From 374a263e790c4de85844283c098810a92985f623 Mon Sep 17 00:00:00 2001 From: Tao Ma Date: Mon, 24 Aug 2009 11:13:37 +0800 Subject: ocfs2: Add refcount tree lock mechanism. Implement locking around struct ocfs2_refcount_tree. This protects all read/write operations on refcount trees. ocfs2_refcount_tree has its own lock and its own caching_info, protecting buffers among multiple nodes. User must call ocfs2_lock_refcount_tree before his operation on the tree and unlock it after that. ocfs2_refcount_trees are referenced by the block number of the refcount tree root block, So we create an rb-tree on the ocfs2_super to look them up. Signed-off-by: Tao Ma --- fs/ocfs2/super.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/ocfs2/super.c') diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index e35a5052ce3a..8b6062176970 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -69,6 +69,7 @@ #include "ver.h" #include "xattr.h" #include "quota.h" +#include "refcounttree.h" #include "buffer_head_io.h" @@ -1858,6 +1859,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) ocfs2_sync_blockdev(sb); + ocfs2_purge_refcount_trees(osb); + /* No cluster connection means we've failed during mount, so skip * all the steps which depended on that to complete. */ if (osb->cconn) { @@ -2064,6 +2067,8 @@ static int ocfs2_initialize_super(struct super_block *sb, goto bail; } + osb->osb_rf_lock_tree = RB_ROOT; + osb->s_feature_compat = le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); osb->s_feature_ro_compat = -- cgit v1.2.3