[GFS2] Remove obsolete conversion deadlock avoidance code

This is only used by GFS1 so can be removed.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

2 files changed, 1 insertions, 24 deletions

diff --git a/fs/gfs2/locking/dlm/lock.c b/fs/gfs2/locking/dlm/lock.c
index 871ffc9578f2..894df4567a03 100644
--- a/fs/gfs2/locking/dlm/lock.c
+++ b/fs/gfs2/locking/dlm/lock.c
@@ -80,7 +80,6 @@ static void process_complete(struct gdlm_lock *lp)
 {
         struct gdlm_ls *ls = lp->ls;
         struct lm_async_cb acb;
-        s16 prev_mode = lp->cur;
 
         memset(&acb, 0, sizeof(acb));
 
@@ -160,15 +159,7 @@ static void process_complete(struct gdlm_lock *lp)
                          lp->lksb.sb_status, lp->lockname.ln_type,
                          (unsigned long long)lp->lockname.ln_number,
                          lp->flags);
-                if (lp->lksb.sb_status == -EDEADLOCK &&
-                    lp->ls->fsflags & LM_MFLAG_CONV_NODROP) {
-                        lp->req = lp->cur;
-                        acb.lc_ret |= LM_OUT_CONV_DEADLK;
-                        if (lp->cur == DLM_LOCK_IV)
-                                lp->lksb.sb_lkid = 0;
-                        goto out;
-                } else
-                        return;
+                return;
         }
 
         /*
@@ -268,10 +259,6 @@ out:
         acb.lc_name = lp->lockname;
         acb.lc_ret |= gdlm_make_lmstate(lp->cur);
 
-        if (!test_and_clear_bit(LFL_NOCACHE, &lp->flags) &&
-            (lp->cur > DLM_LOCK_NL) && (prev_mode > DLM_LOCK_NL))
-                acb.lc_ret |= LM_OUT_CACHEABLE;
-
         ls->fscb(ls->sdp, LM_CB_ASYNC, &acb);
 }
 
@@ -376,14 +363,6 @@ static inline unsigned int make_flags(struct gdlm_lock *lp,
 
         if (lp->lksb.sb_lkid != 0) {
                 lkf |= DLM_LKF_CONVERT;
-
-                /* Conversion deadlock avoidance by DLM */
-
-                if (!(lp->ls->fsflags & LM_MFLAG_CONV_NODROP) &&
-                    !test_bit(LFL_FORCE_PROMOTE, &lp->flags) &&
-                    !(lkf & DLM_LKF_NOQUEUE) &&
-                    cur > DLM_LOCK_NL && req > DLM_LOCK_NL && cur != req)
-                        lkf |= DLM_LKF_CONVDEADLK;
         }
 
         if (lp->lvb)
diff --git a/include/linux/lm_interface.h b/include/linux/lm_interface.h
index d0a7112b9719..2ed8fa1b762b 100644
--- a/include/linux/lm_interface.h
+++ b/include/linux/lm_interface.h
@@ -122,11 +122,9 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
  */
 
 #define LM_OUT_ST_MASK          0x00000003
-#define LM_OUT_CACHEABLE        0x00000004
 #define LM_OUT_CANCELED         0x00000008
 #define LM_OUT_ASYNC            0x00000080
 #define LM_OUT_ERROR            0x00000100
-#define LM_OUT_CONV_DEADLK      0x00000200
 
 /*
  * lm_callback_t types