AioCtl Shared Memory size fix

Madhukar . <madhukarprasad@google.com>

From: "Madhukar ." <madhukarprasad@google.com>

To: pgsql-hackers@postgresql.org, Vaibhav Jain <jainva@google.com>, Sangeetha Seshadri <sangsesh@google.com>, Noah Misch <nmisch@google.com>

Date: 2025-09-15T09:31:07Z

Lists: pgsql-hackers

Attachments

patch.diff (application/octet-stream) patch

Hi Folks,

While reviewing AIO code, we found an issue with AioCtlShmemSize function.
The function was not accounting for io_handles which is used post shared
memory alloc in AioShmemInit. Please find a patch to account for
io_handles member of PgAioCtl.

The patch uses sizeof(PgAioCtl) instead of offsetof(PgAioCtl, io_handles)
in AioCtlShmemSize.

Thanks,
Madhukar

Commits

Fix shared memory calculation size of PgAioCtl
- dd74e599b8f6 18.0 landed
- 158c48303e8a 19 (unreleased) landed