Since lumpy reclaim was removed in v3.5 scan_control is not used by
may_write_to_{queue|inode} and pageout() anymore, remove the unused
parameter.

Cc: Mel Gorman <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Yang Shi <[email protected]>
---
 mm/vmscan.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index e5d52d6..17489b8 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -774,7 +774,7 @@ static inline int is_page_cache_freeable(struct page *page)
        return page_count(page) - page_has_private(page) == 1 + page_cache_pins;
 }
 
-static int may_write_to_inode(struct inode *inode, struct scan_control *sc)
+static int may_write_to_inode(struct inode *inode)
 {
        if (current->flags & PF_SWAPWRITE)
                return 1;
@@ -822,8 +822,7 @@ static void handle_write_error(struct address_space 
*mapping,
  * pageout is called by shrink_page_list() for each dirty page.
  * Calls ->writepage().
  */
-static pageout_t pageout(struct page *page, struct address_space *mapping,
-                        struct scan_control *sc)
+static pageout_t pageout(struct page *page, struct address_space *mapping)
 {
        /*
         * If the page is dirty, only perform writeback if that write
@@ -859,7 +858,7 @@ static pageout_t pageout(struct page *page, struct 
address_space *mapping,
        }
        if (mapping->a_ops->writepage == NULL)
                return PAGE_ACTIVATE;
-       if (!may_write_to_inode(mapping->host, sc))
+       if (!may_write_to_inode(mapping->host))
                return PAGE_KEEP;
 
        if (clear_page_dirty_for_io(page)) {
@@ -1396,7 +1395,7 @@ static unsigned long shrink_page_list(struct list_head 
*page_list,
                         * starts and then write it out here.
                         */
                        try_to_unmap_flush_dirty();
-                       switch (pageout(page, mapping, sc)) {
+                       switch (pageout(page, mapping)) {
                        case PAGE_KEEP:
                                goto keep_locked;
                        case PAGE_ACTIVATE:
-- 
1.8.3.1

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