Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:

 - a few misc bits

 - ocfs2 updates

 - almost all of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (131 commits)
  memory hotplug: fix comments when adding section
  mm: make alloc_node_mem_map a void call if we don't have CONFIG_FLAT_NODE_MEM_MAP
  mm: simplify nodemask printing
  mm,oom_reaper: remove pointless kthread_run() error check
  mm/page_ext.c: check if page_ext is not prepared
  writeback: remove unused function parameter
  mm: do not rely on preempt_count in print_vma_addr
  mm, sparse: do not swamp log with huge vmemmap allocation failures
  mm/hmm: remove redundant variable align_end
  mm/list_lru.c: mark expected switch fall-through
  mm/shmem.c: mark expected switch fall-through
  mm/page_alloc.c: broken deferred calculation
  mm: don't warn about allocations which stall for too long
  fs: fuse: account fuse_inode slab memory as reclaimable
  mm, page_alloc: fix potential false positive in __zone_watermark_ok
  mm: mlock: remove lru_add_drain_all()
  mm, sysctl: make NUMA stats configurable
  shmem: convert shmem_init_inodecache() to void
  Unify migrate_pages and move_pages access checks
  mm, pagevec: rename pagevec drained field
  ...

3 files changed, 16 insertions, 21 deletions

diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 06ffa135dfa6..16a7a67a11c9 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -2156,10 +2156,10 @@ static void nilfs_btree_lookup_dirty_buffers(struct nilfs_bmap *btree,
 	     level++)
 		INIT_LIST_HEAD(&lists[level]);
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 
-	while (pagevec_lookup_tag(&pvec, btcache, &index, PAGECACHE_TAG_DIRTY,
-				  PAGEVEC_SIZE)) {
+	while (pagevec_lookup_tag(&pvec, btcache, &index,
+					PAGECACHE_TAG_DIRTY)) {
 		for (i = 0; i < pagevec_count(&pvec); i++) {
 			bh = head = page_buffers(pvec.pages[i]);
 			do {
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 8616c46d33da..68241512d7c1 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -255,10 +255,9 @@ int nilfs_copy_dirty_pages(struct address_space *dmap,
 	pgoff_t index = 0;
 	int err = 0;
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 repeat:
-	if (!pagevec_lookup_tag(&pvec, smap, &index, PAGECACHE_TAG_DIRTY,
-				PAGEVEC_SIZE))
+	if (!pagevec_lookup_tag(&pvec, smap, &index, PAGECACHE_TAG_DIRTY))
 		return 0;
 
 	for (i = 0; i < pagevec_count(&pvec); i++) {
@@ -310,7 +309,7 @@ void nilfs_copy_back_pages(struct address_space *dmap,
 	pgoff_t index = 0;
 	int err;
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 repeat:
 	n = pagevec_lookup(&pvec, smap, &index);
 	if (!n)
@@ -374,10 +373,10 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
 	unsigned int i;
 	pgoff_t index = 0;
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 
-	while (pagevec_lookup_tag(&pvec, mapping, &index, PAGECACHE_TAG_DIRTY,
-				  PAGEVEC_SIZE)) {
+	while (pagevec_lookup_tag(&pvec, mapping, &index,
+					PAGECACHE_TAG_DIRTY)) {
 		for (i = 0; i < pagevec_count(&pvec); i++) {
 			struct page *page = pvec.pages[i];
 
@@ -519,7 +518,7 @@ unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
 	index = start_blk >> (PAGE_SHIFT - inode->i_blkbits);
 	nblocks_in_page = 1U << (PAGE_SHIFT - inode->i_blkbits);
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 
 repeat:
 	pvec.nr = find_get_pages_contig(inode->i_mapping, index, PAGEVEC_SIZE,
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 70ded52dc1dd..f65392fecb5c 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -708,21 +708,17 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode,
 		index = start >> PAGE_SHIFT;
 		last = end >> PAGE_SHIFT;
 	}
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
  repeat:
 	if (unlikely(index > last) ||
-	    !pagevec_lookup_tag(&pvec, mapping, &index, PAGECACHE_TAG_DIRTY,
-				min_t(pgoff_t, last - index,
-				      PAGEVEC_SIZE - 1) + 1))
+	    !pagevec_lookup_range_tag(&pvec, mapping, &index, last,
+				PAGECACHE_TAG_DIRTY))
 		return ndirties;
 
 	for (i = 0; i < pagevec_count(&pvec); i++) {
 		struct buffer_head *bh, *head;
 		struct page *page = pvec.pages[i];
 
-		if (unlikely(page->index > last))
-			break;
-
 		lock_page(page);
 		if (!page_has_buffers(page))
 			create_empty_buffers(page, i_blocksize(inode), 0);
@@ -757,10 +753,10 @@ static void nilfs_lookup_dirty_node_buffers(struct inode *inode,
 	unsigned int i;
 	pgoff_t index = 0;
 
-	pagevec_init(&pvec, 0);
+	pagevec_init(&pvec);
 
-	while (pagevec_lookup_tag(&pvec, mapping, &index, PAGECACHE_TAG_DIRTY,
-				  PAGEVEC_SIZE)) {
+	while (pagevec_lookup_tag(&pvec, mapping, &index,
+					PAGECACHE_TAG_DIRTY)) {
 		for (i = 0; i < pagevec_count(&pvec); i++) {
 			bh = head = page_buffers(pvec.pages[i]);
 			do {