1 files changed, 6 insertions, 10 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 9cc8f0213095..986061ae1b9b 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -58,7 +58,7 @@ xfs_buf_trace(
                 bp, id,
                 (void *)(unsigned long)bp->b_flags,
                 (void *)(unsigned long)bp->b_hold.counter,
-                (void *)(unsigned long)bp->b_sema.count.counter,
+                (void *)(unsigned long)bp->b_sema.count,
                 (void *)current,
                 data, ra,
                 (void *)(unsigned long)((bp->b_file_offset>>32) & 0xffffffff),
@@ -253,7 +253,7 @@ _xfs_buf_initialize(
 
         memset(bp, 0, sizeof(xfs_buf_t));
         atomic_set(&bp->b_hold, 1);
-        init_MUTEX_LOCKED(&bp->b_iodonesema);
+        init_completion(&bp->b_iowait);
         INIT_LIST_HEAD(&bp->b_list);
         INIT_LIST_HEAD(&bp->b_hash_list);
         init_MUTEX_LOCKED(&bp->b_sema); /* held, no waiters */
@@ -838,6 +838,7 @@ xfs_buf_rele(
                 return;
         }
 
+        ASSERT(atomic_read(&bp->b_hold) > 0);
         if (atomic_dec_and_lock(&bp->b_hold, &hash->bh_lock)) {
                 if (bp->b_relse) {
                         atomic_inc(&bp->b_hold);
@@ -851,11 +852,6 @@ xfs_buf_rele(
                         spin_unlock(&hash->bh_lock);
                         xfs_buf_free(bp);
                 }
-        } else {
-                /*
-                 * Catch reference count leaks
-                 */
-                ASSERT(atomic_read(&bp->b_hold) >= 0);
         }
 }
 
@@ -1037,7 +1033,7 @@ xfs_buf_ioend(
                         xfs_buf_iodone_work(&bp->b_iodone_work);
                 }
         } else {
-                up(&bp->b_iodonesema);
+                complete(&bp->b_iowait);
         }
 }
 
@@ -1275,7 +1271,7 @@ xfs_buf_iowait(
         XB_TRACE(bp, "iowait", 0);
         if (atomic_read(&bp->b_io_remaining))
                 blk_run_address_space(bp->b_target->bt_mapping);
-        down(&bp->b_iodonesema);
+        wait_for_completion(&bp->b_iowait);
         XB_TRACE(bp, "iowaited", (long)bp->b_error);
         return bp->b_error;
 }
@@ -1799,7 +1795,7 @@ int __init
 xfs_buf_init(void)
 {
 #ifdef XFS_BUF_TRACE
-        xfs_buf_trace_buf = ktrace_alloc(XFS_BUF_TRACE_SIZE, KM_SLEEP);
+        xfs_buf_trace_buf = ktrace_alloc(XFS_BUF_TRACE_SIZE, KM_NOFS);
 #endif
 
         xfs_buf_zone = kmem_zone_init_flags(sizeof(xfs_buf_t), "xfs_buf",