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nilfs2: Combine nilfs_btree_alloc_path() and nilfs_btree_init_path()

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nilfs_btree_alloc_path() and nilfs_btree_init_path() are bound into each other
tightly. Make them into one procedure to clearify the logic and avoid some
misusages.

Signed-off-by: Li Hong <lihong.hi@gmail.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Li Hong 2010-04-02 17:36:34 +08:00 committed by Ryusuke Konishi
parent 0d9cc2332d
commit f905440f5e
1 changed files with 17 additions and 22 deletions
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39
fs/nilfs2/btree.c
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@ -71,23 +71,16 @@ void nilfs_btree_path_cache_destroy(void)
kmem_cache_destroy(nilfs_btree_path_cache);
}
static inline struct nilfs_btree_path *nilfs_btree_alloc_path(void)
static struct nilfs_btree_path *nilfs_btree_alloc_path(void)
{
return kmem_cache_alloc(nilfs_btree_path_cache, GFP_NOFS);
}
struct nilfs_btree_path *path;
int level = NILFS_BTREE_LEVEL_DATA;
static inline void nilfs_btree_free_path(struct nilfs_btree_path *path)
{
kmem_cache_free(nilfs_btree_path_cache, path);
}
path = kmem_cache_alloc(nilfs_btree_path_cache, GFP_NOFS);
if (path == NULL)
goto out;
static void nilfs_btree_init_path(struct nilfs_btree_path *path)
{
int level;
for (level = NILFS_BTREE_LEVEL_DATA;
level < NILFS_BTREE_LEVEL_MAX;
level++) {
for (; level < NILFS_BTREE_LEVEL_MAX; level++) {
path[level].bp_bh = NULL;
path[level].bp_sib_bh = NULL;
path[level].bp_index = 0;
@ -95,6 +88,14 @@ static void nilfs_btree_init_path(struct nilfs_btree_path *path)
path[level].bp_newreq.bpr_ptr = NILFS_BMAP_INVALID_PTR;
path[level].bp_op = NULL;
}
out:
return path;
}
static inline void nilfs_btree_free_path(struct nilfs_btree_path *path)
{
kmem_cache_free(nilfs_btree_path_cache, path);
}
static void nilfs_btree_release_path(struct nilfs_btree_path *path)
@ -566,7 +567,6 @@ static int nilfs_btree_lookup(const struct nilfs_bmap *bmap,
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level);
@ -594,7 +594,7 @@ static int nilfs_btree_lookup_contig(const struct nilfs_bmap *bmap,
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level);
if (ret < 0)
goto out;
@ -1123,7 +1123,6 @@ static int nilfs_btree_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
ret = nilfs_btree_do_lookup(btree, path, key, NULL,
NILFS_BTREE_LEVEL_NODE_MIN);
@ -1456,7 +1455,7 @@ static int nilfs_btree_delete(struct nilfs_bmap *bmap, __u64 key)
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
ret = nilfs_btree_do_lookup(btree, path, key, NULL,
NILFS_BTREE_LEVEL_NODE_MIN);
if (ret < 0)
@ -1488,7 +1487,6 @@ static int nilfs_btree_last_key(const struct nilfs_bmap *bmap, __u64 *keyp)
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
ret = nilfs_btree_do_lookup_last(btree, path, keyp, NULL);
@ -1923,7 +1921,6 @@ static int nilfs_btree_propagate(const struct nilfs_bmap *bmap,
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
if (buffer_nilfs_node(bh)) {
node = (struct nilfs_btree_node *)bh->b_data;
@ -2108,7 +2105,6 @@ static int nilfs_btree_assign(struct nilfs_bmap *bmap,
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
if (buffer_nilfs_node(*bh)) {
node = (struct nilfs_btree_node *)(*bh)->b_data;
@ -2175,7 +2171,6 @@ static int nilfs_btree_mark(struct nilfs_bmap *bmap, __u64 key, int level)
path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
nilfs_btree_init_path(path);
ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level + 1);
if (ret < 0) {