[GFS2] BUG: unable to handle kernel paging request at ffff81002690e000

[safe/jmp/linux-2.6] / fs / gfs2 / trans.c

diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index f8dabf8..f677b8a 100644 (file)
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -114,11 +114,6 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
                gfs2_log_flush(sdp, NULL);
 }
 
-void gfs2_trans_add_gl(struct gfs2_glock *gl)
-{
-       lops_add(gl->gl_sbd, &gl->gl_le);
-}
-
 /**
  * gfs2_trans_add_bh - Add a to-be-modified buffer to the current transaction
  * @gl: the glock the buffer belongs to
@@ -142,39 +137,34 @@ void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta)
        lops_add(sdp, &bd->bd_le);
 }
 
-void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, u64 blkno)
+void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
 {
-       struct gfs2_revoke *rv = kmalloc(sizeof(struct gfs2_revoke),
-                                        GFP_NOFS | __GFP_NOFAIL);
-       lops_init_le(&rv->rv_le, &gfs2_revoke_lops);
-       rv->rv_blkno = blkno;
-       lops_add(sdp, &rv->rv_le);
+       BUG_ON(!list_empty(&bd->bd_le.le_list));
+       BUG_ON(!list_empty(&bd->bd_ail_st_list));
+       BUG_ON(!list_empty(&bd->bd_ail_gl_list));
+       lops_init_le(&bd->bd_le, &gfs2_revoke_lops);
+       lops_add(sdp, &bd->bd_le);
 }
 
-void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno)
+void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len)
 {
-       struct gfs2_revoke *rv;
-       int found = 0;
+       struct gfs2_bufdata *bd, *tmp;
+       struct gfs2_trans *tr = current->journal_info;
+       unsigned int n = len;
 
        gfs2_log_lock(sdp);
-
-       list_for_each_entry(rv, &sdp->sd_log_le_revoke, rv_le.le_list) {
-               if (rv->rv_blkno == blkno) {
-                       list_del(&rv->rv_le.le_list);
+       list_for_each_entry_safe(bd, tmp, &sdp->sd_log_le_revoke, bd_le.le_list) {
+               if ((bd->bd_blkno >= blkno) && (bd->bd_blkno < (blkno + len))) {
+                       list_del_init(&bd->bd_le.le_list);
                        gfs2_assert_withdraw(sdp, sdp->sd_log_num_revoke);
                        sdp->sd_log_num_revoke--;
-                       found = 1;
-                       break;
+                       kmem_cache_free(gfs2_bufdata_cachep, bd);
+                       tr->tr_num_revoke_rm++;
+                       if (--n == 0)
+                               break;
                }
        }
-
        gfs2_log_unlock(sdp);
-
-       if (found) {
-               struct gfs2_trans *tr = current->journal_info;
-               kfree(rv);
-               tr->tr_num_revoke_rm++;
-       }
 }
 
 void gfs2_trans_add_rg(struct gfs2_rgrpd *rgd)