diff options
Diffstat (limited to 'src/backend/utils/misc/guc.c')
| -rw-r--r-- | src/backend/utils/misc/guc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c index e9f542cfedd..d14ea851847 100644 --- a/src/backend/utils/misc/guc.c +++ b/src/backend/utils/misc/guc.c @@ -2649,10 +2649,11 @@ static struct config_int ConfigureNamesInt[] = }, &effective_io_concurrency, #ifdef USE_PREFETCH - 1, 0, MAX_IO_CONCURRENCY, + 1, #else - 0, 0, 0, + 0, #endif + 0, MAX_IO_CONCURRENCY, check_effective_io_concurrency, assign_effective_io_concurrency, NULL }, @@ -10709,6 +10710,11 @@ check_effective_io_concurrency(int *newval, void **extra, GucSource source) else return false; #else + if (*newval != 0) + { + GUC_check_errdetail("effective_io_concurrency must be set to 0 on platforms that lack posix_fadvise()"); + return false; + } return true; #endif /* USE_PREFETCH */ } |