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client: split _hash_insert list manipulation

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This commit is contained in:
Thomas Schoebel-Theuer 2023-05-11 09:28:23 +02:00
parent 925f564e8f
commit 732dbc7a75
1 changed files with 26 additions and 9 deletions
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35
kernel/mars_client.c
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@ -546,29 +546,46 @@ static void client_ref_put(struct client_output *output, struct mref_object *mre
}
static
void _hash_insert(struct client_output *output,
struct client_mref_aspect *mref_a,
bool refresh_completed)
void __io_insert(struct client_output *output,
struct client_mref_aspect *mref_a)
{
list_del(&mref_a->io_head);
list_add_tail(&mref_a->io_head, &output->mref_list);
}
static
void __hash_insert(struct client_output *output,
struct client_mref_aspect *mref_a)
{
struct mref_object *mref = mref_a->object;
int ref_id;
unsigned int hash_index;
mutex_lock(&output->mutex);
if (refresh_completed)
mref_a->has_completed = false;
list_del(&mref_a->io_head);
list_add_tail(&mref_a->io_head, &output->mref_list);
list_del(&mref_a->hash_head);
ref_id = READ_ONCE(mref->ref_id);
while (!ref_id) {
if (!ref_id) {
/* This may wrap around without harm */
ref_id = READ_ONCE(output->last_id) + 1;
if (!ref_id)
ref_id++;
WRITE_ONCE(output->last_id, ref_id);
WRITE_ONCE(mref->ref_id, ref_id);
}
hash_index = CLIENT_HASH_FN(ref_id);
list_add_tail(&mref_a->hash_head, &output->hash_table[hash_index]);
}
static
void _hash_insert(struct client_output *output,
struct client_mref_aspect *mref_a,
bool refresh_completed)
{
mb();
mutex_lock(&output->mutex);
if (refresh_completed)
mref_a->has_completed = false;
__io_insert(output, mref_a);
__hash_insert(output, mref_a);
mutex_unlock(&output->mutex);
}