Fix typos.

Oskari Saarenmaa

src/backend/access/transam/twophase.c

@@ -1613,7 +1613,7 @@ CheckPointTwoPhase(XLogRecPtr redo_horizon)
 	 * transaction manager isn't active.
 	 *
 	 * It's also possible to move I/O out of the lock, but on
-	 * every error we should check whether somebody commited our
+	 * every error we should check whether somebody committed our
 	 * transaction in different backend. Let's leave this optimisation
 	 * for future, if somebody will spot that this place cause
 	 * bottleneck.

src/backend/libpq/auth.c

@@ -838,7 +838,7 @@ pg_GSS_recvauth(Port *port)
 
 	/*
 	 * Loop through GSSAPI message exchange. This exchange can consist of
-	 * multiple messags sent in both directions. First message is always from
+	 * multiple messages sent in both directions. First message is always from
 	 * the client. All messages from client to server are password packets
 	 * (type 'p').
 	 */
@@ -1078,7 +1078,7 @@ pg_SSPI_recvauth(Port *port)
 
 	/*
 	 * Loop through SSPI message exchange. This exchange can consist of
-	 * multiple messags sent in both directions. First message is always from
+	 * multiple messages sent in both directions. First message is always from
 	 * the client. All messages from client to server are password packets
 	 * (type 'p').
 	 */

src/backend/optimizer/util/relnode.c

@@ -501,7 +501,7 @@ build_join_rel(PlannerInfo *root,
 	 * level.
 	 *
 	 * Note that if there are more than two rels in this relation, they could
-	 * be divided between inner_rel and outer_rel in any arbitary way.  We
+	 * be divided between inner_rel and outer_rel in any arbitrary way.  We
 	 * assume this doesn't matter, because we should hit all the same baserels
 	 * and joinclauses while building up to this joinrel no matter which we
 	 * take; therefore, we should make the same decision here however we get

src/backend/parser/parse_target.c

@@ -115,7 +115,7 @@ transformTargetEntry(ParseState *pstate,
  *
  * This code acts mostly the same for SELECT, UPDATE, or RETURNING lists;
  * the main thing is to transform the given expressions (the "val" fields).
- * The exprKind parameter distinguishes these cases when necesssary.
+ * The exprKind parameter distinguishes these cases when necessary.
  */
 List *
 transformTargetList(ParseState *pstate, List *targetlist,

src/backend/storage/buffer/bufmgr.c

@@ -113,7 +113,7 @@ int			effective_io_concurrency = 0;
 
 /*
  * GUC variables about triggering kernel writeback for buffers written; OS
- * dependant defaults are set via the GUC mechanism.
+ * dependent defaults are set via the GUC mechanism.
  */
 int			checkpoint_flush_after = 0;
 int			bgwriter_flush_after = 0;

src/backend/storage/ipc/dsm_impl.c

@@ -34,7 +34,7 @@
  * substantially, but there should be few systems where we must make do
  * with such poor tools.
  *
- * As ever, Windows requires its own implemetation.
+ * As ever, Windows requires its own implementation.
  *
  * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California

src/backend/storage/ipc/procarray.c

@@ -71,7 +71,7 @@ typedef struct ProcArrayStruct
 	 * Known assigned XIDs handling
 	 */
 	int			maxKnownAssignedXids;	/* allocated size of array */
-	int			numKnownAssignedXids;	/* currrent # of valid entries */
+	int			numKnownAssignedXids;	/* current # of valid entries */
 	int			tailKnownAssignedXids;	/* index of oldest valid element */
 	int			headKnownAssignedXids;	/* index of newest element, + 1 */
 	slock_t		known_assigned_xids_lck;		/* protects head/tail pointers */

src/backend/storage/ipc/shm_mq.c

@@ -1104,7 +1104,7 @@ shm_mq_inc_bytes_read(volatile shm_mq *mq, Size n)
 	sender = mq->mq_sender;
 	SpinLockRelease(&mq->mq_mutex);
 
-	/* We shoudn't have any bytes to read without a sender. */
+	/* We shouldn't have any bytes to read without a sender. */
 	Assert(sender != NULL);
 	SetLatch(&sender->procLatch);
 }

src/backend/utils/adt/json.c

@@ -508,7 +508,7 @@ parse_object(JsonLexContext *lex, JsonSemAction *sem)
 	 */
 	lex->lex_level++;
 
-	/* we know this will succeeed, just clearing the token */
+	/* we know this will succeed, just clearing the token */
 	lex_expect(JSON_PARSE_OBJECT_START, lex, JSON_TOKEN_OBJECT_START);
 
 	tok = lex_peek(lex);

src/backend/utils/adt/windowfuncs.c

@@ -67,7 +67,7 @@ rank_up(WindowObject winobj)
 			up = true;
 	}
 
-	/* We can advance the mark, but only *after* acccess to prior row */
+	/* We can advance the mark, but only *after* access to prior row */
 	WinSetMarkPosition(winobj, curpos);
 
 	return up;

src/backend/utils/misc/guc.c

@@ -2391,7 +2391,7 @@ static struct config_int ConfigureNamesInt[] =
 			GUC_UNIT_BLOCKS
 		},
 		&checkpoint_flush_after,
-		/* see bufmgr.h: OS dependant default */
+		/* see bufmgr.h: OS dependent default */
 		DEFAULT_CHECKPOINT_FLUSH_AFTER, 0, WRITEBACK_MAX_PENDING_FLUSHES,
 		NULL, NULL, NULL
 	},
@@ -2403,7 +2403,7 @@ static struct config_int ConfigureNamesInt[] =
 			GUC_UNIT_BLOCKS
 		},
 		&backend_flush_after,
-		/* see bufmgr.h: OS dependant default */
+		/* see bufmgr.h: OS dependent default */
 		DEFAULT_BACKEND_FLUSH_AFTER, 0, WRITEBACK_MAX_PENDING_FLUSHES,
 		NULL, NULL, NULL
 	},