is
zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: zoned vm counters: conversion of nr_unstable to per zone counter
From: Christoph Lameter <clameter@xxxxxxx>
Conversion of nr_unstable to a per zone counter
We need to do some special modifications to the nfs code since there are
multiple cases of disposition and we need to have a page ref for proper
accounting.
This converts the last critical page state of the VM and therefore we need to
remove several functions that were depending on GET_PAGE_STATE_LAST in order
to make the kernel compile again. We are only left with event type counters
in page state.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/base/node.c | 4 ++--
fs/fs-writeback.c | 2 +-
fs/nfs/pagelist.c | 1 +
fs/nfs/write.c | 7 +++----
fs/proc/proc_misc.c | 4 ++--
include/linux/mmzone.h | 1 +
mm/page-writeback.c | 2 +-
mm/page_alloc.c | 4 +---
mm/vmstat.c | 3 +--
9 files changed, 13 insertions(+), 15 deletions(-)
diff -puN drivers/base/node.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter drivers/base/node.c
--- a/drivers/base/node.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/drivers/base/node.c
@@ -40,13 +40,11 @@ static ssize_t node_read_meminfo(struct
int n;
int nid = dev->id;
struct sysinfo i;
- struct page_state ps;
unsigned long inactive;
unsigned long active;
unsigned long free;
si_meminfo_node(&i, nid);
- get_page_state_node(&ps, nid);
__get_zone_counts(&active, &inactive, &free, NODE_DATA(nid));
@@ -66,6 +64,7 @@ static ssize_t node_read_meminfo(struct
"Node %d Mapped: %8lu kB\n"
"Node %d AnonPages: %8lu kB\n"
"Node %d PageTables: %8lu kB\n"
+ "Node %d NFS Unstable: %8lu kB\n"
"Node %d Slab: %8lu kB\n",
nid, K(i.totalram),
nid, K(i.freeram),
@@ -82,6 +81,7 @@ static ssize_t node_read_meminfo(struct
nid, K(node_page_state(nid, NR_FILE_MAPPED)),
nid, K(node_page_state(nid, NR_ANON_PAGES)),
nid, K(node_page_state(nid, NR_PAGETABLE)),
+ nid, K(node_page_state(nid, NR_UNSTABLE_NFS)),
nid, K(node_page_state(nid, NR_SLAB)));
n += hugetlb_report_node_meminfo(nid, buf + n);
return n;
diff -puN fs/fs-writeback.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter fs/fs-writeback.c
--- a/fs/fs-writeback.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/fs/fs-writeback.c
@@ -465,7 +465,7 @@ void sync_inodes_sb(struct super_block *
.range_end = LLONG_MAX,
};
unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
- unsigned long nr_unstable = read_page_state(nr_unstable);
+ unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
wbc.nr_to_write = nr_dirty + nr_unstable +
(inodes_stat.nr_inodes - inodes_stat.nr_unused) +
diff -puN fs/nfs/pagelist.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter fs/nfs/pagelist.c
--- a/fs/nfs/pagelist.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/fs/nfs/pagelist.c
@@ -154,6 +154,7 @@ void nfs_clear_request(struct nfs_page *
{
struct page *page = req->wb_page;
if (page != NULL) {
+ dec_zone_page_state(page, NR_UNSTABLE_NFS);
page_cache_release(page);
req->wb_page = NULL;
}
diff -puN fs/nfs/write.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter fs/nfs/write.c
--- a/fs/nfs/write.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/fs/nfs/write.c
@@ -525,7 +525,7 @@ 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_NFS);
mark_inode_dirty(inode);
}
#endif
@@ -1393,7 +1393,6 @@ static void nfs_commit_done(struct rpc_t
{
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);
@@ -1430,10 +1429,10 @@ static void nfs_commit_done(struct rpc_t
dprintk(" mismatch\n");
nfs_mark_request_dirty(req);
next:
+ if (req->wb_page)
+ dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
nfs_clear_page_writeback(req);
- res++;
}
- sub_page_state(nr_unstable,res);
}
static const struct rpc_call_ops nfs_commit_ops = {
diff -puN fs/proc/proc_misc.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter fs/proc/proc_misc.c
--- a/fs/proc/proc_misc.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/fs/proc/proc_misc.c
@@ -120,7 +120,6 @@ static int meminfo_read_proc(char *page,
{
struct sysinfo i;
int len;
- struct page_state ps;
unsigned long inactive;
unsigned long active;
unsigned long free;
@@ -129,7 +128,6 @@ static int meminfo_read_proc(char *page,
struct vmalloc_info vmi;
long cached;
- get_page_state(&ps);
get_zone_counts(&active, &inactive, &free);
/*
@@ -172,6 +170,7 @@ static int meminfo_read_proc(char *page,
"Mapped: %8lu kB\n"
"Slab: %8lu kB\n"
"PageTables: %8lu kB\n"
+ "NFS Unstable: %8lu kB\n"
"CommitLimit: %8lu kB\n"
"Committed_AS: %8lu kB\n"
"VmallocTotal: %8lu kB\n"
@@ -196,6 +195,7 @@ static int meminfo_read_proc(char *page,
K(global_page_state(NR_FILE_MAPPED)),
K(global_page_state(NR_SLAB)),
K(global_page_state(NR_PAGETABLE)),
+ K(global_page_state(NR_UNSTABLE_NFS)),
K(allowed),
K(committed),
(unsigned long)VMALLOC_TOTAL >> 10,
