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Don't use O_SYNC or similar when opening signal file to fsync it. 

No need to use get_sync_bit() when we're calling pg_fsync() on the file.
We're not writing to the files, so it doesn't make any difference in
practice, but seems less surprising this way.

Reviewed-by: Andres Freund
Discussion: https://www.postgresql.org/message-id/b3b71061-4919-e882-4857-27e370ab134a%40iki.fi
This commit is contained in:
Heikki Linnakangas 2021-07-31 09:36:11 +03:00
parent 0b8ea70758
commit e9f5a0681c
1 changed files with 2 additions and 2 deletions
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4
src/backend/access/transam/xlog.c
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@ -5484,7 +5484,7 @@ readRecoverySignalFile(void)
{ {
int fd; int fd;
fd = BasicOpenFilePerm(STANDBY_SIGNAL_FILE, O_RDWR | PG_BINARY | get_sync_bit(sync_method), fd = BasicOpenFilePerm(STANDBY_SIGNAL_FILE, O_RDWR | PG_BINARY,
S_IRUSR | S_IWUSR); S_IRUSR | S_IWUSR);
if (fd >= 0) if (fd >= 0)
{ {
@ -5497,7 +5497,7 @@ readRecoverySignalFile(void)
{ {
int fd; int fd;
fd = BasicOpenFilePerm(RECOVERY_SIGNAL_FILE, O_RDWR | PG_BINARY | get_sync_bit(sync_method), fd = BasicOpenFilePerm(RECOVERY_SIGNAL_FILE, O_RDWR | PG_BINARY,
S_IRUSR | S_IWUSR); S_IRUSR | S_IWUSR);
if (fd >= 0) if (fd >= 0)
{ {