More tablespace.c comment improvements.

diff --git a/src/backend/commands/tablespace.c b/src/backend/commands/tablespace.c
index 08a54ebec16e6efcefe3f648aa0c71e73536f75b..88ada1bf35d1fbde0653a2c3d3a65e918cec7e8d 100644 (file)
--- a/src/backend/commands/tablespace.c
+++ b/src/backend/commands/tablespace.c
@@ -37,7 +37,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.69 2010/01/07 04:05:39 momjian Exp $
+ *       $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.70 2010/01/07 04:10:39 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -99,9 +99,8 @@ static void write_version_file(const char *path);
  * symlink would normally be.  This isn't an exact replay of course, but
  * it's the best we can do given the available information.
  *
- * If tablespaces are not supported, you might think this could be a no-op,
- * but you'd be wrong: we still need it in case we have to re-create a
- * database subdirectory (of $PGDATA/base) during WAL replay.
+ * If tablespaces are not supported, we still need it in case we have to
+ * re-create a database subdirectory (of $PGDATA/base) during WAL replay.
  */
 void
 TablespaceCreateDbspace(Oid spcNode, Oid dbNode, bool isRedo)
@@ -123,6 +122,7 @@ TablespaceCreateDbspace(Oid spcNode, Oid dbNode, bool isRedo)
 
        if (stat(dir, &st) < 0)
        {
+               /* Directory does not exist? */
                if (errno == ENOENT)
                {
                        /*
@@ -137,7 +137,7 @@ TablespaceCreateDbspace(Oid spcNode, Oid dbNode, bool isRedo)
                         */
                        if (stat(dir, &st) == 0 && S_ISDIR(st.st_mode))
                        {
-                               /* Directory was created. */
+                               /* Directory was created */
                        }
                        else
                        {
@@ -152,6 +152,7 @@ TablespaceCreateDbspace(Oid spcNode, Oid dbNode, bool isRedo)
                                                                (errcode_for_file_access(),
                                                          errmsg("could not create directory \"%s\": %m",
                                                                         dir)));
+
                                        /* Parent directory must be missing */
                                        parentdir = pstrdup(dir);
                                        get_parent_directory(parentdir);
@@ -162,6 +163,7 @@ TablespaceCreateDbspace(Oid spcNode, Oid dbNode, bool isRedo)
                                                          errmsg("could not create directory \"%s\": %m",
                                                                         parentdir)));
                                        pfree(parentdir);
+
                                        /* Create database directory */
                                        if (mkdir(dir, S_IRWXU) < 0)
                                                ereport(ERROR,
@@ -252,7 +254,7 @@ CreateTableSpace(CreateTableSpaceStmt *stmt)
         * '/<dboid>/<relid>.<nnn>'  (XXX but do we ever form the whole path
         * explicitly?  This may be overly conservative.)
         */
-       if (strlen(location) >= (MAXPGPATH - 1 - OIDCHARS - 1 - OIDCHARS - 1 - OIDCHARS))
+       if (strlen(location) >= MAXPGPATH - 1 - OIDCHARS - 1 - OIDCHARS - 1 - OIDCHARS)
                ereport(ERROR,
                                (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                                 errmsg("tablespace location \"%s\" is too long",