diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page-writeback.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 9b3c4ee62abf..f1d201fdcf9c 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -979,14 +979,18 @@ int test_clear_page_writeback(struct page *page) int ret; if (mapping) { + struct backing_dev_info *bdi = mapping->backing_dev_info; unsigned long flags; write_lock_irqsave(&mapping->tree_lock, flags); ret = TestClearPageWriteback(page); - if (ret) + if (ret) { radix_tree_tag_clear(&mapping->page_tree, page_index(page), PAGECACHE_TAG_WRITEBACK); + if (bdi_cap_writeback_dirty(bdi)) + __dec_bdi_stat(bdi, BDI_WRITEBACK); + } write_unlock_irqrestore(&mapping->tree_lock, flags); } else { ret = TestClearPageWriteback(page); @@ -1002,14 +1006,18 @@ int test_set_page_writeback(struct page *page) int ret; if (mapping) { + struct backing_dev_info *bdi = mapping->backing_dev_info; unsigned long flags; write_lock_irqsave(&mapping->tree_lock, flags); ret = TestSetPageWriteback(page); - if (!ret) + if (!ret) { radix_tree_tag_set(&mapping->page_tree, page_index(page), PAGECACHE_TAG_WRITEBACK); + if (bdi_cap_writeback_dirty(bdi)) + __inc_bdi_stat(bdi, BDI_WRITEBACK); + } if (!PageDirty(page)) radix_tree_tag_clear(&mapping->page_tree, page_index(page), |