ocfs2: Remove unused truncate function from alloc.c

Tristan Ye has done some refactoring against our truncate
process, so some functions like ocfs2_prepare_truncate and
ocfs2_free_truncate_context are no use and we'd better
remove them.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

2 files changed, 0 insertions, 78 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 8ec418dd9e3..e4984e259cb 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -565,7 +565,6 @@ static inline int ocfs2_et_sanity_check(struct ocfs2_extent_tree *et)
         return ret;
 }
 
-static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc);
 static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt,
                                          struct ocfs2_extent_block *eb);
 static void ocfs2_adjust_rightmost_records(handle_t *handle,
@@ -7142,64 +7141,6 @@ bail:
 }
 
 /*
- * Expects the inode to already be locked.
- */
-int ocfs2_prepare_truncate(struct ocfs2_super *osb,
-                           struct inode *inode,
-                           struct buffer_head *fe_bh,
-                           struct ocfs2_truncate_context **tc)
-{
-        int status;
-        unsigned int new_i_clusters;
-        struct ocfs2_dinode *fe;
-        struct ocfs2_extent_block *eb;
-        struct buffer_head *last_eb_bh = NULL;
-
-        mlog_entry_void();
-
-        *tc = NULL;
-
-        new_i_clusters = ocfs2_clusters_for_bytes(osb->sb,
-                                                  i_size_read(inode));
-        fe = (struct ocfs2_dinode *) fe_bh->b_data;
-
-        mlog(0, "fe->i_clusters = %u, new_i_clusters = %u, fe->i_size ="
-             "%llu\n", le32_to_cpu(fe->i_clusters), new_i_clusters,
-             (unsigned long long)le64_to_cpu(fe->i_size));
-
-        *tc = kzalloc(sizeof(struct ocfs2_truncate_context), GFP_KERNEL);
-        if (!(*tc)) {
-                status = -ENOMEM;
-                mlog_errno(status);
-                goto bail;
-        }
-        ocfs2_init_dealloc_ctxt(&(*tc)->tc_dealloc);
-
-        if (fe->id2.i_list.l_tree_depth) {
-                status = ocfs2_read_extent_block(INODE_CACHE(inode),
-                                                 le64_to_cpu(fe->i_last_eb_blk),
-                                                 &last_eb_bh);
-                if (status < 0) {
-                        mlog_errno(status);
-                        goto bail;
-                }
-                eb = (struct ocfs2_extent_block *) last_eb_bh->b_data;
-        }
-
-        (*tc)->tc_last_eb_bh = last_eb_bh;
-
-        status = 0;
-bail:
-        if (status < 0) {
-                if (*tc)
-                        ocfs2_free_truncate_context(*tc);
-                *tc = NULL;
-        }
-        mlog_exit_void();
-        return status;
-}
-
-/*
  * 'start' is inclusive, 'end' is not.
  */
 int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
@@ -7273,18 +7214,3 @@ out_commit:
 out:
         return ret;
 }
-
-static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc)
-{
-        /*
-         * The caller is responsible for completing deallocation
-         * before freeing the context.
-         */
-        if (tc->tc_dealloc.c_first_suballocator != NULL)
-                mlog(ML_NOTICE,
-                     "Truncate completion has non-empty dealloc context\n");
-
-        brelse(tc->tc_last_eb_bh);
-
-        kfree(tc);
-}
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 55762b554b9..3bd08a03251 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -228,10 +228,6 @@ struct ocfs2_truncate_context {
 
 int ocfs2_zero_range_for_truncate(struct inode *inode, handle_t *handle,
                                   u64 range_start, u64 range_end);
-int ocfs2_prepare_truncate(struct ocfs2_super *osb,
-                           struct inode *inode,
-                           struct buffer_head *fe_bh,
-                           struct ocfs2_truncate_context **tc);
 int ocfs2_commit_truncate(struct ocfs2_super *osb,
                           struct inode *inode,
                           struct buffer_head *di_bh);