mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()

All users of pagevec_lookup() and pagevec_lookup_range() now pass
PAGEVEC_SIZE as a desired number of pages.  Just drop the argument.

Link: http://lkml.kernel.org/r/20171009151359.31984-15-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/btrfs/extent_io.c

@@ -3815,7 +3815,7 @@ retry:
 		tag_pages_for_writeback(mapping, index, end);
 	while (!done && !nr_to_write_done && (index <= end) &&
 	       (nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
-			tag, PAGEVEC_SIZE))) {
+			tag))) {
 		unsigned i;
 
 		scanned = 1;
@@ -3956,8 +3956,8 @@ retry:
 		tag_pages_for_writeback(mapping, index, end);
 	done_index = index;
 	while (!done && !nr_to_write_done && (index <= end) &&
-	       (nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
+			(nr_pages = pagevec_lookup_range_tag(&pvec, mapping,
-			tag, PAGEVEC_SIZE))) {
+						&index, end, tag))) {
 		unsigned i;
 
 		scanned = 1;

fs/ceph/addr.c

@@ -1162,8 +1162,7 @@ release_pvec_pages:
 			index = 0;
 			while ((index <= end) &&
 			       (nr = pagevec_lookup_tag(&pvec, mapping, &index,
-							PAGECACHE_TAG_WRITEBACK,
+						PAGECACHE_TAG_WRITEBACK))) {
-							PAGEVEC_SIZE))) {
 				for (i = 0; i < nr; i++) {
 					page = pvec.pages[i];
 					if (page_snap_context(page) != snapc)

fs/ext4/inode.c

@@ -2621,7 +2621,7 @@ static int mpage_prepare_extent_to_map(struct mpage_da_data *mpd)
 	mpd->next_page = index;
 	while (index <= end) {
 		nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
-				tag, PAGEVEC_SIZE);
+				tag);
 		if (nr_pages == 0)
 			goto out;
 

fs/f2fs/checkpoint.c

@@ -319,7 +319,7 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
 	blk_start_plug(&plug);
 
 	while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
-				PAGECACHE_TAG_DIRTY, PAGEVEC_SIZE))) {
+				PAGECACHE_TAG_DIRTY))) {
 		int i;
 
 		for (i = 0; i < nr_pages; i++) {

fs/f2fs/data.c

@@ -1670,7 +1670,7 @@ retry:
 		int i;
 
 		nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
-				tag, PAGEVEC_SIZE);
+				tag);
 		if (nr_pages == 0)
 			break;
 

fs/f2fs/node.c

@@ -1286,7 +1286,7 @@ static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
 	index = 0;
 
 	while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
-				PAGECACHE_TAG_DIRTY, PAGEVEC_SIZE))) {
+				PAGECACHE_TAG_DIRTY))) {
 		int i;
 
 		for (i = 0; i < nr_pages; i++) {
@@ -1440,7 +1440,7 @@ retry:
 	index = 0;
 
 	while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
-				PAGECACHE_TAG_DIRTY, PAGEVEC_SIZE))) {
+				PAGECACHE_TAG_DIRTY))) {
 		int i;
 
 		for (i = 0; i < nr_pages; i++) {
@@ -1553,7 +1553,7 @@ next_step:
 	index = 0;
 
 	while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
-				PAGECACHE_TAG_DIRTY, PAGEVEC_SIZE))) {
+				PAGECACHE_TAG_DIRTY))) {
 		int i;
 
 		for (i = 0; i < nr_pages; i++) {
@@ -1651,7 +1651,7 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
 	pagevec_init(&pvec, 0);
 
 	while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
-				PAGECACHE_TAG_WRITEBACK, PAGEVEC_SIZE))) {
+				PAGECACHE_TAG_WRITEBACK))) {
 		int i;
 
 		for (i = 0; i < nr_pages; i++) {

fs/gfs2/aops.c

@@ -398,7 +398,7 @@ retry:
 	done_index = index;
 	while (!done && (index <= end)) {
 		nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
-				tag, PAGEVEC_SIZE);
+				tag);
 		if (nr_pages == 0)
 			break;
 

fs/nilfs2/btree.c

@@ -2158,8 +2158,8 @@ static void nilfs_btree_lookup_dirty_buffers(struct nilfs_bmap *btree,
 
 	pagevec_init(&pvec, 0);
 
