[XFS] ktrace kt_lock is unused, remove it.

SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29747a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

2 files changed, 0 insertions, 5 deletions

diff --git a/fs/xfs/support/ktrace.c b/fs/xfs/support/ktrace.c
index 5cf2e86caa71..119611ec21d3 100644
--- a/fs/xfs/support/ktrace.c
+++ b/fs/xfs/support/ktrace.c
@@ -90,8 +90,6 @@ ktrace_alloc(int nentries, unsigned int __nocast sleep)
                 return NULL;
         }
 
-        spinlock_init(&(ktp->kt_lock), "kt_lock");
-
         ktp->kt_entries  = ktep;
         ktp->kt_nentries = nentries;
         ktp->kt_index    = 0;
@@ -114,8 +112,6 @@ ktrace_free(ktrace_t *ktp)
         if (ktp == (ktrace_t *)NULL)
                 return;
 
-        spinlock_destroy(&ktp->kt_lock);
-
         /*
          * Special treatment for the Vnode trace buffer.
          */
diff --git a/fs/xfs/support/ktrace.h b/fs/xfs/support/ktrace.h
index 0d73216287c0..1e6d4a38ba28 100644
--- a/fs/xfs/support/ktrace.h
+++ b/fs/xfs/support/ktrace.h
@@ -31,7 +31,6 @@ typedef struct ktrace_entry {
  * Trace buffer header structure.
  */
 typedef struct ktrace {
-        lock_t          kt_lock;        /* mutex to guard counters */
         int             kt_nentries;    /* number of entries in trace buf */
         int             kt_index;       /* current index in entries */
         int             kt_rollover;