Fix spelling errors and typos in comments

Author: Daniel Gustafsson <daniel@yesql.se>

src/backend/access/nbtree/nbtsearch.c

@@ -184,7 +184,7 @@ _bt_search(Relation rel, int keysz, ScanKey scankey, bool nextkey,
 
 	/*
 	 * If we're asked to lock leaf in write mode, but didn't manage to, then
-	 * relock.  That may happend when root page appears to be leaf.
+	 * relock.  That may happen when the root page appears to be leaf.
 	 */
 	if (access == BT_WRITE && page_access == BT_READ)
 	{

src/backend/access/transam/xact.c

@@ -487,7 +487,7 @@ AssignTransactionId(TransactionState s)
 
 	/*
 	 * Ensure parent(s) have XIDs, so that a child always has an XID later
-	 * than its parent.  Musn't recurse here, or we might get a stack overflow
+	 * than its parent.  Mustn't recurse here, or we might get a stack overflow
 	 * if we're at the bottom of a huge stack of subtransactions none of which
 	 * have XIDs yet.
 	 */

src/backend/commands/tablecmds.c

@@ -834,7 +834,7 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId,
 		if (OidIsValid(defaultPartOid))
 			defaultRel = heap_open(defaultPartOid, AccessExclusiveLock);
 
-		/* Tranform the bound values */
+		/* Transform the bound values */
 		pstate = make_parsestate(NULL);
 		pstate->p_sourcetext = queryString;
 

src/backend/executor/execExprInterp.c

@@ -1622,7 +1622,7 @@ ExecInterpExpr(ExprState *state, ExprContext *econtext, bool *isnull)
 
 		/*
 		 * Evaluate aggregate transition / combine function that has a
-		 * by-value transition type. That's a seperate case from the
+		 * by-value transition type. That's a separate case from the
 		 * by-reference implementation because it's a bit simpler.
 		 */
 		EEO_CASE(EEOP_AGG_PLAIN_TRANS_BYVAL)

src/backend/executor/execPartition.c

@@ -852,7 +852,7 @@ ExecCleanupTupleRouting(ModifyTableState *mtstate,
 	{
 		ResultRelInfo *resultRelInfo = proute->partitions[i];
 
-		/* skip further processsing for uninitialized partitions */
+		/* skip further processing for uninitialized partitions */
 		if (resultRelInfo == NULL)
 			continue;
 

src/backend/jit/llvm/llvmjit.c

@@ -438,7 +438,7 @@ llvm_optimize_module(LLVMJitContext *context, LLVMModuleRef module)
 
 	if (context->base.flags & PGJIT_OPT3)
 	{
-		/* TODO: Unscientifically determined threshhold */
+		/* TODO: Unscientifically determined threshold */
 		LLVMPassManagerBuilderUseInlinerWithThreshold(llvm_pmb, 512);
 	}
 	else
@@ -853,7 +853,7 @@ llvm_split_symbol_name(const char *name, char **modname, char **funcname)
 	{
 		/*
 		 * Symbol names cannot contain a ., therefore we can split based on
-		 * first and last occurance of one.
+		 * first and last occurrence of one.
 		 */
 		*funcname = rindex(name, '.');
 		(*funcname)++;			/* jump over . */

src/backend/optimizer/plan/createplan.c

@@ -65,7 +65,7 @@
  * and Group, which need these values to be available in their inputs.
  *
  * CP_IGNORE_TLIST specifies that the caller plans to replace the targetlist,
- * and therefore it doens't matter a bit what target list gets generated.
+ * and therefore it doesn't matter a bit what target list gets generated.
  */
 #define CP_EXACT_TLIST		0x0001	/* Plan must return specified tlist */
 #define CP_SMALL_TLIST		0x0002	/* Prefer narrower tlists */

src/backend/port/tas/sunstudio_sparc.s

@@ -26,7 +26,7 @@
 pg_atomic_cas:
 
 	! "cas" only works on sparcv9 and sparcv8plus chips, and
-	! requies a compiler targeting these CPUs.  It will fail
+	! requires a compiler targeting these CPUs.  It will fail
 	! on a compiler targeting sparcv8, and of course will not
 	! be understood by a sparcv8 CPU.  gcc continues to use
 	! "ldstub" because it targets sparcv7.

