From e7a4feb0ab320eac466e39b283f52c1ec595bc03 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 8 May 2018 14:06:03 +0800 Subject: [PATCH] f2fs: fix to let checkpoint guarantee atomic page persistence 1. thread A: commit_inmem_pages submit data into block layer, but haven't waited it writeback. 2. thread A: commit_inmem_pages update related node. 3. thread B: do checkpoint, flush all nodes to disk. 4. SPOR Then, atomic file becomes corrupted since nodes is flushed before data. This patch fixes to treat atomic page as checkpoint guaranteed one, then in checkpoint, we can make sure all atomic page can be writebacked with metadata of atomic file. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 72287fa2489c..01135cc3a292 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -48,6 +48,8 @@ static bool __is_cp_guaranteed(struct page *page) if (inode->i_ino == F2FS_META_INO(sbi) || inode->i_ino == F2FS_NODE_INO(sbi) || S_ISDIR(inode->i_mode) || + (S_ISREG(inode->i_mode) && + is_inode_flag_set(inode, FI_ATOMIC_FILE)) || is_cold_data(page)) return true; return false; -- 2.30.2