[f2fs-dev] [PATCH] f2fs: fix to enable readahead last NAT block

[Chao Yu]

We skip reading last one of NAT blocks when readahead them since max value of
valid block is calculated incorrectly. We should fix this problem to avoid it.

Signed-off-by: Chao Yu <chao2.yu@xxxxxxxxxxx>
---
 fs/f2fs/checkpoint.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 744c68b..75189b1 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -77,7 +77,7 @@ inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type)
 {
 	switch (type) {
 	case META_NAT:
-		return NM_I(sbi)->max_nid / NAT_ENTRY_PER_BLOCK;
+		return (NM_I(sbi)->max_nid + 3) / NAT_ENTRY_PER_BLOCK;
 	case META_SIT:
 		return SIT_BLK_CNT(sbi);
 	case META_SSA:
-- 
1.7.9.5


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