-	while (pagevec_lookup_tag(&pvec, btcache, &index, PAGECACHE_TAG_DIRTY,
+	while (pagevec_lookup_tag(&pvec, btcache, &index,
-				  PAGEVEC_SIZE)) {
+					PAGECACHE_TAG_DIRTY)) {
 		for (i = 0; i < pagevec_count(&pvec); i++) {
 			bh = head = page_buffers(pvec.pages[i]);
 			do {

fs/nilfs2/page.c

@@ -257,8 +257,7 @@ int nilfs_copy_dirty_pages(struct address_space *dmap,
 
 	pagevec_init(&pvec, 0);
 repeat:
-	if (!pagevec_lookup_tag(&pvec, smap, &index, PAGECACHE_TAG_DIRTY,
+	if (!pagevec_lookup_tag(&pvec, smap, &index, PAGECACHE_TAG_DIRTY))
-				PAGEVEC_SIZE))
 		return 0;
 
 	for (i = 0; i < pagevec_count(&pvec); i++) {
@@ -376,8 +375,8 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
 
 	pagevec_init(&pvec, 0);
 
-	while (pagevec_lookup_tag(&pvec, mapping, &index, PAGECACHE_TAG_DIRTY,
+	while (pagevec_lookup_tag(&pvec, mapping, &index,
-				  PAGEVEC_SIZE)) {
+					PAGECACHE_TAG_DIRTY)) {
 		for (i = 0; i < pagevec_count(&pvec); i++) {
 			struct page *page = pvec.pages[i];
 

fs/nilfs2/segment.c

@@ -712,7 +712,7 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode,
  repeat:
 	if (unlikely(index > last) ||
 	    !pagevec_lookup_range_tag(&pvec, mapping, &index, last,
-				PAGECACHE_TAG_DIRTY, PAGEVEC_SIZE))
+				PAGECACHE_TAG_DIRTY))
 		return ndirties;
 
 	for (i = 0; i < pagevec_count(&pvec); i++) {
@@ -755,8 +755,8 @@ static void nilfs_lookup_dirty_node_buffers(struct inode *inode,
 
 	pagevec_init(&pvec, 0);
 
-	while (pagevec_lookup_tag(&pvec, mapping, &index, PAGECACHE_TAG_DIRTY,
+	while (pagevec_lookup_tag(&pvec, mapping, &index,
-				  PAGEVEC_SIZE)) {
+					PAGECACHE_TAG_DIRTY)) {
 		for (i = 0; i < pagevec_count(&pvec); i++) {
 			bh = head = page_buffers(pvec.pages[i]);
 			do {

include/linux/pagevec.h

@@ -40,16 +40,14 @@ static inline unsigned pagevec_lookup(struct pagevec *pvec,
 
 unsigned pagevec_lookup_range_tag(struct pagevec *pvec,
 		struct address_space *mapping, pgoff_t *index, pgoff_t end,
-		int tag, unsigned nr_pages);
+		int tag);
 unsigned pagevec_lookup_range_nr_tag(struct pagevec *pvec,
 		struct address_space *mapping, pgoff_t *index, pgoff_t end,
 		int tag, unsigned max_pages);
 static inline unsigned pagevec_lookup_tag(struct pagevec *pvec,
-		struct address_space *mapping, pgoff_t *index, int tag,
+		struct address_space *mapping, pgoff_t *index, int tag)
-		unsigned nr_pages)
 {
-	return pagevec_lookup_range_tag(pvec, mapping, index, (pgoff_t)-1, tag,
+	return pagevec_lookup_range_tag(pvec, mapping, index, (pgoff_t)-1, tag);
-					nr_pages);
 }
 
 static inline void pagevec_init(struct pagevec *pvec, int cold)

mm/filemap.c

@@ -424,7 +424,7 @@ static void __filemap_fdatawait_range(struct address_space *mapping,
 		unsigned i;
 
 		nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
-				end, PAGECACHE_TAG_WRITEBACK, PAGEVEC_SIZE);
+				end, PAGECACHE_TAG_WRITEBACK);
 		if (!nr_pages)
 			break;
 

mm/page-writeback.c

@@ -2197,7 +2197,7 @@ retry:
 		int i;
 
 		nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
-				tag, PAGEVEC_SIZE);
+				tag);
 		if (nr_pages == 0)
 			break;
 

mm/swap.c

@@ -988,10 +988,10 @@ EXPORT_SYMBOL(pagevec_lookup_range);
 
 unsigned pagevec_lookup_range_tag(struct pagevec *pvec,
 		struct address_space *mapping, pgoff_t *index, pgoff_t end,
-		int tag, unsigned nr_pages)
+		int tag)
 {
 	pvec->nr = find_get_pages_range_tag(mapping, index, end, tag,
-					nr_pages, pvec->pages);
+					PAGEVEC_SIZE, pvec->pages);
 	return pagevec_count(pvec);
 }
 EXPORT_SYMBOL(pagevec_lookup_range_tag);