Revert "[fuse] fix deadlock between fuse_put_super() and request_end()"
This reverts 73ce8355c243a434524a34c05cc417dd0467996e commit.
It was wrong, because it didn't take into account the requirement,
that iput() for background requests must be performed synchronously
with ->put_super(), otherwise active inodes may remain after unmount.
The right solution is to keep the sbput_sem and perform iput() within
the locked region, but move fput() outside sbput_sem.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 59661c4..0474202 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -258,9 +258,15 @@
/** waitq for blocked connection */
wait_queue_head_t blocked_waitq;
+ /** RW semaphore for exclusion with fuse_put_super() */
+ struct rw_semaphore sbput_sem;
+
/** The next unique request id */
u64 reqctr;
+ /** Mount is active */
+ unsigned mounted;
+
/** Connection established, cleared on umount, connection
abort and device release */
unsigned connected;
@@ -471,11 +477,11 @@
void request_send_background(struct fuse_conn *fc, struct fuse_req *req);
/**
- * Remove request from the the background list
+ * Release inodes and file associated with background request
*/
-void fuse_remove_background(struct fuse_conn *fc, struct fuse_req *req);
+void fuse_release_background(struct fuse_conn *fc, struct fuse_req *req);
-/** Abort all requests */
+/* Abort all requests */
void fuse_abort_conn(struct fuse_conn *fc);
/**