From: Vivek Goyal <vgoyal@redhat.com>
To: linux-fsdevel@vger.kernel.org,
virtualization@lists.linux-foundation.org, miklos@szeredi.hu
Cc: linux-kernel@vger.kernel.org, virtio-fs@redhat.com,
vgoyal@redhat.com, stefanha@redhat.com, dgilbert@redhat.com,
mst@redhat.com
Subject: [PATCH 14/18] virtiofs: Add a fuse_iqueue operation to put() reference
Date: Thu, 5 Sep 2019 15:48:55 -0400 [thread overview]
Message-ID: <20190905194859.16219-15-vgoyal@redhat.com> (raw)
In-Reply-To: <20190905194859.16219-1-vgoyal@redhat.com>
Soon I will make virtio_fs object reference counted, where reference will
be taken by device as well as by fuse_conn (fuse_conn->fuse_iqueue->fiq_priv).
When fuse_connection is going away, it should put its reference on virtio_fs
object.
So add a fuse_iqueue method which can be used to call into virtio_fs to
put the reference on the object (fiq_priv).
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
---
fs/fuse/fuse_i.h | 5 +++++
fs/fuse/inode.c | 6 ++++++
2 files changed, 11 insertions(+)
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 85e2dcad68c1..04e2c000d63f 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -479,6 +479,11 @@ struct fuse_iqueue_ops {
*/
void (*wake_pending_and_unlock)(struct fuse_iqueue *fiq)
__releases(fiq->waitq.lock);
+
+ /**
+ * Put a reference on fiq_priv.
+ */
+ void (*put)(struct fuse_iqueue *fiq);
};
/** /dev/fuse input queue operations */
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 7fa0dcc6f565..70a433bdf01f 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -631,8 +631,14 @@ EXPORT_SYMBOL_GPL(fuse_conn_init);
void fuse_conn_put(struct fuse_conn *fc)
{
if (refcount_dec_and_test(&fc->count)) {
+ struct fuse_iqueue *fiq = &fc->iq;
+
if (fc->destroy_req)
fuse_request_free(fc->destroy_req);
+ if (fiq->priv && fiq->ops->put) {
+ fiq->ops->put(fiq);
+ fiq->priv = NULL;
+ }
put_pid_ns(fc->pid_ns);
put_user_ns(fc->user_ns);
fc->release(fc);
--
2.20.1
next prev parent reply other threads:[~2019-09-05 19:49 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 19:48 [PATCH 00/18] virtiofs: Fix various races and cleanups round 1 Vivek Goyal
2019-09-05 19:48 ` [PATCH 01/18] virtiofs: Remove request from processing list before calling end Vivek Goyal
2019-09-06 10:40 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 02/18] virtiofs: Check whether hiprio queue is connected at submission time Vivek Goyal
2019-09-06 10:43 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 03/18] virtiofs: Pass fsvq instead of vq as parameter to virtio_fs_enqueue_req Vivek Goyal
2019-09-06 10:44 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 04/18] virtiofs: Check connected state for VQ_REQUEST queue as well Vivek Goyal
2019-09-06 10:45 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 05/18] Maintain count of in flight requests for VQ_REQUEST queue Vivek Goyal
2019-09-06 10:46 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 06/18] virtiofs: ->remove should not clean virtiofs fuse devices Vivek Goyal
2019-09-06 10:47 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 07/18] virtiofs: Stop virtiofs queues when device is being removed Vivek Goyal
2019-09-06 10:47 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 08/18] virtiofs: Drain all pending requests during ->remove time Vivek Goyal
2019-09-06 10:52 ` Stefan Hajnoczi
2019-09-06 14:17 ` Vivek Goyal
2019-09-06 14:18 ` Michael S. Tsirkin
2019-09-09 16:10 ` Stefan Hajnoczi
2019-09-08 10:11 ` [Virtio-fs] " piaojun
2019-09-05 19:48 ` [PATCH 09/18] virtiofs: Add an helper to start all the queues Vivek Goyal
2019-09-06 10:54 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 10/18] virtiofs: Do not use device managed mem for virtio_fs and virtio_fs_vq Vivek Goyal
2019-09-06 10:56 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 11/18] virtiofs: stop and drain queues after sending DESTROY Vivek Goyal
2019-09-06 11:50 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 12/18] virtiofs: Use virtio_fs_free_devs() in error path Vivek Goyal
2019-09-06 11:51 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 13/18] virtiofs: Do not access virtqueue in request submission path Vivek Goyal
2019-09-06 11:52 ` Stefan Hajnoczi
2019-09-05 19:48 ` Vivek Goyal [this message]
2019-09-06 12:00 ` [PATCH 14/18] virtiofs: Add a fuse_iqueue operation to put() reference Stefan Hajnoczi
2019-09-06 13:35 ` Vivek Goyal
2019-09-05 19:48 ` [PATCH 15/18] virtiofs: Make virtio_fs object refcounted Vivek Goyal
2019-09-06 12:03 ` Stefan Hajnoczi
2019-09-06 13:50 ` Vivek Goyal
2019-09-09 16:12 ` Stefan Hajnoczi
2019-09-08 11:10 ` [Virtio-fs] " piaojun
2019-09-09 15:35 ` Vivek Goyal
2019-09-05 19:48 ` [PATCH 16/18] virtiofs: Use virtio_fs_mutex for races w.r.t ->remove and mount path Vivek Goyal
2019-09-06 12:05 ` Stefan Hajnoczi
2019-09-06 13:51 ` Vivek Goyal
2019-09-09 16:13 ` Stefan Hajnoczi
2019-09-08 11:19 ` [Virtio-fs] " piaojun
2019-09-05 19:48 ` [PATCH 17/18] virtiofs: Remove TODO to quiesce/end_requests Vivek Goyal
2019-09-06 12:06 ` Stefan Hajnoczi
2019-09-05 19:48 ` [PATCH 18/18] virtiofs: Remove TODO item from virtio_fs_free_devs() Vivek Goyal
2019-09-06 12:06 ` Stefan Hajnoczi
2019-09-06 8:15 ` [PATCH 00/18] virtiofs: Fix various races and cleanups round 1 Miklos Szeredi
2019-09-06 10:36 ` Stefan Hajnoczi
2019-09-06 11:52 ` Miklos Szeredi
2019-09-06 12:08 ` Vivek Goyal
2019-09-06 13:55 ` Miklos Szeredi
2019-09-06 13:57 ` Michael S. Tsirkin
2019-09-06 14:11 ` Miklos Szeredi
2019-09-06 14:17 ` Michael S. Tsirkin
2019-09-08 11:53 ` [Virtio-fs] " piaojun
2019-09-09 16:14 ` Stefan Hajnoczi
2019-09-09 16:18 ` Michael S. Tsirkin
2019-09-09 23:52 ` piaojun
2019-09-06 13:37 ` Michael S. Tsirkin
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