This patch adds a 'cleanup' function to the object operations structure,
which is called during objhash teardown before the final reference is
dropped. It provides a way to perform some object cleanup when checkpoint
or restart operation is finished, in scenarios where the final reference
count cannot be anticipated.
Signed-off-by: Dan Smith <danms@xxxxxxxxxx>
---
checkpoint/objhash.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/checkpoint/objhash.c b/checkpoint/objhash.c
index a410346..9750483 100644
--- a/checkpoint/objhash.c
+++ b/checkpoint/objhash.c
@@ -34,6 +34,7 @@ struct ckpt_obj_ops {
int (*ref_users)(void *ptr);
int (*checkpoint)(struct ckpt_ctx *ctx, void *ptr);
void *(*restore)(struct ckpt_ctx *ctx);
+ void (*cleanup)(void *ptr);
};
struct ckpt_obj {
@@ -399,6 +400,8 @@ static void obj_hash_clear(struct ckpt_obj_hash *obj_hash)
for (i = 0; i < CKPT_OBJ_HASH_TOTAL; i++) {
hlist_for_each_entry_safe(obj, n, t, &h[i], hash) {
+ if (obj->ops->cleanup)
+ obj->ops->cleanup(obj->ptr);
obj->ops->ref_drop(obj->ptr);
kfree(obj);
}
--
1.6.2.5
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