Re: [GSoC Patch 2/3] commit: convert commit->generation to a slab

In this commit, we will use the generation slab helpers introduced in
last commit and replace existing uses of commit->generation using
'contrib/coccinelle/generation.cocci'

Signed-off-by: Abhishek Kumar <redacted>
---
 alloc.c                             |  1 -
 blame.c                             |  2 +-
 commit-graph.c                      | 39 +++++++++++-----------
 commit-reach.c                      | 50 ++++++++++++++---------------
 commit.c                            |  4 +--
 commit.h                            |  1 -
 contrib/coccinelle/generation.cocci | 12 +++++++
 revision.c                          | 16 ++++-----
 8 files changed, 68 insertions(+), 57 deletions(-)
 create mode 100644 contrib/coccinelle/generation.cocci

diff --git a/alloc.c b/alloc.c
index 1c64c4dd16..cbed187094 100644
--- a/alloc.c
+++ b/alloc.c

@@ -109,7 +109,6 @@ void init_commit_node(struct repository *r, struct commit *c)
 	c->object.type = OBJ_COMMIT;
 	c->index = alloc_commit_index(r);
 	c->graph_pos = COMMIT_NOT_FROM_GRAPH;
-	c->generation = GENERATION_NUMBER_INFINITY;
 }
 
 void *alloc_commit_node(struct repository *r)

diff --git a/blame.c b/blame.c
index da7e28800e..50e6316076 100644
--- a/blame.c
+++ b/blame.c

@@ -1272,7 +1272,7 @@ static int maybe_changed_path(struct repository *r,
 	if (!bd)
 		return 1;
 
-	if (origin->commit->generation == GENERATION_NUMBER_INFINITY)
+	if (generation(origin->commit) == GENERATION_NUMBER_INFINITY)