We don't guarantee cp_addr is fixed by cp_version.
This is to sync with f2fs-tools.

Cc: sta...@vger.kernel.org
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/checkpoint.c |  5 +++++
 fs/f2fs/f2fs.h       | 14 +++-----------
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 54cc6a9..bf2f44c 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -789,6 +789,11 @@ int get_valid_checkpoint(struct f2fs_sb_info *sbi)
                f2fs_put_page(cur_page, 1);
        }
 done:
+       if (cur_page == cp1)
+               sbi->cur_cp_pack = 1;
+       else
+               sbi->cur_cp_pack = 2;
+
        f2fs_put_page(cp1, 1);
        f2fs_put_page(cp2, 1);
        return 0;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 62383d2..e22e7e1 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -792,6 +792,7 @@ struct f2fs_sb_info {
 
        /* for checkpoint */
        struct f2fs_checkpoint *ckpt;           /* raw checkpoint pointer */
+       int cur_cp_pack;                        /* remain current cp pack */
        spinlock_t cp_lock;                     /* for flag in ckpt */
        struct inode *meta_inode;               /* cache meta blocks */
        struct mutex cp_mutex;                  /* checkpoint procedure lock */
@@ -1352,19 +1353,10 @@ static inline void *__bitmap_ptr(struct f2fs_sb_info 
*sbi, int flag)
 
 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
 {
-       block_t start_addr;
-       struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
-       unsigned long long ckpt_version = cur_cp_version(ckpt);
-
-       start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
+       block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
 
-       /*
-        * odd numbered checkpoint should at cp segment 0
-        * and even segment must be at cp segment 1
-        */
-       if (!(ckpt_version & 1))
+       if (sbi->cur_cp_pack == 2)
                start_addr += sbi->blocks_per_seg;
-
        return start_addr;
 }
 
-- 
2.8.3


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