diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2018-06-18 15:53:19 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2019-09-12 14:59:41 +0200 |
| commit | ae3aad77f46fbba56eff7141b2fc49870b60827e (patch) | |
| tree | 066161473fe29b6b0c37b94cf351df23744479cf /fs/fuse/cuse.c | |
| parent | 0cc2656cdb0b1f234e6d29378cb061e29d7522bc (diff) | |
| download | linux-ae3aad77f46fbba56eff7141b2fc49870b60827e.tar.bz2 | |
fuse: add fuse_iqueue_ops callbacks
The /dev/fuse device uses fiq->waitq and fasync to signal that requests are
available. These mechanisms do not apply to virtio-fs. This patch
introduces callbacks so alternative behavior can be used.
Note that queue_interrupt() changes along these lines:
spin_lock(&fiq->waitq.lock);
wake_up_locked(&fiq->waitq);
+ kill_fasync(&fiq->fasync, SIGIO, POLL_IN);
spin_unlock(&fiq->waitq.lock);
- kill_fasync(&fiq->fasync, SIGIO, POLL_IN);
Since queue_request() and queue_forget() also call kill_fasync() inside
the spinlock this should be safe.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/cuse.c')
| -rw-r--r-- | fs/fuse/cuse.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index 2332e7f960a8..6a0de0ce4403 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -506,7 +506,7 @@ static int cuse_channel_open(struct inode *inode, struct file *file) * Limit the cuse channel to requests that can * be represented in file->f_cred->user_ns. */ - fuse_conn_init(&cc->fc, file->f_cred->user_ns); + fuse_conn_init(&cc->fc, file->f_cred->user_ns, &fuse_dev_fiq_ops, NULL); fud = fuse_dev_alloc(&cc->fc); if (!fud) { |