diff options
Diffstat (limited to 'mm/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index e2481949494c..8195eb454411 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2747,6 +2747,11 @@ int test_clear_page_writeback(struct page *page) __wb_writeout_inc(wb); } } + + if (mapping->host && !mapping_tagged(mapping, + PAGECACHE_TAG_WRITEBACK)) + sb_clear_inode_writeback(mapping->host); + spin_unlock_irqrestore(&mapping->tree_lock, flags); } else { ret = TestClearPageWriteback(page); @@ -2774,11 +2779,24 @@ int __test_set_page_writeback(struct page *page, bool keep_write) spin_lock_irqsave(&mapping->tree_lock, flags); ret = TestSetPageWriteback(page); if (!ret) { + bool on_wblist; + + on_wblist = mapping_tagged(mapping, + PAGECACHE_TAG_WRITEBACK); + radix_tree_tag_set(&mapping->page_tree, page_index(page), PAGECACHE_TAG_WRITEBACK); if (bdi_cap_account_writeback(bdi)) __inc_wb_stat(inode_to_wb(inode), WB_WRITEBACK); + + /* + * We can come through here when swapping anonymous + * pages, so we don't necessarily have an inode to track + * for sync. + */ + if (mapping->host && !on_wblist) + sb_mark_inode_writeback(mapping->host); } if (!PageDirty(page)) radix_tree_tag_clear(&mapping->page_tree, |