From bbe395ded3ef2a2aecfc90372bda2b3e3ed8f2ee Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sun, 10 Aug 2025 00:56:59 -0700 Subject: [PATCH] ceph: move crypt info pointer to fs-specific part of inode Move the fscrypt_inode_info pointer into the filesystem-specific part of the inode by adding the field ceph_inode_info::i_crypt_info and configuring fscrypt_operations::inode_info_offs accordingly. This is a prerequisite for a later commit that removes inode::i_crypt_info, saving memory and improving cache efficiency with filesystems that don't support fscrypt. Co-developed-by: Christian Brauner Signed-off-by: Eric Biggers Link: https://lore.kernel.org/20250810075706.172910-7-ebiggers@kernel.org Signed-off-by: Christian Brauner --- fs/ceph/crypto.c | 2 ++ fs/ceph/inode.c | 1 + fs/ceph/super.h | 1 + 3 files changed, 4 insertions(+) diff --git a/fs/ceph/crypto.c b/fs/ceph/crypto.c index cab7226192073..7026e794813ca 100644 --- a/fs/ceph/crypto.c +++ b/fs/ceph/crypto.c @@ -133,6 +133,8 @@ static const union fscrypt_policy *ceph_get_dummy_policy(struct super_block *sb) } static struct fscrypt_operations ceph_fscrypt_ops = { + .inode_info_offs = (int)offsetof(struct ceph_inode_info, i_crypt_info) - + (int)offsetof(struct ceph_inode_info, netfs.inode), .needs_bounce_pages = 1, .get_context = ceph_crypt_get_context, .set_context = ceph_crypt_set_context, diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index fc543075b827a..480cb3a1d639a 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -665,6 +665,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb) ci->i_work_mask = 0; memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); #ifdef CONFIG_FS_ENCRYPTION + ci->i_crypt_info = NULL; ci->fscrypt_auth = NULL; ci->fscrypt_auth_len = 0; #endif diff --git a/fs/ceph/super.h b/fs/ceph/super.h index cf176aab0f823..25d8bacbcf440 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -463,6 +463,7 @@ struct ceph_inode_info { unsigned long i_work_mask; #ifdef CONFIG_FS_ENCRYPTION + struct fscrypt_inode_info *i_crypt_info; u32 fscrypt_auth_len; u32 fscrypt_file_len; u8 *fscrypt_auth; -- 2.47.3