From 6a71c766e60a9ac12876a0ea8a10c997df2507a3 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 7 Apr 2022 22:21:31 +0200
Subject: kernel/vfs: implement a vfs request queue

---
 src/kernel/vfs/request.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

(limited to 'src/kernel/vfs/request.c')

diff --git a/src/kernel/vfs/request.c b/src/kernel/vfs/request.c
index 45a7ae7..0214ca7 100644
--- a/src/kernel/vfs/request.c
+++ b/src/kernel/vfs/request.c
@@ -10,10 +10,11 @@ int vfs_request_create(struct vfs_request req_) {
 	struct vfs_request *req;
 	int ret;
 	process_current->state = PS_WAITS4FS;
+	process_current->waits4fs.queue_next = NULL;
 
 	// the request is owned by the caller
-	process_current->pending_req = req_;
-	req = &process_current->pending_req;
+	process_current->waits4fs.req = req_;
+	req = &process_current->waits4fs.req;
 
 	if (!req->backend)
 		return vfs_request_finish(req, -1);
@@ -26,8 +27,10 @@ int vfs_request_create(struct vfs_request req_) {
 		case VFS_BACK_USER:
 			if (req->backend->handler == NULL) {
 				// backend isn't ready yet, join the queue
-				assert(req->backend->queue == NULL); // TODO implement a proper queue
-				req->backend->queue = process_current;
+				struct process **iter = &req->backend->queue;
+				while (*iter != NULL)
+					iter = &(*iter)->waits4fs.queue_next;
+				*iter = process_current;
 				process_switch_any();
 			} else {
 				vfs_request_pass2handler(req);
-- 
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