More than 30 callers of ocfs2_read_block() pass exactly OCFS2_BH_CACHED.
Only six pass a different flag set.  Rather than have every caller care,
let's make ocfs2_read_block() take no flags and always do a cached read.
The remaining six places can call ocfs2_read_blocks() directly.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
 
        if (last_eb_blk) {
                retval = ocfs2_read_block(inode, last_eb_blk,
-                                         &eb_bh, OCFS2_BH_CACHED);
+                                         &eb_bh);
                if (retval < 0) {
                        mlog_errno(retval);
                        goto bail;
                brelse(bh);
                bh = NULL;
 
-               status = ocfs2_read_block(inode, blkno, &bh, OCFS2_BH_CACHED);
+               status = ocfs2_read_block(inode, blkno, &bh);
                if (status < 0) {
                        mlog_errno(status);
                        goto bail;
 
                brelse(bh);
                bh = NULL;
-               ret = ocfs2_read_block(inode, blkno, &bh, OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, blkno, &bh);
                if (ret) {
                        mlog_errno(ret);
                        goto out;
                 * ocfs2_figure_insert_type() and ocfs2_add_branch()
                 * may want it later.
                 */
-               ret = ocfs2_read_block(inode,
-                                      ocfs2_et_get_last_eb_blk(et), &bh,
-                                      OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, ocfs2_et_get_last_eb_blk(et), &bh);
                if (ret) {
                        mlog_exit(ret);
                        goto out;
        if (path->p_tree_depth) {
                struct ocfs2_extent_block *eb;
 
-               ret = ocfs2_read_block(inode,
-                                      ocfs2_et_get_last_eb_blk(et),
-                                      &last_eb_bh, OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, ocfs2_et_get_last_eb_blk(et),
+                                      &last_eb_bh);
                if (ret) {
                        mlog_exit(ret);
                        goto out;
 
        depth = path->p_tree_depth;
        if (depth > 0) {
-               ret = ocfs2_read_block(inode,
-                                      ocfs2_et_get_last_eb_blk(et),
-                                      &last_eb_bh, OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, ocfs2_et_get_last_eb_blk(et),
+                                      &last_eb_bh);
                if (ret < 0) {
                        mlog_errno(ret);
                        goto out;
                goto bail;
        }
 
-       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh,
-                                 OCFS2_BH_CACHED);
+       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh);
        if (status < 0) {
                iput(inode);
                mlog_errno(status);
 
        if (fe->id2.i_list.l_tree_depth) {
                status = ocfs2_read_block(inode, le64_to_cpu(fe->i_last_eb_blk),
-                                         &last_eb_bh, OCFS2_BH_CACHED);
+                                         &last_eb_bh);
                if (status < 0) {
                        mlog_errno(status);
                        goto bail;
 
                goto bail;
        }
 
-       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
-                                 &bh, OCFS2_BH_CACHED);
+       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
        BUG_ON(!PageLocked(page));
        BUG_ON(!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL));
 
-       ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh,
-                              OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
 
 
 static inline int ocfs2_read_block(struct inode               *inode,
                                   u64                  off,
-                                  struct buffer_head **bh,
-                                  int                  flags);
+                                  struct buffer_head **bh);
 
 int ocfs2_write_block(struct ocfs2_super          *osb,
                      struct buffer_head  *bh,
 #define OCFS2_BH_READAHEAD         8
 
 static inline int ocfs2_read_block(struct inode *inode, u64 off,
-                                  struct buffer_head **bh, int flags)
+                                  struct buffer_head **bh)
 {
        int status = 0;
 
                goto bail;
        }
 
-       status = ocfs2_read_blocks(inode, off, 1, bh, flags);
+       status = ocfs2_read_blocks(inode, off, 1, bh, OCFS2_BH_CACHED);
 
 bail:
        return status;
 
        struct ocfs2_dinode *di;
        struct ocfs2_inline_data *data;
 
-       ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh,
-                              OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
        struct ocfs2_dinode *di;
        struct ocfs2_inline_data *data;
 
-       ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno,
-                              &di_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
        struct ocfs2_inline_data *data;
        struct ocfs2_dir_entry *de;
 
-       ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
-                              &di_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
        if (ret) {
                mlog(ML_ERROR, "Unable to read inode block for dir %llu\n",
                     (unsigned long long)OCFS2_I(inode)->ip_blkno);
 
        } else {
                /* Boo, we have to go to disk. */
                /* read bh, cast, ocfs2_refresh_inode */
-               status = ocfs2_read_block(inode, oi->ip_blkno,
-                                         bh, OCFS2_BH_CACHED);
+               status = ocfs2_read_block(inode, oi->ip_blkno, bh);
                if (status < 0) {
                        mlog_errno(status);
                        goto bail_refresh;
                return 0;
        }
 
