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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-07-18 03:42:25 +0200 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-07-23 03:02:15 +0200 |
| commit | 4e13e66bee2d792c1aae21797f16c181024834eb (patch) | |
| tree | 1fa51dade28bc025d9bda0e09dec1f202281a498 /fs/nilfs2/btree.c | |
| parent | nilfs2: add btree get block function with readahead option (diff) | |
| download | linux-4e13e66bee2d792c1aae21797f16c181024834eb.tar.xz linux-4e13e66bee2d792c1aae21797f16c181024834eb.zip | |
nilfs2: introduce check flag to btree node buffer
nilfs_btree_get_block() now may return untested buffer due to
read-ahead. This adds a new flag for buffer heads so that the btree
code can check whether the buffer is already verified or not.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/btree.c')
| -rw-r--r-- | fs/nilfs2/btree.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c index 1b5321c0bcac..d3faa0bba171 100644 --- a/fs/nilfs2/btree.c +++ b/fs/nilfs2/btree.c @@ -370,8 +370,16 @@ static int nilfs_btree_node_broken(const struct nilfs_btree_node *node, int nilfs_btree_broken_node_block(struct buffer_head *bh) { - return nilfs_btree_node_broken((struct nilfs_btree_node *)bh->b_data, + int ret; + + if (buffer_nilfs_checked(bh)) + return 0; + + ret = nilfs_btree_node_broken((struct nilfs_btree_node *)bh->b_data, bh->b_size, bh->b_blocknr); + if (likely(!ret)) + set_buffer_nilfs_checked(bh); + return ret; } static struct nilfs_btree_node * |