@@ -78,8 +78,8 @@ typedef struct ReorderBufferChange
7878 RepOriginId origin_id ;
7979
8080 /*
81- * Context data for the change, which part of the union is valid depends
82- * on action/action_internal .
81+ * Context data for the change. Which part of the union is valid depends
82+ * on action.
8383 */
8484 union
8585 {
@@ -245,7 +245,7 @@ typedef struct ReorderBufferTXN
245245 /* ---
246246 * Position in one of three lists:
247247 * * list of subtransactions if we are *known* to be subxact
248- * * list of toplevel xacts (can be am as-yet unknown subxact)
248+ * * list of toplevel xacts (can be an as-yet unknown subxact)
249249 * * list of preallocated ReorderBufferTXNs
250250 * ---
251251 */
@@ -283,7 +283,7 @@ struct ReorderBuffer
283283
284284 /*
285285 * Transactions that could be a toplevel xact, ordered by LSN of the first
286- * record bearing that xid..
286+ * record bearing that xid.
287287 */
288288 dlist_head toplevel_by_lsn ;
289289
@@ -295,7 +295,7 @@ struct ReorderBuffer
295295 ReorderBufferTXN * by_txn_last_txn ;
296296
297297 /*
298- * Callacks to be called when a transactions commits.
298+ * Callbacks to be called when a transactions commits.
299299 */
300300 ReorderBufferBeginCB begin ;
301301 ReorderBufferApplyChangeCB apply_change ;
@@ -318,7 +318,7 @@ struct ReorderBuffer
318318 * overhead we cache some unused ones here.
319319 *
320320 * The maximum number of cached entries is controlled by const variables
321- * ontop of reorderbuffer.c
321+ * on top of reorderbuffer.c
322322 */
323323
324324 /* cached ReorderBufferTXNs */
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