Re: [PATCH v4 1/3] filemap: Add a helper for filesystems implementing dropbehind

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To: Trond Myklebust <trondmy@xxxxxxxxxx>
Subject: Re: [PATCH v4 1/3] filemap: Add a helper for filesystems implementing dropbehind
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 19 Aug 2025 07:25:37 -0700
Cc: Anna Schumaker <anna@xxxxxxxxxx>, linux-nfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Mike Snitzer <snitzer@xxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>
In-reply-to: <ee863d320994130efcccf132212ec0e23f4582ca.1755612705.git.trond.myklebust@hammerspace.com>

On Tue, Aug 19, 2025 at 07:18:30AM -0700, Trond Myklebust wrote:
> +EXPORT_SYMBOL(folio_end_dropbehind);

This really should be a EXPORT_SYMBOL_GPL like for any other linux-only
functionality. Same for the next patch.

References:
- [PATCH v4 0/3] Initial NFS client support for RWF_DONTCACHE
  - From: Trond Myklebust
- [PATCH v4 1/3] filemap: Add a helper for filesystems implementing dropbehind
  - From: Trond Myklebust

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