src/backend/storage/ipc/dsm.c

@@ -429,7 +429,7 @@ dsm_set_control_handle(dsm_handle h)
  * If there is a non-NULL CurrentResourceOwner, the new segment is associated
  * with it and must be detached before the resource owner releases, or a
  * warning will be logged.  If CurrentResourceOwner is NULL, the segment
- * remains attached until explicitely detached or the session ends.
+ * remains attached until explicitly detached or the session ends.
  * Creating with a NULL CurrentResourceOwner is equivalent to creating
  * with a non-NULL CurrentResourceOwner and then calling dsm_pin_mapping.
  */
@@ -527,7 +527,7 @@ dsm_create(Size size, int flags)
  * If there is a non-NULL CurrentResourceOwner, the attached segment is
  * associated with it and must be detached before the resource owner releases,
  * or a warning will be logged.  Otherwise the segment remains attached until
- * explicitely detached or the session ends.  See the note atop dsm_create().
+ * explicitly detached or the session ends.  See the note atop dsm_create().
  */
 dsm_segment *
 dsm_attach(dsm_handle h)

src/backend/storage/ipc/latch.c

@@ -1030,7 +1030,7 @@ WaitEventSetWait(WaitEventSet *set, long timeout,
 /*
  * Wait using linux's epoll_wait(2).
  *
- * This is the preferrable wait method, as several readiness notifications are
+ * This is the preferable wait method, as several readiness notifications are
  * delivered, without having to iterate through all of set->events. The return
  * epoll_event struct contain a pointer to our events, making association
  * easy.

src/backend/utils/adt/formatting.c

@@ -3706,7 +3706,7 @@ to_timestamp(PG_FUNCTION_ARGS)
 
 /* ----------
  * TO_DATE
- *	Make Date from date_str which is formated at argument 'fmt'
+ *	Make Date from date_str which is formatted at argument 'fmt'
  * ----------
  */
 Datum

src/backend/utils/adt/jsonb_util.c

@@ -1363,7 +1363,7 @@ compareJsonbScalarValue(JsonbValue *aScalar, JsonbValue *bScalar)
 
 
 /*
- * Functions for manipulating the resizeable buffer used by convertJsonb and
+ * Functions for manipulating the resizable buffer used by convertJsonb and
  * its subroutines.
  */
 

src/backend/utils/adt/jsonfuncs.c

@@ -5040,7 +5040,7 @@ iterate_jsonb_values(Jsonb *jb, uint32 flags, void *state,
 
 	/*
 	 * Just recursively iterating over jsonb and call callback on all
-	 * correspoding elements
+	 * corresponding elements
 	 */
 	while ((type = JsonbIteratorNext(&it, &v, false)) != WJB_DONE)
 	{

src/backend/utils/cache/attoptcache.c

@@ -24,7 +24,7 @@
 #include "utils/syscache.h"
 
 
-/* Hash table for informations about each attribute's options */
+/* Hash table for information about each attribute's options */
 static HTAB *AttoptCacheHash = NULL;
 
 /* attrelid and attnum form the lookup key, and must appear first */

src/backend/utils/cache/relfilenodemap.c

@@ -29,7 +29,7 @@
 #include "utils/relfilenodemap.h"
 #include "utils/relmapper.h"
 
-/* Hash table for informations about each relfilenode <-> oid pair */
+/* Hash table for information about each relfilenode <-> oid pair */
 static HTAB *RelfilenodeMapHash = NULL;
 
 /* built first time through in InitializeRelfilenodeMap */

src/backend/utils/cache/typcache.c

@@ -1869,7 +1869,7 @@ assign_record_type_identifier(Oid type_id, int32 typmod)
 }
 
 /*
- * Return the amout of shmem required to hold a SharedRecordTypmodRegistry.
+ * Return the amount of shmem required to hold a SharedRecordTypmodRegistry.
  * This exists only to avoid exposing private innards of
  * SharedRecordTypmodRegistry in a header.
  */