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authorVivek Goyal <vgoyal@redhat.com>2019-10-30 11:07:18 -0400
committerMiklos Szeredi <mszeredi@redhat.com>2019-11-22 13:29:49 +0100
commit1efcf39eb627573f8d543ea396cf36b0651b1e56 (patch)
tree8d330a4c3fb485c3a4c60a5740d045deb7c1e66f /fs/fuse
parent58ada94f95f71d4f73197ab0e9603dbba6e47fe3 (diff)
downloadlinux-1efcf39eb627573f8d543ea396cf36b0651b1e56.tar.bz2
virtiofs: Do not send forget request "struct list_head" element
We are sending whole of virtio_fs_forget struct to the other end over virtqueue. Other end does not need to see elements like "struct list". That's internal detail of guest kernel. Fix it. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse')
-rw-r--r--fs/fuse/virtio_fs.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index 6444dae5054b..da603e0cbd0d 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -48,11 +48,15 @@ struct virtio_fs {
unsigned int num_request_queues; /* number of request queues */
};
-struct virtio_fs_forget {
+struct virtio_fs_forget_req {
struct fuse_in_header ih;
struct fuse_forget_in arg;
+};
+
+struct virtio_fs_forget {
/* This request can be temporarily queued on virt queue */
struct list_head list;
+ struct virtio_fs_forget_req req;
};
static int virtio_fs_enqueue_req(struct virtio_fs_vq *fsvq,
@@ -325,6 +329,7 @@ static int send_forget_request(struct virtio_fs_vq *fsvq,
struct virtqueue *vq;
int ret = 0;
bool notify;
+ struct virtio_fs_forget_req *req = &forget->req;
spin_lock(&fsvq->lock);
if (!fsvq->connected) {
@@ -334,7 +339,7 @@ static int send_forget_request(struct virtio_fs_vq *fsvq,
goto out;
}
- sg_init_one(&sg, forget, sizeof(*forget));
+ sg_init_one(&sg, req, sizeof(*req));
vq = fsvq->vq;
dev_dbg(&vq->vdev->dev, "%s\n", __func__);
@@ -730,6 +735,7 @@ __releases(fiq->lock)
{
struct fuse_forget_link *link;
struct virtio_fs_forget *forget;
+ struct virtio_fs_forget_req *req;
struct virtio_fs *fs;
struct virtio_fs_vq *fsvq;
u64 unique;
@@ -743,14 +749,15 @@ __releases(fiq->lock)
/* Allocate a buffer for the request */
forget = kmalloc(sizeof(*forget), GFP_NOFS | __GFP_NOFAIL);
+ req = &forget->req;
- forget->ih = (struct fuse_in_header){
+ req->ih = (struct fuse_in_header){
.opcode = FUSE_FORGET,
.nodeid = link->forget_one.nodeid,
.unique = unique,
- .len = sizeof(*forget),
+ .len = sizeof(*req),
};
- forget->arg = (struct fuse_forget_in){
+ req->arg = (struct fuse_forget_in){
.nlookup = link->forget_one.nlookup,
};