-       status = ocfs2_read_block(inode,
-                                 OCFS2_I(inode)->ip_blkno,
-                                 ret_bh,
-                                 OCFS2_BH_CACHED);
+       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, ret_bh);
        if (status < 0)
                mlog_errno(status);
 
 
        struct ocfs2_extent_block *eb;
        struct ocfs2_extent_list *el;
 
-       ret = ocfs2_read_block(inode, last_eb_blk,
-                              &eb_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, last_eb_blk, &eb_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
 
                ret = ocfs2_read_block(inode,
                                       le64_to_cpu(eb->h_next_leaf_blk),
-                                      &next_eb_bh, OCFS2_BH_CACHED);
+                                      &next_eb_bh);
                if (ret) {
                        mlog_errno(ret);
                        goto out;
        if (ret == 0)
                goto out;
 
-       ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
-                              &di_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
 
         */
        BUG_ON(mark_unwritten && !ocfs2_sparse_alloc(osb));
 
-       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh,
-                                 OCFS2_BH_CACHED);
+       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh);
        if (status < 0) {
                mlog_errno(status);
                goto leave;
        struct buffer_head *bh = NULL;
        struct ocfs2_inode_info *oi = OCFS2_I(inode);
 
-       ret = ocfs2_read_block(inode, oi->ip_blkno, &bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, oi->ip_blkno, &bh);
        if (ret < 0) {
                mlog_errno(ret);
                goto out;
 
        if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
                ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
-                                      &di_bh, OCFS2_BH_CACHED);
+                                      &di_bh);
                if (ret) {
                        mlog_errno(ret);
                        goto out;
 
        }
 
        if (can_lock)
-               status = ocfs2_read_block(inode, args->fi_blkno, &bh, 0);
+               status = ocfs2_read_blocks(inode, args->fi_blkno, 1, &bh, 0);
        else
                status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
        if (status < 0) {
                goto fail;
        }
 
-       tmperr = ocfs2_read_block(inode, p_blkno, &bh, readflags);
+       tmperr = ocfs2_read_blocks(inode, p_blkno, 1, &bh, readflags);
        if (tmperr < 0)
                goto fail;
 
 
        }
        SET_INODE_JOURNAL(inode);
 
-       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, bh, 0);
+       status = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1, bh, 0);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
 
                goto bail;
        }
 
-       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
-                                 &alloc_bh, 0);
+       status = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1,
+                                  &alloc_bh, 0);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
 
        mutex_lock(&inode->i_mutex);
 
-       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
-                                 &alloc_bh, 0);
+       status = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1,
+                                  &alloc_bh, 0);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
 
 
        status = ocfs2_read_block(orphan_dir_inode,
                                  OCFS2_I(orphan_dir_inode)->ip_blkno,
-                                 &orphan_dir_bh, OCFS2_BH_CACHED);
+                                 &orphan_dir_bh);
        if (status < 0) {
                mlog_errno(status);
                goto leave;
 
        lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
                                              first_new_cluster - 1);
 
-       ret = ocfs2_read_block(main_bm_inode, lgd_blkno, &group_bh,
-                              OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(main_bm_inode, lgd_blkno, &group_bh);
        if (ret < 0) {
                mlog_errno(ret);
                goto out_unlock;
 
                     (unsigned long long)blkno);
 
                bh = NULL;  /* Acquire a fresh bh */
-               status = ocfs2_read_block(si->si_inode, blkno, &bh, 0);
+               status = ocfs2_read_blocks(si->si_inode, blkno, 1, &bh, 0);
                if (status < 0) {
                        mlog_errno(status);
                        goto bail;
 
        struct ocfs2_group_desc *gd;
        struct inode *alloc_inode = ac->ac_inode;
 
-       ret = ocfs2_read_block(alloc_inode, gd_blkno,
-                              &group_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(alloc_inode, gd_blkno, &group_bh);
        if (ret < 0) {
                mlog_errno(ret);
                return ret;
 
        status = ocfs2_read_block(alloc_inode,
                                  le64_to_cpu(cl->cl_recs[chain].c_blkno),
-                                 &group_bh, OCFS2_BH_CACHED);
+                                 &group_bh);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
                prev_group_bh = group_bh;
                group_bh = NULL;
                status = ocfs2_read_block(alloc_inode,
-                                         next_group, &group_bh,
-                                         OCFS2_BH_CACHED);
+                                         next_group, &group_bh);
                if (status < 0) {
                        mlog_errno(status);
                        goto bail;
             (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno, count,
             (unsigned long long)bg_blkno, start_bit);
 
