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1a44df007c
If the LSN is different, the checksum will be different, too. Ashwin Agrawal, reviewed by Michael Paquier and Kuntal Ghosh Discussion: http://postgr.es/m/CALfoeis5iqrAU-+JAN+ZzXkpPr7+-0OAGv7QUHwFn=-wDy4o4Q@mail.gmail.com
33 lines
1009 B
C
33 lines
1009 B
C
/*-------------------------------------------------------------------------
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*
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* bufmask.h
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* Definitions for buffer masking routines, used to mask certain bits
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* in a page which can be different when the WAL is generated
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* and when the WAL is applied. This is really the job of each
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* individual rmgr, but we make things easier by providing some
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* common routines to handle cases which occur in multiple rmgrs.
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*
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* Portions Copyright (c) 2016-2017, PostgreSQL Global Development Group
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*
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* src/include/access/bufmask.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef BUFMASK_H
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#define BUFMASK_H
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#include "storage/block.h"
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#include "storage/bufmgr.h"
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/* Marker used to mask pages consistently */
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#define MASK_MARKER 0
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extern void mask_page_lsn_and_checksum(Page page);
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extern void mask_page_hint_bits(Page page);
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extern void mask_unused_space(Page page);
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extern void mask_lp_flags(Page page);
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extern void mask_page_content(Page page);
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#endif
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