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Groups > linux.debian.kernel > #93284

Bug#1141656: Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE

From Salvatore Bonaccorso <carnil@debian.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1141656: Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE
Date 2026-07-08 23:10 +0200
Message-ID <NeHGO-3zMt-3@gated-at.bofh.it> (permalink)
References <NerC1-3qCp-3@gated-at.bofh.it> <NerC1-3qCp-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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On Wed, Jul 08, 2026 at 11:50:10AM +0800, Gao Xiang wrote:
> Package: src:linux
> Version: 7.2~rc2-1~exp1
> Severity: wishlist
> 
> Dear Debian kernel maintainers,
> 
> Currently EROFS already ships CONFIG_EROFS_FS_PAGE_CACHE_SHARE in
> linux 7.0 as an optional feature.
> 
> since it's already shipped and users can choose to use it at runtime
> or not, I hope this feature could be enabled in Debian.
> 
> In short, I hope the debian kernels can enabled
> CONFIG_EROFS_FS_PAGE_CACHE_SHARE=y
> 
> to match the latest erofs-utils 1.9.2.

Looking at the option

| config EROFS_FS_PAGE_CACHE_SHARE
|         bool "EROFS page cache share support (experimental)"
|         depends on EROFS_FS && EROFS_FS_XATTR
|         help
|           This enables page cache sharing among inodes with identical
|           content fingerprints on the same machine.
|
|           If unsure, say N.

it is yet marked as experimental. What are reasons for which we would
already want to enable it? I'm aware I'm asking the maintainer, but
maybe we should have it documented for the request. 

Regards,
Salvatore

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Thread

Bug#1141656: Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE Gao Xiang <xiang@kernel.org> - 2026-07-08 06:00 +0200
  Processed: Re: Bug#1141656: Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-07-08 23:10 +0200
  Bug#1141656: Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE Salvatore Bonaccorso <carnil@debian.org> - 2026-07-08 23:10 +0200
    Bug#1141656: Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE Gao Xiang <xiang@kernel.org> - 2026-07-09 00:50 +0200
  Bug#1141656: marked as done (Request for enabling CONFIG_EROFS_FS_PAGE_CACHE_SHARE) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-08-12 00:40 +0200

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