From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 5 May 2022 23:52:15 +0000 (-0700)
Subject: Merge tag 'folio-5.18f' of git://git.infradead.org/users/willy/pagecache
X-Git-Tag: v6.1-rc5~1447
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fe27d189e3f42e31d3c8223d5daed7285e334c5e;p=platform%2Fkernel%2Flinux-starfive.git

Merge tag 'folio-5.18f' of git://git.infradead.org/users/willy/pagecache

Pull folio fixes from Matthew Wilcox:
 "Two folio fixes for 5.18.

  Darrick and Brian have done amazing work debugging the race I created
  in the folio BIO iterator. The readahead problem was deterministic, so
  easy to fix.

   - Fix a race when we were calling folio_next() in the BIO folio iter
     without holding a reference, meaning the folio could be split or
     freed, and we'd jump to the next page instead of the intended next
     folio.

   - Fix readahead creating single-page folios instead of the intended
     large folios when doing reads that are not a power of two in size"

* tag 'folio-5.18f' of git://git.infradead.org/users/willy/pagecache:
  mm/readahead: Fix readahead with large folios
  block: Do not call folio_next() on an unreferenced folio
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fe27d189e3f42e31d3c8223d5daed7285e334c5e