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f2fs: fix the calculation of max_nids

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Total nids that f2fs can use should not include 0, nid for node inode, and nid
for meta inode.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim
2014-02-17 12:44:20 +09:00
parent 942e0be621
commit b63da15e8b
1 changed files with 3 additions and 1 deletions
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4
fs/f2fs/node.c
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@ -1811,7 +1811,9 @@ static int init_node_manager(struct f2fs_sb_info *sbi)
/* segment_count_nat includes pair segment so divide to 2. */ /* segment_count_nat includes pair segment so divide to 2. */
nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1;
nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks;
/* not used nids: 0, node, meta, (and root counted as valid node) */
nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks - 3;
nm_i->fcnt = 0; nm_i->fcnt = 0;
nm_i->nat_cnt = 0; nm_i->nat_cnt = 0;