From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: Daniel Vacek <neelx@suse.com>
Cc: Qu Wenruo <wqu@suse.com>, David Sterba <dsterba@suse.com>,
linux-fscrypt@vger.kernel.org, linux-btrfs@vger.kernel.org,
linux-kernel@vger.kernel.org,
Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Subject: Re: [PATCH v2 5/8] btrfs-progs: print encryptin type field of file extents
Date: Thu, 2 Jul 2026 16:41:18 +0930 [thread overview]
Message-ID: <1cb04346-a607-4253-add8-614de783a0f2@gmx.com> (raw)
In-Reply-To: <CAPjX3FdzjXTR7q8RjOUdu_8h6V5wkBjsUKM+=_9VV=rcg+3FdA@mail.gmail.com>
在 2026/7/2 16:35, Daniel Vacek 写道:
[...]
>>
>> A simple tree dump can always show which range is hole and which is
>> preallocated.
>
> Yeah, that's true. I'm curious how other FSes handle this. Let me see.
> Or do you know from the top of your head?
Sorry, not familiar with other fscrypt implementation at all.
You may want to try to experiment on ext4 to see how it's implemented.
I guess they do nothing special and just expose hole/prealloc info.
As the other path would be always filling hole with zero filled regular
extents (before encryption), and disable preallocation completely.
That looks over-killed and may take a lot of extra space.
next prev parent reply other threads:[~2026-07-02 7:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-24 16:51 [PATCH v2 0/8] btrfs-progs: fscrypt updates Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 1/8] btrfs-progs: check: fix max inline extent size Daniel Vacek
2026-06-25 23:40 ` Qu Wenruo
2026-07-01 15:47 ` Daniel Vacek
2026-07-01 22:22 ` Qu Wenruo
2026-07-02 5:34 ` Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 2/8] btrfs-progs: add new FEATURE_INCOMPAT_ENCRYPT flag Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 3/8] btrfs-progs: start tracking extent encryption context info Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 4/8] btrfs-progs: add inode encryption contexts Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 5/8] btrfs-progs: print encryptin type field of file extents Daniel Vacek
2026-06-25 23:50 ` Qu Wenruo
2026-07-01 15:59 ` Daniel Vacek
2026-07-01 22:26 ` Qu Wenruo
2026-07-02 5:40 ` Daniel Vacek
2026-07-02 6:19 ` Qu Wenruo
2026-07-02 6:48 ` Daniel Vacek
2026-07-02 6:56 ` Qu Wenruo
2026-07-02 7:05 ` Daniel Vacek
2026-07-02 7:11 ` Qu Wenruo [this message]
2026-07-02 7:18 ` Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 6/8] btrfs-progs: handle fscrypt context items Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 7/8] btrfs-progs: check: update inline extent length checking Daniel Vacek
2026-06-24 16:51 ` [PATCH v2 8/8] btrfs-progs: recognize ENCRYPT inode item flag Daniel Vacek
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