From 1d1da90042d2ee7a8215dc6291b54bc1ebe59fe4 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Tue, 6 May 2014 19:07:13 +0200
Subject: libtrivfs: lock-less reference counting for trivfs_peropen objects

* libtrivfs/trivfs.h (struct trivfs_peropen): Use refcount_t for field
refcnt.
(struct trivfs_control): Remove unused field lock.
* libtrivfs/cntl-create.c (trivfs_create_control): Drop the mutex
initialization.
* libtrivfs/io-reauthenticate.c (trivfs_S_io_reauthenticate): Adjust
accordingly.
* libtrivfs/io-restrict-auth.c (trivfs_S_io_restrict_auth): Likewise.
* libtrivfs/open.c (trivfs_open): Initialize refcnt.
* libtrivfs/protid-clean.c (trivfs_clean_protid): Likewise.
* libtrivfs/protid-dup.c (trivfs_protid_dup): Likewise.
---
 libtrivfs/io-restrict-auth.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'libtrivfs/io-restrict-auth.c')

diff --git a/libtrivfs/io-restrict-auth.c b/libtrivfs/io-restrict-auth.c
index 65b4fd62..39670fe3 100644
--- a/libtrivfs/io-restrict-auth.c
+++ b/libtrivfs/io-restrict-auth.c
@@ -110,10 +110,8 @@ trivfs_S_io_restrict_auth (struct trivfs_protid *cred,
     }
 
   newcred->isroot = 0;
-  pthread_mutex_lock (&cred->po->cntl->lock);
   newcred->po = cred->po;
-  newcred->po->refcnt++;
-  pthread_mutex_unlock (&cred->po->cntl->lock);
+  refcount_ref (&newcred->po->refcnt);
   if (cred->isroot && idvec_contains (user->uids, 0))
     newcred->isroot = 1;
   newcred->user = user;
-- 
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