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code: replace most remaining uses of 'master'.

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Author: Andres Freund
Reviewed-By: David Steele
Discussion: https://postgr.es/m/20200615182235.x7lch5n6kcjq4aue@alap3.anarazel.de
This commit is contained in:
Andres Freund
2020-06-15 10:14:40 -07:00
parent 7c89f8a5b8
commit a9a4a7ad56
13 changed files with 37 additions and 33 deletions
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16
src/backend/access/transam/xlog.c
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@ -562,11 +562,12 @@ typedef struct XLogCtlInsert
char pad[PG_CACHE_LINE_SIZE];
/*
* fullPageWrites is the master copy used by all backends to determine
* whether to write full-page to WAL, instead of using process-local one.
* This is required because, when full_page_writes is changed by SIGHUP,
* we must WAL-log it before it actually affects WAL-logging by backends.
* Checkpointer sets at startup or after SIGHUP.
* fullPageWrites is the authoritative value used by all backends to
* determine whether to write full-page image to WAL. This shared value,
* instead of the process-local fullPageWrites, is required because, when
* full_page_writes is changed by SIGHUP, we must WAL-log it before it
* actually affects WAL-logging by backends. Checkpointer sets at startup
* or after SIGHUP.
*
* To read these fields, you must hold an insertion lock. To modify them,
* you must hold ALL the locks.
@ -8366,8 +8367,9 @@ GetRedoRecPtr(void)
/*
* The possibly not up-to-date copy in XlogCtl is enough. Even if we
* grabbed a WAL insertion lock to read the master copy, someone might
* update it just after we've released the lock.
* grabbed a WAL insertion lock to read the authoritative value in
* Insert->RedoRecPtr, someone might update it just after we've released
* the lock.
*/
SpinLockAcquire(&XLogCtl->info_lck);
ptr = XLogCtl->RedoRecPtr;