linux-ext4 - [PATCH v5 10/13] f2fs: move verity info pointer to fs-specific part of inode

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Message-ID: <20250810075706.172910-11-ebiggers@kernel.org>
Date: Sun, 10 Aug 2025 00:57:03 -0700
From: Eric Biggers <ebiggers@...nel.org>
To: linux-fscrypt@...r.kernel.org,
	fsverity@...ts.linux.dev
Cc: linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-mtd@...ts.infradead.org,
	linux-btrfs@...r.kernel.org,
	ceph-devel@...r.kernel.org,
	Christian Brauner <brauner@...nel.org>,
	Eric Biggers <ebiggers@...nel.org>
Subject: [PATCH v5 10/13] f2fs: move verity info pointer to fs-specific part of inode

Move the fsverity_info pointer into the filesystem-specific part of the
inode by adding the field f2fs_inode_info::i_verity_info and configuring
fsverity_operations::inode_info_offs accordingly.

This is a prerequisite for a later commit that removes
inode::i_verity_info, saving memory and improving cache efficiency on
filesystems that don't support fsverity.

Co-developed-by: Christian Brauner <brauner@...nel.org>
Signed-off-by: Christian Brauner <brauner@...nel.org>
Signed-off-by: Eric Biggers <ebiggers@...nel.org>
---
 fs/f2fs/f2fs.h   | 3 +++
 fs/f2fs/super.c  | 3 +++
 fs/f2fs/verity.c | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 2f5c30c069c3c..6e465bbc85ee5 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -908,10 +908,13 @@ struct f2fs_inode_info {
 	unsigned int atomic_write_cnt;
 	loff_t original_i_size;		/* original i_size before atomic write */
 #ifdef CONFIG_FS_ENCRYPTION
 	struct fscrypt_inode_info *i_crypt_info; /* filesystem encryption info */
 #endif
+#ifdef CONFIG_FS_VERITY
+	struct fsverity_info *i_verity_info; /* filesystem verity info */
+#endif
 };
 
 static inline void get_read_extent_info(struct extent_info *ext,
 					struct f2fs_extent *i_ext)
 {
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index b42b55280d9e3..1db024b20e29b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -481,10 +481,13 @@ static void init_once(void *foo)
 
 	inode_init_once(&fi->vfs_inode);
 #ifdef CONFIG_FS_ENCRYPTION
 	fi->i_crypt_info = NULL;
 #endif
+#ifdef CONFIG_FS_VERITY
+	fi->i_verity_info = NULL;
+#endif
 }
 
 #ifdef CONFIG_QUOTA
 static const char * const quotatypes[] = INITQFNAMES;
 #define QTYPE2NAME(t) (quotatypes[t])
diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c
index 2287f238ae09e..f0ab9a3c7a82b 100644
--- a/fs/f2fs/verity.c
+++ b/fs/f2fs/verity.c
@@ -285,10 +285,12 @@ static int f2fs_write_merkle_tree_block(struct inode *inode, const void *buf,
 
 	return pagecache_write(inode, buf, size, pos);
 }
 
 const struct fsverity_operations f2fs_verityops = {
+	.inode_info_offs	= (int)offsetof(struct f2fs_inode_info, i_verity_info) -
+				  (int)offsetof(struct f2fs_inode_info, vfs_inode),
 	.begin_enable_verity	= f2fs_begin_enable_verity,
 	.end_enable_verity	= f2fs_end_enable_verity,
 	.get_verity_descriptor	= f2fs_get_verity_descriptor,
 	.read_merkle_tree_page	= f2fs_read_merkle_tree_page,
 	.write_merkle_tree_block = f2fs_write_merkle_tree_block,
-- 
2.50.1