Fix copy-pasto with process count calculation in method_io_uring.c

This commit replaces the formula used for "TotalProcs" with a call to
pgaio_uring_procs() in pgaio_uring_shmem_init() for the shared memory
initialization, which is exactly the same, removing a duplication.

pgaio_uring_procs() is used for shared memory sizing and a sanity check,
and it has some documentation explaining some reasoning behind the
formula.

Author: Japin Li <japinli@hotmail.com>
Discussion: https://postgr.es/m/ME0P300MB044521067A1EDDA9EDEC3793B66DA@ME0P300MB0445.AUSP300.PROD.OUTLOOK.COM

diff --git a/src/backend/storage/aio/method_io_uring.c b/src/backend/storage/aio/method_io_uring.c
index c719ba2727a813aed58563f3da17f723d8a59387..cc312b641ca6f5543f6c22d456b816e199b0b8af 100644 (file)
--- a/src/backend/storage/aio/method_io_uring.c
+++ b/src/backend/storage/aio/method_io_uring.c
@@ -126,7 +126,7 @@ pgaio_uring_shmem_size(void)
 static void
 pgaio_uring_shmem_init(bool first_time)
 {
-   int         TotalProcs = MaxBackends + NUM_AUXILIARY_PROCS - MAX_IO_WORKERS;
+   int         TotalProcs = pgaio_uring_procs();
    bool        found;
 
    pgaio_uring_contexts = (PgAioUringContext *)