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Message-ID: <20260122212316.GC5910@frogsfrogsfrogs>
Date: Thu, 22 Jan 2026 13:23:16 -0800
From: "Darrick J. Wong" <djwong@...nel.org>
To: Christoph Hellwig <hch@....de>
Cc: Eric Biggers <ebiggers@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
David Sterba <dsterba@...e.com>, Theodore Ts'o <tytso@....edu>,
Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <chao@...nel.org>,
Andrey Albershteyn <aalbersh@...hat.com>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
linux-fsdevel@...r.kernel.org, linux-btrfs@...r.kernel.org,
linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
fsverity@...ts.linux.dev
Subject: Re: [PATCH 03/11] fsverity: pass struct file to
->write_merkle_tree_block
On Thu, Jan 22, 2026 at 09:21:59AM +0100, Christoph Hellwig wrote:
> This will make an iomap implementation of the method easier.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
Much better...
Reviewed-by: "Darrick J. Wong" <djwong@...nel.org>
--D
> ---
> fs/btrfs/verity.c | 5 +++--
> fs/ext4/verity.c | 6 +++---
> fs/f2fs/verity.c | 6 +++---
> fs/verity/enable.c | 9 +++++----
> include/linux/fsverity.h | 4 ++--
> 5 files changed, 16 insertions(+), 14 deletions(-)
>
> diff --git a/fs/btrfs/verity.c b/fs/btrfs/verity.c
> index a2ac3fb68bc8..e7643c22a6bf 100644
> --- a/fs/btrfs/verity.c
> +++ b/fs/btrfs/verity.c
> @@ -774,16 +774,17 @@ static struct page *btrfs_read_merkle_tree_page(struct inode *inode,
> /*
> * fsverity op that writes a Merkle tree block into the btree.
> *
> - * @inode: inode to write a Merkle tree block for
> + * @file: file to write a Merkle tree block for
> * @buf: Merkle tree block to write
> * @pos: the position of the block in the Merkle tree (in bytes)
> * @size: the Merkle tree block size (in bytes)
> *
> * Returns 0 on success or negative error code on failure
> */
> -static int btrfs_write_merkle_tree_block(struct inode *inode, const void *buf,
> +static int btrfs_write_merkle_tree_block(struct file *file, const void *buf,
> u64 pos, unsigned int size)
> {
> + struct inode *inode = file_inode(file);
> loff_t merkle_pos = merkle_file_pos(inode);
>
> if (merkle_pos < 0)
> diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c
> index 415d9c4d8a32..2ce4cf8a1e31 100644
> --- a/fs/ext4/verity.c
> +++ b/fs/ext4/verity.c
> @@ -380,12 +380,12 @@ static struct page *ext4_read_merkle_tree_page(struct inode *inode,
> return folio_file_page(folio, index);
> }
>
> -static int ext4_write_merkle_tree_block(struct inode *inode, const void *buf,
> +static int ext4_write_merkle_tree_block(struct file *file, const void *buf,
> u64 pos, unsigned int size)
> {
> - pos += ext4_verity_metadata_pos(inode);
> + pos += ext4_verity_metadata_pos(file_inode(file));
>
> - return pagecache_write(inode, buf, size, pos);
> + return pagecache_write(file_inode(file), buf, size, pos);
> }
>
> const struct fsverity_operations ext4_verityops = {
> diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c
> index 05b935b55216..c1c4d8044681 100644
> --- a/fs/f2fs/verity.c
> +++ b/fs/f2fs/verity.c
> @@ -278,12 +278,12 @@ static struct page *f2fs_read_merkle_tree_page(struct inode *inode,
> return folio_file_page(folio, index);
> }
>
> -static int f2fs_write_merkle_tree_block(struct inode *inode, const void *buf,
> +static int f2fs_write_merkle_tree_block(struct file *file, const void *buf,
> u64 pos, unsigned int size)
> {
> - pos += f2fs_verity_metadata_pos(inode);
> + pos += f2fs_verity_metadata_pos(file_inode(file));
>
> - return pagecache_write(inode, buf, size, pos);
> + return pagecache_write(file_inode(file), buf, size, pos);
> }
>
> const struct fsverity_operations f2fs_verityops = {
> diff --git a/fs/verity/enable.c b/fs/verity/enable.c
> index 95ec42b84797..c56c18e2605b 100644
> --- a/fs/verity/enable.c
> +++ b/fs/verity/enable.c
> @@ -41,14 +41,15 @@ static int hash_one_block(const struct merkle_tree_params *params,
> return 0;
> }
>
> -static int write_merkle_tree_block(struct inode *inode, const u8 *buf,
> +static int write_merkle_tree_block(struct file *file, const u8 *buf,
> unsigned long index,
> const struct merkle_tree_params *params)
> {
> + struct inode *inode = file_inode(file);
> u64 pos = (u64)index << params->log_blocksize;
> int err;
>
> - err = inode->i_sb->s_vop->write_merkle_tree_block(inode, buf, pos,
> + err = inode->i_sb->s_vop->write_merkle_tree_block(file, buf, pos,
> params->block_size);
> if (err)
> fsverity_err(inode, "Error %d writing Merkle tree block %lu",
> @@ -135,7 +136,7 @@ static int build_merkle_tree(struct file *filp,
> err = hash_one_block(params, &buffers[level]);
> if (err)
> goto out;
> - err = write_merkle_tree_block(inode,
> + err = write_merkle_tree_block(filp,
> buffers[level].data,
> level_offset[level],
> params);
> @@ -155,7 +156,7 @@ static int build_merkle_tree(struct file *filp,
> err = hash_one_block(params, &buffers[level]);
> if (err)
> goto out;
> - err = write_merkle_tree_block(inode,
> + err = write_merkle_tree_block(filp,
> buffers[level].data,
> level_offset[level],
> params);
> diff --git a/include/linux/fsverity.h b/include/linux/fsverity.h
> index ea1ed2e6c2f9..e22cf84fe83a 100644
> --- a/include/linux/fsverity.h
> +++ b/include/linux/fsverity.h
> @@ -116,7 +116,7 @@ struct fsverity_operations {
> /**
> * Write a Merkle tree block to the given inode.
> *
> - * @inode: the inode for which the Merkle tree is being built
> + * @file: the file for which the Merkle tree is being built
> * @buf: the Merkle tree block to write
> * @pos: the position of the block in the Merkle tree (in bytes)
> * @size: the Merkle tree block size (in bytes)
> @@ -126,7 +126,7 @@ struct fsverity_operations {
> *
> * Return: 0 on success, -errno on failure
> */
> - int (*write_merkle_tree_block)(struct inode *inode, const void *buf,
> + int (*write_merkle_tree_block)(struct file *file, const void *buf,
> u64 pos, unsigned int size);
> };
>
> --
> 2.47.3
>
>
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