mm: kill page_queue_congested()

page_queue_congested() was introduced in 2002, but it was never used Signed-off-by: KOSAKI Motohiro <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
yshchan · Jan 6, 2009 · 084f71a · 084f71a
1 parent 9f572e3
commit 084f71a
Showing 1 changed file with 0 additions and 20 deletions.
diff --git a/mm/swapfile.c b/mm/swapfile.c
@@ -1372,26 +1372,6 @@ static int setup_swap_extents(struct swap_info_struct *sis, sector_t *span)
 	return ret;
 }
 
-#if 0	/* We don't need this yet */
-#include <linux/backing-dev.h>
-int page_queue_congested(struct page *page)
-{
-	struct backing_dev_info *bdi;
-
-	VM_BUG_ON(!PageLocked(page));	/* It pins the swap_info_struct */
-
-	if (PageSwapCache(page)) {
-		swp_entry_t entry = { .val = page_private(page) };
-		struct swap_info_struct *sis;
-
-		sis = get_swap_info_struct(swp_type(entry));
-		bdi = sis->bdev->bd_inode->i_mapping->backing_dev_info;
-	} else
-		bdi = page->mapping->backing_dev_info;
-	return bdi_write_congested(bdi);
-}
-#endif
-
 asmlinkage long sys_swapoff(const char __user * specialfile)
 {
 	struct swap_info_struct * p = NULL;