[PATCH] fuse: introduce unified request state
The state of request was made up of 2 bitfields (->sent and ->finished) and of
the fact that the request was on a list or not.
Unify this into a single state field.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 4f1ca7b..bc8a384 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -181,7 +181,7 @@
*/
static void request_end(struct fuse_conn *fc, struct fuse_req *req)
{
- req->finished = 1;
+ req->state = FUSE_REQ_FINISHED;
spin_unlock(&fuse_lock);
if (req->background) {
down_read(&fc->sbput_sem);
@@ -250,10 +250,10 @@
spin_unlock(&fuse_lock);
block_sigs(&oldset);
- wait_event_interruptible(req->waitq, req->finished);
+ wait_event_interruptible(req->waitq, req->state == FUSE_REQ_FINISHED);
restore_sigs(&oldset);
spin_lock(&fuse_lock);
- if (req->finished)
+ if (req->state == FUSE_REQ_FINISHED)
return;
req->out.h.error = -EINTR;
@@ -268,10 +268,10 @@
wait_event(req->waitq, !req->locked);
spin_lock(&fuse_lock);
}
- if (!req->sent && !list_empty(&req->list)) {
+ if (req->state == FUSE_REQ_PENDING) {
list_del(&req->list);
__fuse_put_request(req);
- } else if (!req->finished && req->sent)
+ } else if (req->state == FUSE_REQ_SENT)
background_request(fc, req);
}
@@ -306,6 +306,7 @@
fc->outstanding_debt++;
}
list_add_tail(&req->list, &fc->pending);
+ req->state = FUSE_REQ_PENDING;
wake_up(&fc->waitq);
}
@@ -639,6 +640,7 @@
goto err_unlock;
req = list_entry(fc->pending.next, struct fuse_req, list);
+ req->state = FUSE_REQ_READING;
list_del_init(&req->list);
in = &req->in;
@@ -672,7 +674,7 @@
if (!req->isreply)
request_end(fc, req);
else {
- req->sent = 1;
+ req->state = FUSE_REQ_SENT;
list_add_tail(&req->list, &fc->processing);
spin_unlock(&fuse_lock);
}