f2fs: split UMOUNT and FASTBOOT flags

This patch adds FASTBOOT flag into checkpoint as follows.

 - CP_UMOUNT_FLAG is set when system is umounted.
 - CP_FASTBOOT_FLAG is set when intermediate checkpoint having node summaries
   was done.

So, if you get CP_UMOUNT_FLAG from checkpoint, the system was umounted cleanly.
Instead, if there was sudden-power-off, you can get CP_FASTBOOT_FLAG or nothing.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index e993b0bc9abf..09805720f4bf 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -87,6 +87,7 @@ struct f2fs_super_block {
 /*
  * For checkpoint
  */
+#define CP_FASTBOOT_FLAG        0x00000020
 #define CP_FSCK_FLAG            0x00000010
 #define CP_ERROR_FLAG           0x00000008
 #define CP_COMPACT_SUM_FLAG     0x00000004
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 5e1c0292250c..69629826c2ba 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -72,6 +72,7 @@
 #define show_cpreason(type)                                             \
         __print_symbolic(type,                                          \
                 { CP_UMOUNT,    "Umount" },                             \
+                { CP_FASTBOOT,  "Fastboot" },                           \
                 { CP_SYNC,      "Sync" },                               \
                 { CP_DISCARD,   "Discard" })