From: Eric Biggers <ebiggers@kernel.org>
To: Christian Brauner <brauner@kernel.org>
Cc: Jeff Layton <jlayton@kernel.org>, Jan Kara <jack@suse.com>,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Josef Bacik <josef@toxicpanda.com>,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH RFC DRAFT DOESNOTBUILD] inode: free up more space
Date: Fri, 18 Jul 2025 10:11:40 -0700 [thread overview]
Message-ID: <20250718171140.GA8845@quark> (raw)
In-Reply-To: <20250718160414.GC1574@quark>
On Fri, Jul 18, 2025 at 09:04:14AM -0700, Eric Biggers wrote:
> Doing the dereferences to get an offset stored in the inode_operations
> (or fscrypt_operations or fsverity_operations, or maybe even super_block
> which would just need one dereference rather than two?), and then doing
> the pointer arithmetic, would be faster than an indirect call. It won't
> be all that great either, but it would do.
Correction: due to inode::i_op, it takes just one dereference to get
from inode to inode_operations (as Jan pointed out elsewhere in the
thread). So that would probably be best.
- Eric
next prev parent reply other threads:[~2025-07-18 17:11 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-15 14:35 [PATCH RFC DRAFT DOESNOTBUILD] inode: free up more space Christian Brauner
2025-07-15 14:52 ` Jeff Layton
2025-07-15 16:09 ` Matthew Wilcox
2025-07-16 12:53 ` Christian Brauner
2025-07-16 13:02 ` Christoph Hellwig
2025-07-17 7:48 ` Christian Brauner
2025-07-17 7:51 ` Christoph Hellwig
2025-07-17 15:55 ` Darrick J. Wong
2025-07-16 9:15 ` Jan Kara
2025-07-16 9:50 ` Christian Brauner
2025-07-16 11:21 ` Christoph Hellwig
2025-07-16 12:19 ` Christian Brauner
2025-07-16 12:38 ` Jeff Layton
2025-07-16 14:08 ` Matthew Wilcox
2025-07-16 14:10 ` Christoph Hellwig
2025-07-17 8:32 ` Christian Brauner
2025-07-17 10:54 ` Jan Kara
2025-07-17 11:40 ` Christian Brauner
2025-07-17 11:43 ` Christoph Hellwig
2025-07-17 12:57 ` Jan Kara
2025-07-18 8:24 ` Christian Brauner
2025-07-18 8:32 ` Christoph Hellwig
2025-07-18 8:58 ` Christian Brauner
2025-07-18 16:04 ` Eric Biggers
2025-07-18 17:11 ` Eric Biggers [this message]
2025-07-21 6:14 ` Christoph Hellwig
2025-07-21 23:55 ` Eric Biggers
2025-07-22 5:49 ` Christoph Hellwig
2025-07-22 7:52 ` Jan Kara
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 00/13] Move fscrypt and fsverity out of struct inode Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 01/13] fs: add fscrypt offset Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 02/13] fs/crypto: use accessors Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 03/13] ext4: move fscrypt to filesystem inode Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 04/13] ubifs: " Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 05/13] f2fs: " Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 06/13] ceph: " Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 07/13] fs: drop i_crypt_info from struct inode Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 08/13] fs: add fsverity offset Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 09/13] fs/verity: use accessors Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 10/13] btrfs: move fsverity to filesystem inode Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 11/13] ext4: " Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 12/13] f2fs: " Christian Brauner