-       status = ocfs2_read_block(alloc_inode, bg_blkno, &group_bh,
-                                 OCFS2_BH_CACHED);
+       status = ocfs2_read_block(alloc_inode, bg_blkno, &group_bh);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
 
 
        mlog_entry_void();
 
-       status = ocfs2_read_block(inode,
-                                 OCFS2_I(inode)->ip_blkno,
-                                 bh,
-                                 OCFS2_BH_CACHED);
+       status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, bh);
        if (status < 0) {
                mlog_errno(status);
                link = ERR_PTR(status);
 
        if (!di->i_xattr_loc)
                return ret;
 
-       ret = ocfs2_read_block(inode,
-                              le64_to_cpu(di->i_xattr_loc),
-                              &blk_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
        if (ret < 0) {
                mlog_errno(ret);
                return ret;
                blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
                /* Copy ocfs2_xattr_value */
                for (i = 0; i < num_clusters * bpc; i++, blkno++) {
-                       ret = ocfs2_read_block(inode, blkno,
-                                              &bh, OCFS2_BH_CACHED);
+                       ret = ocfs2_read_block(inode, blkno, &bh);
                        if (ret) {
                                mlog_errno(ret);
                                goto out;
 
        memset(&xs->bucket, 0, sizeof(xs->bucket));
 
-       ret = ocfs2_read_block(inode,
-                              le64_to_cpu(di->i_xattr_loc),
-                              &blk_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
        if (ret < 0) {
                mlog_errno(ret);
                return ret;
                blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
 
                for (i = 0; i < num_clusters * bpc; i++, blkno++) {
-                       ret = ocfs2_read_block(inode, blkno,
-                                              &bh, OCFS2_BH_CACHED);
+                       ret = ocfs2_read_block(inode, blkno, &bh);
                        if (ret) {
                                mlog_errno(ret);
                                goto out_commit;
        u64 blk, bg_blkno;
        u16 bit;
 
-       ret = ocfs2_read_block(inode, block, &blk_bh,
-                              OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, block, &blk_bh);
        if (ret < 0) {
                mlog_errno(ret);
                goto out;
        if (!di->i_xattr_loc)
                return ret;
 
-       ret = ocfs2_read_block(inode,
-                              le64_to_cpu(di->i_xattr_loc),
-                              &blk_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
        if (ret < 0) {
                mlog_errno(ret);
                return ret;
                        break;
                }
 
-               ret = ocfs2_read_block(inode,
-                                      header_bh->b_blocknr + block_off,
-                                      &name_bh, OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, header_bh->b_blocknr + block_off,
+                                      &name_bh);
                if (ret) {
                        mlog_errno(ret);
                        break;
        u32 last_hash;
        u64 blkno;
 
-       ret = ocfs2_read_block(inode, p_blkno, &bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, p_blkno, &bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
 
                blkno = p_blkno + bucket * blk_per_bucket;
 
-               ret = ocfs2_read_block(inode, blkno, &bh, OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, blkno, &bh);
                if (ret) {
                        mlog_errno(ret);
                        goto out;
        u64 blkno = bucket->bhs[0]->b_blocknr;
        u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
        u16 xh_free_start;
-       struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
        size_t blocksize = inode->i_sb->s_blocksize;
        handle_t *handle;
        struct buffer_head **bhs;
                        goto out;
                }
 
-               ret = ocfs2_read_block(inode, prev_blkno,
-                                      &old_bh, OCFS2_BH_CACHED);
+               ret = ocfs2_read_block(inode, prev_blkno, &old_bh);
                if (ret < 0) {
                        mlog_errno(ret);
                        brelse(new_bh);
        ocfs2_journal_dirty(handle, first_bh);
 
        /* update the new bucket header. */
-       ret = ocfs2_read_block(inode, to_blk_start, &bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, to_blk_start, &bh);
        if (ret < 0) {
                mlog_errno(ret);
                goto out;
                goto out;
        }
 
-       ret = ocfs2_read_block(inode, p_blkno,
-                              &first_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, p_blkno, &first_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;
        BUG_ON(value_blk != (offset + OCFS2_XATTR_ROOT_SIZE - 1) / blocksize);
        value_blk += header_bh->b_blocknr;
 
-       ret = ocfs2_read_block(inode, value_blk,
-                              &value_bh, OCFS2_BH_CACHED);
+       ret = ocfs2_read_block(inode, value_blk, &value_bh);
        if (ret) {
                mlog_errno(ret);
                goto out;