[30.x] Finalise 30.4 #36664

1. 
   fanquake commented at 1:25 PM on October 26, 2026: member

   Backports:

   • #36665
   • #36667
   • #36669
2. fanquake added this to the milestone 30.4 on Oct 26, 2026
3. DrahtBot added the label Backport on Oct 26, 2026
4. 
   DrahtBot commented at 1:25 PM on October 26, 2026: contributor

   <!--e57a25ab6845829454e8d69fc972939a-->

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   <!--006a51241073e994b41acfe9ec718e94-->

   External sites

   • Code coverage & benchmarks: https://corecheck.dev/bitcoin/bitcoin/pulls/36664
   • Ralph review <img src=https://review.fish.foo/assets/bitcoin/bitcoin/36664.png alt="Ralph review status"> https://git.fish.foo/bitcoin/bitcoin/pulls/36664#author-ralph

   <!--021abf342d371248e50ceaed478a90ca-->

   Reviews

   See the guideline and AI policy for information on the review process.

   Type	Reviewers
   ACK	l0rinc, willcl-ark

   If your review is incorrectly listed, please copy-paste <code>&lt;!--meta-tag:bot-skip--&gt;</code> into the comment that the bot should ignore.

   <!--5faf32d7da4f0f540f40219e4f7537a3-->

5. build: bump version to v30.4 897b2c0bdb
6. doc: update manual pages for v30.4 298eac1c4b
7. sock: align exception monitoring between poll() and select() backends

   Github-Pull: #36665
   Rebased-From: 1e0c407377034e9cbb4d52f1f534c06cdf202a36

   d4a065bf0f
8. fanquake force-pushed on Oct 26, 2026
9. net: enforce timeout interval for paused send peers

   No need to waste a connection slot on a peer that is so slow to read as to not
   drain our send buffer down to the 1MB threshold within 20 minutes.
   
   Github-Pull: #36667
   Rebased-From: cc2534cdf7b14d0f1a18928ebaab7f7fdd7e839e

   96b5372176
10. flatfile: store position as a 64 bits integer

    This is the last field that is only bounded by the usage callers make of it
    (unlike the file number, for instance). Promoting it to a 64 bits integer also
    does not change on-disk representation since we serialize positions as varints.
    Therefore, widen them to prevent any possible future misuse.
    
    Github-Pull: #36669
    Rebased-From: 17556cb1f52fcbc807f65245101f72e8ec1573d8

    adb363c753
11. flatfile: use 64-bit file positioning syscalls in Windows

    Github-Pull: #36669
    Rebased-From: 48092a9042d8fcfd6bb7ae5911a1d53b8746d546

    a9e7b35d06
12. doc: update release notes for v30.4 4186320bb3
13. fanquake force-pushed on Oct 26, 2026
14. fanquake marked this as ready for review on Oct 26, 2026
15. 
    l0rinc commented at 6:30 PM on October 26, 2026: contributor

    ACK 4186320bb3fa98f60c7e6f26683bf628fcbfb591

    Reviewed cherry-picks manually and checked the remaining commits automatically - similar to the v31 backport, except the the file-position fields are in different headers here

16. willcl-ark approved
17. 
    willcl-ark commented at 6:34 PM on October 26, 2026: member

    ACK 4186320bb3fa98f60c7e6f26683bf628fcbfb591

    Backports are faithful.

Milestone
30.4