linux-kernel - Re: [PATCH v2] erofs: enable large folios for iomap mode

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Message-ID: <118bb655-b645-6373-5545-4c0615bf0f74@linux.alibaba.com>
Date:   Wed, 30 Nov 2022 14:07:14 +0800
From:   Jingbo Xu <jefflexu@...ux.alibaba.com>
To:     xiang@...nel.org, chao@...nel.org, linux-erofs@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] erofs: enable large folios for iomap mode



On 11/30/22 2:04 PM, Jingbo Xu wrote:
> Enable large folios for iomap mode.  Then the readahead routine will
> pass down large folios containing multiple pages.
> 
> Let's enable this for non-compressed format for now, until the
> compression part supports large folios later.
> 
> When large folios supported, the iomap routine will allocate iomap_page
> for each large folio and thus we need iomap_release_folio() and
> iomap_invalidate_folio() to free iomap_page when these folios get
> recalimed or invalidated.      ^
  reclaimed


-- 
Thanks,
Jingbo