[PATCH] fuse: add number of waiting requests attribute

[karo-tx-linux.git] / fs / fuse / dev.c

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index de4a0a0bda8a6bd55a792a492c8ce1acb6eda20b..c72e44b58d098b197b740ec720389e2ae7c63583 100644 (file)
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -109,18 +109,24 @@ struct fuse_req *fuse_get_request(struct fuse_conn *fc)
        int intr;
        sigset_t oldset;
 
+       atomic_inc(&fc->num_waiting);
        block_sigs(&oldset);
        intr = down_interruptible(&fc->outstanding_sem);
        restore_sigs(&oldset);
-       return intr ? NULL : do_get_request(fc);
+       if (intr) {
+               atomic_dec(&fc->num_waiting);
+               return NULL;
+       }
+       return do_get_request(fc);
 }
 
 static void fuse_putback_request(struct fuse_conn *fc, struct fuse_req *req)
 {
        spin_lock(&fuse_lock);
-       if (req->preallocated)
+       if (req->preallocated) {
+               atomic_dec(&fc->num_waiting);
                list_add(&req->list, &fc->unused_list);
-       else
+       } else
                fuse_request_free(req);
 
        /* If we are in debt decrease that first */