1 files changed, 32 insertions, 2 deletions

diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 9ff5811345a9..31692379c170 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -208,11 +208,14 @@ struct ocfs2_super
         u32 s_feature_incompat;
         u32 s_feature_ro_compat;
 
-        /* Protects s_next_generaion, osb_flags. Could protect more on
-         * osb as it's very short lived. */
+        /* Protects s_next_generation, osb_flags and s_inode_steal_slot.
+         * Could protect more on osb as it's very short lived.
+         */
         spinlock_t osb_lock;
         u32 s_next_generation;
         unsigned long osb_flags;
+        s16 s_inode_steal_slot;
+        atomic_t s_num_inodes_stolen;
 
         unsigned long s_mount_opt;
         unsigned int s_atime_quantum;
@@ -537,6 +540,33 @@ static inline unsigned int ocfs2_pages_per_cluster(struct super_block *sb)
         return pages_per_cluster;
 }
 
+static inline void ocfs2_init_inode_steal_slot(struct ocfs2_super *osb)
+{
+        spin_lock(&osb->osb_lock);
+        osb->s_inode_steal_slot = OCFS2_INVALID_SLOT;
+        spin_unlock(&osb->osb_lock);
+        atomic_set(&osb->s_num_inodes_stolen, 0);
+}
+
+static inline void ocfs2_set_inode_steal_slot(struct ocfs2_super *osb,
+                                              s16 slot)
+{
+        spin_lock(&osb->osb_lock);
+        osb->s_inode_steal_slot = slot;
+        spin_unlock(&osb->osb_lock);
+}
+
+static inline s16 ocfs2_get_inode_steal_slot(struct ocfs2_super *osb)
+{
+        s16 slot;
+
+        spin_lock(&osb->osb_lock);
+        slot = osb->s_inode_steal_slot;
+        spin_unlock(&osb->osb_lock);
+
+        return slot;
+}
+
 #define ocfs2_set_bit ext2_set_bit
 #define ocfs2_clear_bit ext2_clear_bit
 #define ocfs2_test_bit ext2_test_bit