Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 24 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 4656534b8..f735d28de 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -692,7 +692,6 @@ static int __bdi_set_min_ratio(struct backing_dev_info *bdi, unsigned int min_ra
 
 	if (min_ratio > 100 * BDI_RATIO_SCALE)
 		return -EINVAL;
-	min_ratio *= BDI_RATIO_SCALE;
 
 	spin_lock_bh(&bdi_lock);
 	if (min_ratio > bdi->max_ratio) {
@@ -729,7 +728,8 @@ static int __bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ra
 		ret = -EINVAL;
 	} else {
 		bdi->max_ratio = max_ratio;
-		bdi->max_prop_frac = (FPROP_FRAC_BASE * max_ratio) / 100;
+		bdi->max_prop_frac = (FPROP_FRAC_BASE * max_ratio) /
+						(100 * BDI_RATIO_SCALE);
 	}
 	spin_unlock_bh(&bdi_lock);
 
@@ -1638,7 +1638,7 @@ static inline void wb_dirty_limits(struct dirty_throttle_control *dtc)
 	 */
 	dtc->wb_thresh = __wb_calc_thresh(dtc);
 	dtc->wb_bg_thresh = dtc->thresh ?
-		div_u64((u64)dtc->wb_thresh * dtc->bg_thresh, dtc->thresh) : 0;
+		div64_u64(dtc->wb_thresh * dtc->bg_thresh, dtc->thresh) : 0;
 
 	/*
 	 * In order to avoid the stacked BDI deadlock we need
@@ -1921,7 +1921,7 @@ pause:
 			break;
 		}
 		__set_current_state(TASK_KILLABLE);
-		wb->dirty_sleep = now;
+		bdi->last_bdp_sleep = jiffies;
 		io_schedule_timeout(pause);
 
 		current->dirty_paused_when = now + pause;
@@ -2679,7 +2679,7 @@ void __folio_mark_dirty(struct folio *folio, struct address_space *mapping,
  * @folio: Folio to be marked as dirty.
  *
  * Filesystems which do not use buffer heads should call this function
- * from their set_page_dirty address space operation.  It ignores the
+ * from their dirty_folio address space operation.  It ignores the
  * contents of folio_get_private(), so if the filesystem marks individual
  * blocks as dirty, the filesystem should handle that itself.
  *
@@ -2953,19 +2953,16 @@ bool __folio_end_writeback(struct folio *folio)
 		unsigned long flags;
 
 		xa_lock_irqsave(&mapping->i_pages, flags);
-		ret = folio_test_clear_writeback(folio);
-		if (ret) {
-			__xa_clear_mark(&mapping->i_pages, folio_index(folio),
-						PAGECACHE_TAG_WRITEBACK);
-			if (bdi->capabilities & BDI_CAP_WRITEBACK_ACCT) {
-				struct bdi_writeback *wb = inode_to_wb(inode);
-
-				wb_stat_mod(wb, WB_WRITEBACK, -nr);
-				__wb_writeout_add(wb, nr);
-				if (!mapping_tagged(mapping,
-						    PAGECACHE_TAG_WRITEBACK))
-					wb_inode_writeback_end(wb);
-			}
+		ret = folio_xor_flags_has_waiters(folio, 1 << PG_writeback);
+		__xa_clear_mark(&mapping->i_pages, folio_index(folio),
+					PAGECACHE_TAG_WRITEBACK);
+		if (bdi->capabilities & BDI_CAP_WRITEBACK_ACCT) {
+			struct bdi_writeback *wb = inode_to_wb(inode);
+
+			wb_stat_mod(wb, WB_WRITEBACK, -nr);
+			__wb_writeout_add(wb, nr);
+			if (!mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
+				wb_inode_writeback_end(wb);
 		}
 
 		if (mapping->host && !mapping_tagged(mapping,
@@ -2974,14 +2971,14 @@ bool __folio_end_writeback(struct folio *folio)
 
 		xa_unlock_irqrestore(&mapping->i_pages, flags);
 	} else {
-		ret = folio_test_clear_writeback(folio);
-	}
-	if (ret) {
-		lruvec_stat_mod_folio(folio, NR_WRITEBACK, -nr);
-		zone_stat_mod_folio(folio, NR_ZONE_WRITE_PENDING, -nr);
-		node_stat_mod_folio(folio, NR_WRITTEN, nr);
+		ret = folio_xor_flags_has_waiters(folio, 1 << PG_writeback);
 	}
+
+	lruvec_stat_mod_folio(folio, NR_WRITEBACK, -nr);
+	zone_stat_mod_folio(folio, NR_ZONE_WRITE_PENDING, -nr);
+	node_stat_mod_folio(folio, NR_WRITTEN, nr);
 	folio_memcg_unlock(folio);
+
 	return ret;
 }