Offering: HULK hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB5UKT
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Because after an object is dropped, requests for that object are useless, flush them to avoid causing other problems.
Signed-off-by: Baokun Li libaokun1@huawei.com --- fs/cachefiles/ondemand.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c index ceeff8363502..e7caafd939c3 100644 --- a/fs/cachefiles/ondemand.c +++ b/fs/cachefiles/ondemand.c @@ -593,12 +593,37 @@ int cachefiles_ondemand_init_object(struct cachefiles_object *object)
void cachefiles_ondemand_clean_object(struct cachefiles_object *object) { + void **slot; + struct cachefiles_req *req; + struct radix_tree_iter iter; + struct cachefiles_cache *cache; + if (!object->private) return;
cachefiles_ondemand_send_req(object, CACHEFILES_OP_CLOSE, 0, cachefiles_ondemand_init_close_req, NULL); + + if (!object->private->ondemand_id) + return; + + /* Flush all requests for the object that is being dropped. */ + cache = container_of(object->fscache.cache, + struct cachefiles_cache, cache); + xa_lock(&cache->reqs); cachefiles_ondemand_set_object_dropping(object); + radix_tree_for_each_slot(slot, &cache->reqs, &iter, 0) { + req = radix_tree_deref_slot_protected(slot, + &cache->reqs.xa_lock); + if (WARN_ON(!req)) + continue; + if (req->object == object) { + req->error = -EIO; + complete(&req->done); + radix_tree_delete(&cache->reqs, iter.index); + } + } + xa_unlock(&cache->reqs); }
int cachefiles_ondemand_read(struct cachefiles_object *object,