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Commit f99a8d7a authored by Minchan Kim's avatar Minchan Kim Committed by Vinayak Menon
Browse files

mm: make shrink_page_list with pages work from multiple zones 



Shrink_page_list expects all pages come from a same zone
but it's too limited to use.

This patch removes the dependency so next patch can use
shrink_page_list with pages from multiple zones.

Change-Id: I34469b7f0a79f2b79e30e40033ba8b3e1dd5f2d0
Signed-off-by: default avatarMinchan Kim <minchan@kernel.org>
Patch-mainline: linux-mm @ 9 May 2013 16:21:25
[vinmenon@codeaurora.org: changes for node based lrus]
Signed-off-by: default avatarVinayak Menon <vinmenon@codeaurora.org>
parent fde15c03

mm/vmscan.c

+6 −2
Original line number Diff line number Diff line
@@ -1152,6 +1152,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, 
			goto keep;



		VM_BUG_ON_PAGE(PageActive(page), page);

		if (pgdat)

			VM_BUG_ON_PAGE(page_pgdat(page) != pgdat, page);



		nr_pages = compound_nr(page);
@@ -1238,7 +1240,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, 
			/* Case 1 above */

			if (current_is_kswapd() &&

			    PageReclaim(page) &&

			    test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {

			    (pgdat &&

				test_bit(PGDAT_WRITEBACK, &pgdat->flags))) {

				stat->nr_immediate++;

				goto activate_locked;
@@ -1372,7 +1375,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, 
			 */

			if (page_is_file_cache(page) &&

			    (!current_is_kswapd() || !PageReclaim(page) ||

			     !test_bit(PGDAT_DIRTY, &pgdat->flags))) {

			     (pgdat &&

				!test_bit(PGDAT_DIRTY, &pgdat->flags)))) {

				/*

				 * Immediately reclaim when written back.

				 * Similar in principal to deactivate_page()