From: Chao Yu <chao2.yu@samsung.com>
To: ??? <jaegeuk.kim@samsung.com>
Cc: linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [f2fs-dev] [PATCH] f2fs: fix to enable readahead last NAT block
Date: Thu, 17 Apr 2014 17:20:18 +0800
Message-id: <000101cf5a1e$5c051770$140f4650$@samsung.com>
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Sender: linux-kernel-owner@vger.kernel.org

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@samsung.com>
---
 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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