diff options
| author | Justus Winter <4winter@informatik.uni-hamburg.de> | 2014-05-14 11:19:35 +0200 |
|---|---|---|
| committer | Justus Winter <4winter@informatik.uni-hamburg.de> | 2015-04-17 14:06:46 +0200 |
| commit | c16eed2cb64089bf7d958db0fe85352f4ceefb4d (patch) | |
| tree | 3240f6e025fa4c4fb47d7d270f285a7f0f9612e4 /libdiskfs/node-nputl.c | |
| parent | 8c050fb080c6e1981dc8e5a97a2313cd24e9b4b4 (diff) | |
libdiskfs: lock-less reference counting of nodes
* libdiskfs/diskfs.h (struct node): Use refcounts_t for reference counting.
(diskfs_node_refcnt_lock): Remove.
(diskfs_node_norefs,diskfs_drop_node): Change comments accordingly.
* libdiskfs/init-init.c: Adjust accordingly.
* libdiskfs/node-drop.c: Likewise.
* libdiskfs/node-make.c: Likewise.
* libdiskfs/node-nput.c: Likewise.
* libdiskfs/node-nputl.c: Likewise.
* libdiskfs/node-nref.c: Likewise.
* libdiskfs/node-nrefl.c: Likewise.
* libdiskfs/node-nrele.c: Likewise.
* libdiskfs/node-nrelel.c: Likewise.
* ext2fs/inode.c: Likewise.
* fatfs/inode.c: Likewise.
* isofs/inode.c: Likewise.
* tmpfs/node.c: Likewise.
* doc/hurd.texi: Likewise.
Diffstat (limited to 'libdiskfs/node-nputl.c')
| -rw-r--r-- | libdiskfs/node-nputl.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/libdiskfs/node-nputl.c b/libdiskfs/node-nputl.c index 19596654..8dac16e3 100644 --- a/libdiskfs/node-nputl.c +++ b/libdiskfs/node-nputl.c @@ -25,14 +25,10 @@ void diskfs_nput_light (struct node *np) { - pthread_spin_lock (&diskfs_node_refcnt_lock); - assert (np->light_references); - np->light_references--; - if (np->references + np->light_references == 0) + struct references result; + refcounts_deref_weak (&np->refcounts, &result); + if (result.hard == 0 && result.weak == 0) diskfs_drop_node (np); else - { - pthread_spin_unlock (&diskfs_node_refcnt_lock); - pthread_mutex_unlock (&np->lock); - } + pthread_mutex_unlock (&np->lock); } |