2025-07-22 12:57 ` [PATCH RFC DRAFT v2 13/13] fs: drop i_verity_info from struct inode Christian Brauner
2025-07-22 13:09 ` [PATCH RFC DRAFT v2 00/13] Move fscrypt and fsverity out of " Christian Brauner
2025-07-22 19:27 ` [PATCH v3 " Christian Brauner
2025-07-22 19:27 ` [PATCH v3 01/13] fs: add fscrypt offset Christian Brauner
2025-07-22 20:02 ` Eric Biggers
2025-07-23 7:48 ` Christian Brauner
2025-07-23 3:49 ` Al Viro
2025-07-22 19:27 ` [PATCH v3 02/13] fs/crypto: use accessors Christian Brauner
2025-07-22 19:27 ` [PATCH v3 03/13] ext4: move fscrypt to filesystem inode Christian Brauner
2025-07-22 20:07 ` Eric Biggers
2025-07-23 8:59 ` Christian Brauner
2025-07-22 19:27 ` [PATCH v3 04/13] ubifs: " Christian Brauner
2025-07-22 19:27 ` [PATCH v3 05/13] f2fs: " Christian Brauner
2025-07-22 19:27 ` [PATCH v3 06/13] ceph: " Christian Brauner
2025-07-22 20:14 ` Eric Biggers
2025-07-23 8:58 ` Christian Brauner
2025-07-22 19:27 ` [PATCH v3 07/13] fs: drop i_crypt_info from struct inode Christian Brauner
2025-07-22 20:19 ` Eric Biggers
2025-07-23 8:52 ` Christian Brauner
2025-07-22 19:27 ` [PATCH v3 08/13] fs: add fsverity offset Christian Brauner
2025-07-23 3:53 ` Al Viro
2025-07-22 19:27 ` [PATCH v3 09/13] fs/verity: use accessors Christian Brauner
2025-07-22 20:25 ` Eric Biggers
2025-07-23 8:55 ` Christian Brauner
2025-07-22 19:27 ` [PATCH v3 10/13] btrfs: move fsverity to filesystem inode Christian Brauner
2025-07-22 19:27 ` [PATCH v3 11/13] ext4: " Christian Brauner
2025-07-22 19:27 ` [PATCH v3 12/13] f2fs: " Christian Brauner
2025-07-22 19:27 ` [PATCH v3 13/13] fs: drop i_verity_info from struct inode Christian Brauner
2025-07-23 10:57 ` [PATCH v4 00/15] Move fscrypt and fsverity out of " Christian Brauner
2025-07-23 10:57 ` [PATCH v4 01/15] fs: add fscrypt offset Christian Brauner
2025-07-23 10:57 ` [PATCH v4 02/15] fs/crypto: use accessors Christian Brauner
2025-07-25 0:29 ` Eric Biggers
2025-07-25 4:01 ` Eric Biggers
2025-07-23 10:57 ` [PATCH v4 03/15] ext4: move fscrypt to filesystem inode Christian Brauner
2025-07-25 0:32 ` Eric Biggers
2025-07-23 10:57 ` [PATCH v4 04/15] ubifs: " Christian Brauner
2025-07-23 10:57 ` [PATCH v4 05/15] f2fs: " Christian Brauner
2025-07-23 10:57 ` [PATCH v4 06/15] ceph: " Christian Brauner
2025-07-25 0:34 ` Eric Biggers
2025-07-25 8:15 ` Christian Brauner
2025-07-23 10:57 ` [PATCH v4 07/15] fs: drop i_crypt_info from struct inode Christian Brauner
2025-07-25 0:38 ` Eric Biggers
2025-07-23 10:57 ` [PATCH v4 08/15] fscrypt: rephrase documentation and comments Christian Brauner
2025-07-25 0:35 ` Eric Biggers
2025-07-23 10:57 ` [PATCH v4 09/15] fs: add fsverity offset Christian Brauner
2025-07-25 0:45 ` Eric Biggers
2025-07-23 10:57 ` [PATCH v4 10/15] fs/verity: use accessors Christian Brauner
2025-07-23 10:57 ` [PATCH v4 11/15] btrfs: move fsverity to filesystem inode Christian Brauner
2025-07-23 10:57 ` [PATCH v4 12/15] ext4: " Christian Brauner
2025-07-23 10:57 ` [PATCH v4 13/15] f2fs: " Christian Brauner
2025-07-23 10:57 ` [PATCH v4 14/15] fs: drop i_verity_info from struct inode Christian Brauner
2025-07-25 0:43 ` Eric Biggers
2025-07-23 10:57 ` [PATCH v4 15/15] fsverity: rephrase documentation and comments Christian Brauner
2025-07-22 13:50 ` [PATCH RFC DRAFT v2 00/13] Move fscrypt and fsverity out of struct inode Jeff Layton
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