diff -puN include/linux/mmzone.h~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter include/linux/mmzone.h
--- a/include/linux/mmzone.h~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/include/linux/mmzone.h
@@ -55,6 +55,7 @@ enum zone_stat_item {
NR_PAGETABLE, /* used for pagetables */
NR_FILE_DIRTY,
NR_WRITEBACK,
+ NR_UNSTABLE_NFS, /* NFS unstable pages */
NR_VM_ZONE_STAT_ITEMS };
struct per_cpu_pages {
diff -puN mm/page_alloc.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter mm/page_alloc.c
--- a/mm/page_alloc.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/mm/page_alloc.c
@@ -1271,7 +1271,6 @@ void si_meminfo_node(struct sysinfo *val
*/
void show_free_areas(void)
{
- struct page_state ps;
int cpu, temperature;
unsigned long active;
unsigned long inactive;
@@ -1303,7 +1302,6 @@ void show_free_areas(void)
}
}
- get_page_state(&ps);
get_zone_counts(&active, &inactive, &free);
printk("Free pages: %11ukB (%ukB HighMem)\n",
@@ -1316,7 +1314,7 @@ void show_free_areas(void)
inactive,
global_page_state(NR_FILE_DIRTY),
global_page_state(NR_WRITEBACK),
- ps.nr_unstable,
+ global_page_state(NR_UNSTABLE_NFS),
nr_free_pages(),
global_page_state(NR_SLAB),
global_page_state(NR_FILE_MAPPED),
diff -puN mm/page-writeback.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter mm/page-writeback.c
--- a/mm/page-writeback.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/mm/page-writeback.c
@@ -111,7 +111,7 @@ struct writeback_state
static void get_writeback_state(struct writeback_state *wbs)
{
wbs->nr_dirty = global_page_state(NR_FILE_DIRTY);
- wbs->nr_unstable = read_page_state(nr_unstable);
+ wbs->nr_unstable = global_page_state(NR_UNSTABLE_NFS);
wbs->nr_mapped = global_page_state(NR_FILE_MAPPED) +
global_page_state(NR_ANON_PAGES);
wbs->nr_writeback = global_page_state(NR_WRITEBACK);
diff -puN mm/vmstat.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter mm/vmstat.c
--- a/mm/vmstat.c~zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter
+++ a/mm/vmstat.c
@@ -464,10 +464,9 @@ static char *vmstat_text[] = {
"nr_page_table_pages",
"nr_dirty",
"nr_writeback",
-
- /* Page state */
"nr_unstable",
+ /* Event counters */
"pgpgin",
"pgpgout",
"pswpin",
_
Patches currently in -mm which might be from clameter@xxxxxxx are
page-migration-make-do_swap_page-redo-the-fault.patch
slab-extract-cache_free_alien-from-__cache_free.patch
migration-remove-unnecessary-pageswapcache-checks.patch
page-migration-cleanup-rename-ignrefs-to-migration.patch
page-migration-cleanup-group-functions.patch
page-migration-cleanup-remove-useless-definitions.patch
page-migration-cleanup-drop-nr_refs-in-remove_references.patch
page-migration-cleanup-extract-try_to_unmap-from-migration-functions.patch
page-migration-cleanup-pass-mapping-to-migration-functions.patch
page-migration-cleanup-move-fallback-handling-into-special-function.patch
swapless-pm-add-r-w-migration-entries.patch
swapless-page-migration-rip-out-swap-based-logic.patch
swapless-page-migration-modify-core-logic.patch
more-page-migration-do-not-inc-dec-rss-counters.patch
more-page-migration-use-migration-entries-for-file-pages.patch
page-migration-update-documentation.patch
mm-remove-vm_locked-before-remap_pfn_range-and-drop-vm_shm.patch
page-migration-simplify-migrate_pages.patch
page-migration-handle-freeing-of-pages-in-migrate_pages.patch
page-migration-use-allocator-function-for-migrate_pages.patch
page-migration-support-moving-of-individual-pages.patch
page-migration-support-moving-of-individual-pages-x86_64-support.patch
page-migration-support-moving-of-individual-pages-x86-support.patch
page-migration-support-a-vma-migration-function.patch
allow-migration-of-mlocked-pages.patch
mm-remove-some-update_mmu_cache-calls.patch
zoned-vm-counters-create-vmstatc-h-from-page_allocc-h.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation-tidy.patch
zoned-vm-counters-convert-nr_mapped-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagecache-to-per-zone-counter.patch
zoned-vm-counters-remove-nr_file_mapped-from-scan-control-structure.patch
zoned-vm-counters-remove-nr_file_mapped-from-scan-control-structure-fix.patch
zoned-vm-counters-split-nr_anon_pages-off-from-nr_file_mapped.patch
zoned-vm-counters-zone_reclaim-remove-proc-sys-vm-zone_reclaim_interval.patch
zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagetables-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_dirty-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_writeback-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_bounce-to-per-zone-counter.patch
zoned-vm-counters-remove-useless-struct-wbs.patch
selinux-add-task_movememory-hook.patch
selinux-add-security_task_movememory-calls-to-mm-code.patch
cpuset-remove-extra-cpuset_zone_allowed-check-in-__alloc_pages.patch
corrections-to-memory-barrier-doc.patch
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