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btrfs: backref: rename and move link_backref_edge() 

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2020-03-03 13:24:06 +08:00 committed by David Sterba
parent 47254d07f3
commit f39911e552
2 changed files with 20 additions and 19 deletions
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16
fs/btrfs/backref.h
View File

@ -275,4 +275,20 @@ struct btrfs_backref_node *btrfs_backref_alloc_node(
struct btrfs_backref_edge *btrfs_backref_alloc_edge(
struct btrfs_backref_cache *cache);
#define LINK_LOWER (1 << 0)
#define LINK_UPPER (1 << 1)
static inline void btrfs_backref_link_edge(struct btrfs_backref_edge *edge,
struct btrfs_backref_node *lower,
struct btrfs_backref_node *upper,
int link_which)
{
ASSERT(upper && lower && upper->level == lower->level + 1);
edge->node[LOWER] = lower;
edge->node[UPPER] = upper;
if (link_which & LINK_LOWER)
list_add_tail(&edge->list[LOWER], &lower->upper);
if (link_which & LINK_UPPER)
list_add_tail(&edge->list[UPPER], &upper->lower);
}
#endif

23
fs/btrfs/relocation.c
View File

@ -218,21 +218,6 @@ static void free_backref_node(struct btrfs_backref_cache *cache,
}
}
#define LINK_LOWER (1 << 0)
#define LINK_UPPER (1 << 1)
static void link_backref_edge(struct btrfs_backref_edge *edge,
struct btrfs_backref_node *lower,
struct btrfs_backref_node *upper,
int link_which)
{
ASSERT(upper && lower && upper->level == lower->level + 1);
edge->node[LOWER] = lower;
edge->node[UPPER] = upper;
if (link_which & LINK_LOWER)
list_add_tail(&edge->list[LOWER], &lower->upper);
if (link_which & LINK_UPPER)
list_add_tail(&edge->list[UPPER], &upper->lower);
}
static void free_backref_edge(struct btrfs_backref_cache *cache,
struct btrfs_backref_edge *edge)
@ -595,7 +580,7 @@ static int handle_direct_tree_backref(struct btrfs_backref_cache *cache,
ASSERT(upper->checked);
INIT_LIST_HEAD(&edge->list[UPPER]);
}
link_backref_edge(edge, cur, upper, LINK_LOWER);
btrfs_backref_link_edge(edge, cur, upper, LINK_LOWER);
return 0;
}
@ -740,7 +725,7 @@ static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
if (!upper->owner)
upper->owner = btrfs_header_owner(eb);
}
link_backref_edge(edge, lower, upper, LINK_LOWER);
btrfs_backref_link_edge(edge, lower, upper, LINK_LOWER);
if (rb_node) {
btrfs_put_root(root);
@ -1256,8 +1241,8 @@ static int clone_backref_node(struct btrfs_trans_handle *trans,
if (!new_edge)
goto fail;
link_backref_edge(new_edge, edge->node[LOWER], new_node,
LINK_UPPER);
btrfs_backref_link_edge(new_edge, edge->node[LOWER],
new_node, LINK_UPPER);
}
} else {
list_add_tail(&new_node->lower, &cache->leaves);