[PATCH v2] f2fs: call f2fs_handle_critical_error() to set cp_error flag

[Chao Yu]

f2fs_handle_page_eio() is the only left place we set CP_ERROR_FLAG
directly, it missed to update superblock.s_stop_reason, let's
call f2fs_handle_critical_error() instead to fix that.

Introduce STOP_CP_REASON_READ_{META,NODE,DATA} stop_cp_reason enum
variable to indicate which kind of data we failed to read.

Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
---
v2:
- add missing 'return' to fix compile warning
 fs/f2fs/f2fs.h          | 21 +++++++++++++++++++--
 include/linux/f2fs_fs.h |  3 +++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 660bf88a376f..94cf1e78d892 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -5073,8 +5073,25 @@ static inline void f2fs_handle_page_eio(struct f2fs_sb_info *sbi,
 		return;
 
 	if (ofs == sbi->page_eio_ofs[type]) {
-		if (sbi->page_eio_cnt[type]++ == MAX_RETRY_PAGE_EIO)
-			set_ckpt_flags(sbi, CP_ERROR_FLAG);
+		if (sbi->page_eio_cnt[type]++ == MAX_RETRY_PAGE_EIO) {
+			enum stop_cp_reason stop_reason;
+
+			switch (type) {
+			case META:
+				stop_reason = STOP_CP_REASON_READ_META;
+				break;
+			case NODE:
+				stop_reason = STOP_CP_REASON_READ_NODE;
+				break;
+			case DATA:
+				stop_reason = STOP_CP_REASON_READ_DATA;
+				break;
+			default:
+				f2fs_bug_on(sbi, 1);
+				return;
+			}
+			f2fs_handle_critical_error(sbi, stop_reason);
+		}
 	} else {
 		sbi->page_eio_ofs[type] = ofs;
 		sbi->page_eio_cnt[type] = 0;
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index dc41722fcc9d..829a59399dac 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -80,6 +80,9 @@ enum stop_cp_reason {
 	STOP_CP_REASON_NO_SEGMENT,
 	STOP_CP_REASON_CORRUPTED_FREE_BITMAP,
 	STOP_CP_REASON_CORRUPTED_NID,
+	STOP_CP_REASON_READ_META,
+	STOP_CP_REASON_READ_NODE,
+	STOP_CP_REASON_READ_DATA,
 	STOP_CP_REASON_MAX,
 };
 
-- 
2.40.1