From eb1353cfa9c1e9415b03dc117f8399969fa02102 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Fri, 19 Jun 2020 17:14:19 +0800 Subject: [PATCH] f2fs: fix to check page dirty status before writeback In f2fs_write_raw_pages(), we need to check page dirty status before writeback, because there could be a racer (e.g. reclaimer) helps writebacking the dirty page. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/compress.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index cde6868..dcc9f80 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -1322,6 +1322,12 @@ retry_write: congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); lock_page(cc->rpages[i]); + + if (!PageDirty(cc->rpages[i])) { + unlock_page(cc->rpages[i]); + continue; + } + clear_page_dirty_for_io(cc->rpages[i]); goto retry_write; } -- 2.7.4