| From: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, Noah Misch <noah(at)leadboat(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Subject: | Re: AIO writes vs hint bits vs checksums |
| Date: | 2025-04-01 10:34:53 |
| Message-ID: | 043c8b50-d183-46e5-b054-145cc0f6f908@iki.fi |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Here's a rebase of these patches.
The last patch, to use mprotect() to detect bad buffer accesses, needed
some changes because of AIO. I disabled the protection completely for
I/O worker processes, it was difficult to be more fine-grained than
that. I didn't test it with io_uring.
I went ahead and committed the "heapam: Only set tuple's block once per
page in pagemode" patch, because it was trivial and independent of the rest.
--
Heikki Linnakangas
Neon (https://neon.tech)
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Add-very-basic-test-for-kill_prior_tuples.patch | text/x-patch | 26.4 KB |
| 0002-heapam-Move-logic-to-handle-HEAP_MOVED-into-a-helper.patch | text/x-patch | 11.5 KB |
| 0003-bufmgr-Add-BufferLockHeldByMe.patch | text/x-patch | 2.3 KB |
| 0004-heapam-Use-exclusive-lock-on-old-page-in-CLUSTER.patch | text/x-patch | 3.2 KB |
| 0005-bufmgr-Separate-slow-fast-path-of-LockBufHdr.patch | text/x-patch | 2.7 KB |
| 0006-heapam-Add-batch-mode-mvcc-check-and-use-it-in-page-.patch | text/x-patch | 7.9 KB |
| 0007-bufmgr-Add-interface-to-acquire-right-to-set-hint-bi.patch | text/x-patch | 21.8 KB |
| 0008-heapam-Acquire-right-to-set-hint-bits.patch | text/x-patch | 8.1 KB |
| 0009-Acquire-right-to-set-hint-bits-in-the-remaining-plac.patch | text/x-patch | 6.9 KB |
| 0010-bufmgr-Don-t-copy-pages-while-writing-out.patch | text/x-patch | 9.8 KB |
| 0011-bufmgr-Detect-some-missing-BufferPrepareToSetHintBit.patch | text/x-patch | 1.5 KB |
| 0012-WIP-bufmgr-Detect-some-bad-buffer-accesses.patch | text/x-patch | 15.7 KB |
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