fuse: fix reserved request wake up

Use wake_up_all instead of wake_up in put_reserved_req(), otherwise it is
possible that the right task is not woken up.

Also create a separate reserved_req_waitq in addition to the blocked_waitq,
since they fulfill totally separate functions.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 9f4603beb9e8..95bcb433d1b4 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -289,6 +289,9 @@ struct fuse_conn {
         /** waitq for blocked connection */
         wait_queue_head_t blocked_waitq;
 
+        /** waitq for reserved requests */
+        wait_queue_head_t reserved_req_waitq;
+
         /** The next unique request id */
         u64 reqctr;