6.9-stable review patch. If anyone has any objections, please let me know.
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From: Baokun Li libaokun1@huawei.com
[ Upstream commit 751f524635a4f076117d714705eeddadaf6748ee ]
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@huawei.com Link: https://lore.kernel.org/r/20240628062930.2467993-7-libaokun@huaweicloud.com Acked-by: Jeff Layton jlayton@kernel.org Reviewed-by: Gao Xiang hsiangkao@linux.alibaba.com Reviewed-by: Jia Zhu zhujia.zj@bytedance.com Signed-off-by: Christian Brauner brauner@kernel.org Stable-dep-of: 12e009d60852 ("cachefiles: wait for ondemand_object_worker to finish when dropping object") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/cachefiles/ondemand.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c index 14f91a9fbe447..1c0fa7412a6fa 100644 --- a/fs/cachefiles/ondemand.c +++ b/fs/cachefiles/ondemand.c @@ -636,12 +636,31 @@ 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,