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fuse: separate pqueue for clones

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Make each fuse device clone refer to a separate processing queue.  The only
constraint on userspace code is that the request answer must be written to
the same device clone as it was read off.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi
2015-07-01 16:26:09 +02:00
parent cc080e9e9b
commit c3696046be
3 changed files with 44 additions and 29 deletions
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3
fs/fuse/inode.c
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@@ -592,10 +592,10 @@ void fuse_conn_init(struct fuse_conn *fc)
spin_lock_init(&fc->lock);
init_rwsem(&fc->killsb);
atomic_set(&fc->count, 1);
atomic_set(&fc->dev_count, 1);
init_waitqueue_head(&fc->blocked_waitq);
init_waitqueue_head(&fc->reserved_req_waitq);
fuse_iqueue_init(&fc->iq);
fuse_pqueue_init(&fc->pq);
INIT_LIST_HEAD(&fc->bg_queue);
INIT_LIST_HEAD(&fc->entry);
INIT_LIST_HEAD(&fc->devices);
@@ -999,6 +999,7 @@ struct fuse_dev *fuse_dev_alloc(struct fuse_conn *fc)
fud = kzalloc(sizeof(struct fuse_dev), GFP_KERNEL);
if (fud) {
fud->fc = fuse_conn_get(fc);
fuse_pqueue_init(&fud->pq);
spin_lock(&fc->lock);
list_add_tail(&fud->entry, &fc->devices);