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Properly access a buffer's LSN using existing access macros instead of abusing

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knowledge of page layout.

Stolen from Jonah Harris' CRC patch
This commit is contained in:
Alvaro Herrera 2008-10-20 21:11:15 +00:00
parent 97227e9ec0
commit 089ae3bc9a
1 changed files with 2 additions and 2 deletions
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4
src/backend/storage/buffer/bufmgr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.238 2008/09/17 13:15:55 tgl Exp $
* $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.239 2008/10/20 21:11:15 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -48,7 +48,7 @@
/* Note: these two macros only work on shared buffers, not local ones! */
#define BufHdrGetBlock(bufHdr) ((Block) (BufferBlocks + ((Size) (bufHdr)->buf_id) * BLCKSZ))
#define BufferGetLSN(bufHdr) (*((XLogRecPtr*) BufHdrGetBlock(bufHdr)))
#define BufferGetLSN(bufHdr) (PageGetLSN(BufHdrGetBlock(bufHdr)))
/* Note: this macro only works on local buffers, not shared ones! */
#define LocalBufHdrGetBlock(bufHdr) \