linux-ext4 - Re: [PATCH 16/31] fuse: implement large folios for iomap pagecache files

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Message-ID: <CAJnrk1bymmhei7X15980THz8gnQCgm2ik2nLBOWkZ3NF5MXNXA@mail.gmail.com>
Date: Fri, 23 Jan 2026 13:50:41 -0800
From: Joanne Koong <joannelkoong@...il.com>
To: "Darrick J. Wong" <djwong@...nel.org>
Cc: miklos@...redi.hu, bernd@...ernd.com, neal@...pa.dev, 
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 16/31] fuse: implement large folios for iomap pagecache files

On Tue, Oct 28, 2025 at 5:49 PM Darrick J. Wong <djwong@...nel.org> wrote:
>
> From: Darrick J. Wong <djwong@...nel.org>
>
> Use large folios when we're using iomap.
>
> Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>

Reviewed-by: Joanne Koong <joannelkoong@...il.com>
> ---
>  fs/fuse/file_iomap.c |    6 ++++++
>  1 file changed, 6 insertions(+)
>
>
> diff --git a/fs/fuse/file_iomap.c b/fs/fuse/file_iomap.c
> index 897a07f197c797..0bae356045638b 100644
> --- a/fs/fuse/file_iomap.c
> +++ b/fs/fuse/file_iomap.c
> @@ -1380,12 +1380,18 @@ static const struct address_space_operations fuse_iomap_aops = {
>  static inline void fuse_inode_set_iomap(struct inode *inode)
>  {
>         struct fuse_inode *fi = get_fuse_inode(inode);
> +       unsigned int min_order = 0;
>
>         inode->i_data.a_ops = &fuse_iomap_aops;
>
>         INIT_WORK(&fi->ioend_work, fuse_iomap_end_io);
>         INIT_LIST_HEAD(&fi->ioend_list);
>         spin_lock_init(&fi->ioend_lock);
> +
> +       if (inode->i_blkbits > PAGE_SHIFT)
> +               min_order = inode->i_blkbits - PAGE_SHIFT;
> +
> +       mapping_set_folio_min_order(inode->i_mapping, min_order);
>         set_bit(FUSE_I_IOMAP, &fi->state);
>  }
>
>