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-rw-r--r--mm/page-writeback.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index d55cfcae2ef1..3d3848fa6324 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -558,7 +558,6 @@ static void background_writeout(unsigned long _min_pages)
558 global_page_state(NR_UNSTABLE_NFS) < background_thresh 558 global_page_state(NR_UNSTABLE_NFS) < background_thresh
559 && min_pages <= 0) 559 && min_pages <= 0)
560 break; 560 break;
561 wbc.more_io = 0;
562 wbc.encountered_congestion = 0; 561 wbc.encountered_congestion = 0;
563 wbc.nr_to_write = MAX_WRITEBACK_PAGES; 562 wbc.nr_to_write = MAX_WRITEBACK_PAGES;
564 wbc.pages_skipped = 0; 563 wbc.pages_skipped = 0;
@@ -566,9 +565,8 @@ static void background_writeout(unsigned long _min_pages)
566 min_pages -= MAX_WRITEBACK_PAGES - wbc.nr_to_write; 565 min_pages -= MAX_WRITEBACK_PAGES - wbc.nr_to_write;
567 if (wbc.nr_to_write > 0 || wbc.pages_skipped > 0) { 566 if (wbc.nr_to_write > 0 || wbc.pages_skipped > 0) {
568 /* Wrote less than expected */ 567 /* Wrote less than expected */
569 if (wbc.encountered_congestion || wbc.more_io) 568 congestion_wait(WRITE, HZ/10);
570 congestion_wait(WRITE, HZ/10); 569 if (!wbc.encountered_congestion)
571 else
572 break; 570 break;
573 } 571 }
574 } 572 }
@@ -633,12 +631,11 @@ static void wb_kupdate(unsigned long arg)
633 global_page_state(NR_UNSTABLE_NFS) + 631 global_page_state(NR_UNSTABLE_NFS) +
634 (inodes_stat.nr_inodes - inodes_stat.nr_unused); 632 (inodes_stat.nr_inodes - inodes_stat.nr_unused);
635 while (nr_to_write > 0) { 633 while (nr_to_write > 0) {
636 wbc.more_io = 0;
637 wbc.encountered_congestion = 0; 634 wbc.encountered_congestion = 0;
638 wbc.nr_to_write = MAX_WRITEBACK_PAGES; 635 wbc.nr_to_write = MAX_WRITEBACK_PAGES;
639 writeback_inodes(&wbc); 636 writeback_inodes(&wbc);
640 if (wbc.nr_to_write > 0) { 637 if (wbc.nr_to_write > 0) {
641 if (wbc.encountered_congestion || wbc.more_io) 638 if (wbc.encountered_congestion)
642 congestion_wait(WRITE, HZ/10); 639 congestion_wait(WRITE, HZ/10);
643 else 640 else
644 break; /* All the old data is written */ 641 break; /* All the old data is written */