在 2024/6/28 14:29, libaokun@xxxxxxxxxxxxxxx 写道:
From: Baokun Li <libaokun1@xxxxxxxxxx>
Because after an object is dropped, requests for that object are useless,
cancel them to avoid causing other problems.
This prepares for the later addition of cancel_work_sync(). After the
reopen requests is generated, cancel it to avoid cancel_work_sync()
blocking by waiting for daemon to complete the reopen requests.
Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
Acked-by: Jeff Layton <jlayton@xxxxxxxxxx>
Reviewed-by: Jia Zhu <zhujia.zj@xxxxxxxxxxxxx>
---
fs/cachefiles/ondemand.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
index 8a3b52c3ebba..36b97ded16b4 100644
--- a/fs/cachefiles/ondemand.c
+++ b/fs/cachefiles/ondemand.c
@@ -669,12 +669,31 @@ int cachefiles_ondemand_init_object(struct cachefiles_object *object)
void cachefiles_ondemand_clean_object(struct cachefiles_object *object)
{
+ unsigned long index;
+ struct cachefiles_req *req;
+ struct cachefiles_cache *cache;
+
if (!object->ondemand)
return;
cachefiles_ondemand_send_req(object, CACHEFILES_OP_CLOSE, 0,
cachefiles_ondemand_init_close_req, NULL);
+
+ if (!object->ondemand->ondemand_id)
+ return;
+
+ /* Cancel all requests for the object that is being dropped. */
+ cache = object->volume->cache;
+ xa_lock(&cache->reqs);
cachefiles_ondemand_set_object_dropping(object);
+ xa_for_each(&cache->reqs, index, req) {
+ if (req->object == object) {
+ req->error = -EIO;
+ complete(&req->done);
+ __xa_erase(&cache->reqs, index);
+ }
+ }
+ xa_unlock(&cache->reqs);
}
int cachefiles_ondemand_init_obj_info(struct cachefiles_object *object,
