Merge commit 'v2.6.33-rc5' into secretlab/test-devicetree

1 files changed, 20 insertions, 0 deletions

diff --git a/include/linux/reiserfs_fs_sb.h b/include/linux/reiserfs_fs_sb.h
index dab68bbed675..52c83b6a758a 100644
--- a/include/linux/reiserfs_fs_sb.h
+++ b/include/linux/reiserfs_fs_sb.h
@@ -7,6 +7,8 @@
 #ifdef __KERNEL__
 #include <linux/workqueue.h>
 #include <linux/rwsem.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
 #endif
 
 typedef enum {
@@ -355,6 +357,13 @@ struct reiserfs_sb_info {
         struct reiserfs_journal *s_journal;     /* pointer to journal information */
         unsigned short s_mount_state;   /* reiserfs state (valid, invalid) */
 
+        /* Serialize writers access, replace the old bkl */
+        struct mutex lock;
+        /* Owner of the lock (can be recursive) */
+        struct task_struct *lock_owner;
+        /* Depth of the lock, start from -1 like the bkl */
+        int lock_depth;
+
         /* Comment? -Hans */
         void (*end_io_handler) (struct buffer_head *, int);
         hashf_t s_hash_function;        /* pointer to function which is used
@@ -408,6 +417,17 @@ struct reiserfs_sb_info {
         char *s_qf_names[MAXQUOTAS];
         int s_jquota_fmt;
 #endif
+#ifdef CONFIG_REISERFS_CHECK
+
+        struct tree_balance *cur_tb;    /*
+                                         * Detects whether more than one
+                                         * copy of tb exists per superblock
+                                         * as a means of checking whether
+                                         * do_balance is executing concurrently
+                                         * against another tree reader/writer
+                                         * on a same mount point.
+                                         */
+#endif
 };
 
 /* Definitions of reiserfs on-disk properties: */