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| author | Tao Ma <tao.ma@oracle.com> | 2009-08-24 11:13:37 +0800 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2009-09-22 20:09:29 -0700 |
| commit | 374a263e790c4de85844283c098810a92985f623 (patch) | |
| tree | a72b1f072b973723ea1cf7def27608717cf1c033 /fs/ocfs2/super.c | |
| parent | c732eb16bf07f9bfb7fa72b6868462471273bdbd (diff) | |
| download | linux-374a263e790c4de85844283c098810a92985f623.tar.bz2 | |
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 <tao.ma@oracle.com>
Diffstat (limited to 'fs/ocfs2/super.c')
| -rw-r--r-- | fs/ocfs2/super.c | 5 |
1 files changed, 5 insertions, 0 deletions
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 = |