f2fs: call f2fs_handle_critical_error() to set cp_error flag

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@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: chaseyu

fs/f2fs/f2fs.h

@@ -5070,8 +5070,25 @@ 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;

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,
 };