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Renumber CHECKPOINT_* flags.

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Commit 7dbb606938 added a new CHECKPOINT_FLUSH_ALL flag. As that
commit needed to be backpatched I didn't change the numeric values of
the existing flags as that could lead to nastly problems if any
external code issued checkpoints. That's not a concern on master, so
renumber them there.

Also add a comment about CHECKPOINT_FLUSH_ALL above
CreateCheckPoint().
This commit is contained in:
Andres Freund 2014-10-21 00:20:08 +02:00
parent 7dbb606938
commit 11abd6c90f
2 changed files with 7 additions and 6 deletions
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1
src/backend/access/transam/xlog.c
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@ -7892,6 +7892,7 @@ LogCheckpointEnd(bool restartpoint)
* CHECKPOINT_FORCE: force a checkpoint even if no XLOG activity has occurred
* since the last one (implied by CHECKPOINT_IS_SHUTDOWN or
* CHECKPOINT_END_OF_RECOVERY).
* CHECKPOINT_FLUSH_ALL: also flush buffers of unlogged tables.
*
* Note: flags contains other bits, of interest here only for logging purposes.
* In particular note that this routine is synchronous and does not pay

12
src/include/access/xlog.h
View File

@ -248,13 +248,13 @@ extern bool XLOG_DEBUG;
* recovery */
#define CHECKPOINT_IMMEDIATE 0x0004 /* Do it without delays */
#define CHECKPOINT_FORCE 0x0008 /* Force even if no activity */
/* These are important to RequestCheckpoint */
#define CHECKPOINT_WAIT 0x0010 /* Wait for completion */
/* These indicate the cause of a checkpoint request */
#define CHECKPOINT_CAUSE_XLOG 0x0020 /* XLOG consumption */
#define CHECKPOINT_CAUSE_TIME 0x0040 /* Elapsed time */
#define CHECKPOINT_FLUSH_ALL 0x0080 /* Flush all pages, including those
#define CHECKPOINT_FLUSH_ALL 0x0010 /* Flush all pages, including those
* belonging to unlogged tables */
/* These are important to RequestCheckpoint */
#define CHECKPOINT_WAIT 0x0020 /* Wait for completion */
/* These indicate the cause of a checkpoint request */
#define CHECKPOINT_CAUSE_XLOG 0x0040 /* XLOG consumption */
#define CHECKPOINT_CAUSE_TIME 0x0080 /* Elapsed time */
/* Checkpoint statistics */
typedef struct CheckpointStatsData