aboutsummaryrefslogtreecommitdiffstats
path: root/fs/fuse/inode.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/fuse/inode.c')
-rw-r--r--fs/fuse/inode.c40
1 files changed, 18 insertions, 22 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 43a6fc0db8a7..7627022446b2 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -204,26 +204,17 @@ static void fuse_put_super(struct super_block *sb)
204{ 204{
205 struct fuse_conn *fc = get_fuse_conn_super(sb); 205 struct fuse_conn *fc = get_fuse_conn_super(sb);
206 206
207 down_write(&fc->sbput_sem);
208 while (!list_empty(&fc->background))
209 fuse_release_background(fc,
210 list_entry(fc->background.next,
211 struct fuse_req, bg_entry));
212
207 spin_lock(&fc->lock); 213 spin_lock(&fc->lock);
214 fc->mounted = 0;
208 fc->connected = 0; 215 fc->connected = 0;
209 while (!list_empty(&fc->background)) {
210 struct fuse_req *req = list_entry(fc->background.next,
211 struct fuse_req, bg_entry);
212 struct inode *inode = req->inode;
213 struct inode *inode2 = req->inode2;
214
215 /* File would hold a reference to vfsmount */
216 BUG_ON(req->file);
217 req->inode = NULL;
218 req->inode2 = NULL;
219 fuse_remove_background(fc, req);
220
221 spin_unlock(&fc->lock);
222 iput(inode);
223 iput(inode2);
224 spin_lock(&fc->lock);
225 }
226 spin_unlock(&fc->lock); 216 spin_unlock(&fc->lock);
217 up_write(&fc->sbput_sem);
227 /* Flush all readers on this fs */ 218 /* Flush all readers on this fs */
228 kill_fasync(&fc->fasync, SIGIO, POLL_IN); 219 kill_fasync(&fc->fasync, SIGIO, POLL_IN);
229 wake_up_all(&fc->waitq); 220 wake_up_all(&fc->waitq);
@@ -395,6 +386,7 @@ static struct fuse_conn *new_conn(void)
395 INIT_LIST_HEAD(&fc->processing); 386 INIT_LIST_HEAD(&fc->processing);
396 INIT_LIST_HEAD(&fc->io); 387 INIT_LIST_HEAD(&fc->io);
397 INIT_LIST_HEAD(&fc->background); 388 INIT_LIST_HEAD(&fc->background);
389 init_rwsem(&fc->sbput_sem);
398 kobj_set_kset_s(fc, connections_subsys); 390 kobj_set_kset_s(fc, connections_subsys);
399 kobject_init(&fc->kobj); 391 kobject_init(&fc->kobj);
400 atomic_set(&fc->num_waiting, 0); 392 atomic_set(&fc->num_waiting, 0);
@@ -508,11 +500,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
508 if (file->f_op != &fuse_dev_operations) 500 if (file->f_op != &fuse_dev_operations)
509 return -EINVAL; 501 return -EINVAL;
510 502
511 /* Setting file->private_data can't race with other mount()
512 instances, since BKL is held for ->get_sb() */
513 if (file->private_data)
514 return -EINVAL;
515
516 fc = new_conn(); 503 fc = new_conn();
517 if (!fc) 504 if (!fc)
518 return -ENOMEM; 505 return -ENOMEM;
@@ -548,7 +535,14 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
548 if (err) 535 if (err)
549 goto err_free_req; 536 goto err_free_req;
550 537
538 /* Setting file->private_data can't race with other mount()
539 instances, since BKL is held for ->get_sb() */
540 err = -EINVAL;
541 if (file->private_data)
542 goto err_kobject_del;
543
551 sb->s_root = root_dentry; 544 sb->s_root = root_dentry;
545 fc->mounted = 1;
552 fc->connected = 1; 546 fc->connected = 1;
553 kobject_get(&fc->kobj); 547 kobject_get(&fc->kobj);
554 file->private_data = fc; 548 file->private_data = fc;
@@ -563,6 +557,8 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
563 557
564 return 0; 558 return 0;
565 559
560 err_kobject_del:
561 kobject_del(&fc->kobj);
566 err_free_req: 562 err_free_req:
567 fuse_request_free(init_req); 563 fuse_request_free(init_req);
568 err_put_root: 564 err_put_root: