1 files changed, 36 insertions, 1 deletions

diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 37ebe36056eb..d1c4dec51a3b 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -887,6 +887,41 @@ xfs_fs_inode_init_once(
         inode_init_once((struct inode *)vnode);
 }
 
+
+/*
+ * Slab object creation initialisation for the XFS inode.
+ * This covers only the idempotent fields in the XFS inode;
+ * all other fields need to be initialised on allocation
+ * from the slab. This avoids the need to repeatedly intialise
+ * fields in the xfs inode that left in the initialise state
+ * when freeing the inode.
+ */
+void
+xfs_inode_init_once(
+        kmem_zone_t             *zone,
+        void                    *inode)
+{
+        struct xfs_inode        *ip = inode;
+
+        memset(ip, 0, sizeof(struct xfs_inode));
+        atomic_set(&ip->i_iocount, 0);
+        atomic_set(&ip->i_pincount, 0);
+        spin_lock_init(&ip->i_flags_lock);
+        INIT_LIST_HEAD(&ip->i_reclaim);
+        init_waitqueue_head(&ip->i_ipin_wait);
+        /*
+         * Because we want to use a counting completion, complete
+         * the flush completion once to allow a single access to
+         * the flush completion without blocking.
+         */
+        init_completion(&ip->i_flush);
+        complete(&ip->i_flush);
+
+        mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
+                     "xfsino", ip->i_ino);
+        mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino);
+}
+
 /*
  * Attempt to flush the inode, this will actually fail
  * if the inode is pinned, but we dirty the inode again
@@ -2018,7 +2053,7 @@ xfs_init_zones(void)
         xfs_inode_zone =
                 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
                                         KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
-                                        KM_ZONE_SPREAD, NULL);
+                                        KM_ZONE_SPREAD, xfs_inode_init_once);
         if (!xfs_inode_zone)
                 goto out_destroy_efi_zone;