[PATCH v3 03/20] packfile: use hashmap_entry in delta_base_cache_entry

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This hashmap_entry_init function is intended to take a
hashmap_entry struct pointer, not a hashmap struct pointer.

This was not noticed because hashmap_entry_init takes a "void *"
arg instead of "struct hashmap_entry *", and the hashmap struct
is larger and can be cast into a hashmap_entry struct without
data corruption.

This has the beneficial side effect of reducing the size of
a delta_base_cache_entry from 104 bytes to 72 bytes on 64-bit
systems.

Signed-off-by: Eric Wong <e@xxxxxxxxx>
Reviewed-by: Derrick Stolee <stolee@xxxxxxxxx>
---
 packfile.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packfile.c b/packfile.c
index fc43a6c52c..37fe0b73a6 100644
--- a/packfile.c
+++ b/packfile.c
@@ -1361,7 +1361,7 @@ struct delta_base_cache_key {
 };
 
 struct delta_base_cache_entry {
-	struct hashmap hash;
+	struct hashmap_entry ent;
 	struct delta_base_cache_key key;
 	struct list_head lru;
 	void *data;



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