database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-05-21 15:54:08 +03:00
Code

Use 0-based numbering in comments about backup blocks.

Browse Source 
The macros and functions that work with backup blocks in the redo function
use 0-based numbering, so let's use that consistently in the function that
generates the records too. Makes it so much easier to compare the
generation and replay functions.

Backpatch to 9.0, where we switched from 1-based to 0-based numbering.
This commit is contained in:
Heikki Linnakangas 2014-05-19 13:21:59 +03:00
parent 0d4c75f4de
commit 0128a7712d
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/backend/access/nbtree/nbtinsert.c
View File

@ -1221,7 +1221,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
item = (IndexTuple) PageGetItem(origpage, itemid); item = (IndexTuple) PageGetItem(origpage, itemid);
lastrdata->data = (char *) item; lastrdata->data = (char *) item;
lastrdata->len = MAXALIGN(IndexTupleSize(item)); lastrdata->len = MAXALIGN(IndexTupleSize(item));
lastrdata->buffer = buf; /* backup block 1 */ lastrdata->buffer = buf; /* backup block 0 */
lastrdata->buffer_std = true; lastrdata->buffer_std = true;
} }
@ -1248,7 +1248,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
lastrdata->data = (char *) newitem; lastrdata->data = (char *) newitem;
lastrdata->len = MAXALIGN(newitemsz); lastrdata->len = MAXALIGN(newitemsz);
lastrdata->buffer = buf; /* backup block 1 */ lastrdata->buffer = buf; /* backup block 0 */
lastrdata->buffer_std = true; lastrdata->buffer_std = true;
} }
else if (ropaque->btpo.level == 0) else if (ropaque->btpo.level == 0)
@ -1257,14 +1257,14 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
* Although we don't need to WAL-log the new item, we still need * Although we don't need to WAL-log the new item, we still need
* XLogInsert to consider storing a full-page image of the left * XLogInsert to consider storing a full-page image of the left
* page, so make an empty entry referencing that buffer. This also * page, so make an empty entry referencing that buffer. This also
* ensures that the left page is always backup block 1. * ensures that the left page is always backup block 0.
*/ */
lastrdata->next = lastrdata + 1; lastrdata->next = lastrdata + 1;
lastrdata++; lastrdata++;
lastrdata->data = NULL; lastrdata->data = NULL;
lastrdata->len = 0; lastrdata->len = 0;
lastrdata->buffer = buf; /* backup block 1 */ lastrdata->buffer = buf; /* backup block 0 */
lastrdata->buffer_std = true; lastrdata->buffer_std = true;
} }
@ -1297,7 +1297,7 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
lastrdata->data = NULL; lastrdata->data = NULL;
lastrdata->len = 0; lastrdata->len = 0;
lastrdata->buffer = sbuf; /* backup block 2 */ lastrdata->buffer = sbuf; /* backup block 1 */
lastrdata->buffer_std = true; lastrdata->buffer_std = true;
} }