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-rw-r--r--fs/cachefiles/ondemand.c45
1 files changed, 16 insertions, 29 deletions
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
index 3dd002108a87..bb94ef6a6f61 100644
--- a/fs/cachefiles/ondemand.c
+++ b/fs/cachefiles/ondemand.c
@@ -305,7 +305,6 @@ ssize_t cachefiles_ondemand_daemon_read(struct cachefiles_cache *cache,
{
struct cachefiles_req *req;
struct cachefiles_msg *msg;
- unsigned long id = 0;
size_t n;
int ret = 0;
XA_STATE(xas, &cache->reqs, cache->req_id_next);
@@ -340,49 +339,37 @@ ssize_t cachefiles_ondemand_daemon_read(struct cachefiles_cache *cache,
cachefiles_grab_object(req->object, cachefiles_obj_get_read_req);
xa_unlock(&cache->reqs);
- id = xas.xa_index;
-
if (msg->opcode == CACHEFILES_OP_OPEN) {
ret = cachefiles_ondemand_get_fd(req);
if (ret) {
cachefiles_ondemand_set_object_close(req->object);
- goto error;
+ goto out;
}
}
- msg->msg_id = id;
+ msg->msg_id = xas.xa_index;
msg->object_id = req->object->ondemand->ondemand_id;
if (copy_to_user(_buffer, msg, n) != 0) {
ret = -EFAULT;
- goto err_put_fd;
- }
-
- cachefiles_put_object(req->object, cachefiles_obj_put_read_req);
- /* CLOSE request has no reply */
- if (msg->opcode == CACHEFILES_OP_CLOSE) {
- xa_erase(&cache->reqs, id);
- complete(&req->done);
+ if (msg->opcode == CACHEFILES_OP_OPEN)
+ close_fd(((struct cachefiles_open *)msg->data)->fd);
}
-
- cachefiles_req_put(req);
- return n;
-
-err_put_fd:
- if (msg->opcode == CACHEFILES_OP_OPEN)
- close_fd(((struct cachefiles_open *)msg->data)->fd);
-error:
+out:
cachefiles_put_object(req->object, cachefiles_obj_put_read_req);
- xas_reset(&xas);
- xas_lock(&xas);
- if (xas_load(&xas) == req) {
- req->error = ret;
- complete(&req->done);
- xas_store(&xas, NULL);
+ /* Remove error request and CLOSE request has no reply */
+ if (ret || msg->opcode == CACHEFILES_OP_CLOSE) {
+ xas_reset(&xas);
+ xas_lock(&xas);
+ if (xas_load(&xas) == req) {
+ req->error = ret;
+ complete(&req->done);
+ xas_store(&xas, NULL);
+ }
+ xas_unlock(&xas);
}
- xas_unlock(&xas);
cachefiles_req_put(req);
- return ret;
+ return ret ? ret : n;
}
typedef int (*init_req_fn)(struct cachefiles_req *req, void *private);