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| author | Eric Biggers <ebiggers@google.com> | 2024-02-23 22:01:03 -0800 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2024-02-23 22:03:48 -0800 |
| commit | 8c62f31eddb71c6f6878258579318c1156045247 (patch) | |
| tree | 653455698ae03a183d5f5886a7e2a978c8681e20 | |
| parent | 2f944c66ae73eed4250607ccd3acdf2531afc194 (diff) | |
| download | linux-8c62f31eddb71c6f6878258579318c1156045247.tar.gz | |
fscrypt: shrink the size of struct fscrypt_inode_info slightly
Shrink the size of struct fscrypt_inode_info by 8 bytes by packing the
small fields into the 64 bits after ci_enc_key.
Link: https://lore.kernel.org/r/20240224060103.91037-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
| -rw-r--r-- | fs/crypto/fscrypt_private.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h index 1892356cf924ac..8371e4e1f596a9 100644 --- a/fs/crypto/fscrypt_private.h +++ b/fs/crypto/fscrypt_private.h @@ -222,16 +222,19 @@ struct fscrypt_inode_info { struct fscrypt_prepared_key ci_enc_key; /* True if ci_enc_key should be freed when this struct is freed */ - bool ci_owns_key; + u8 ci_owns_key : 1; #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT /* * True if this inode will use inline encryption (blk-crypto) instead of * the traditional filesystem-layer encryption. */ - bool ci_inlinecrypt; + u8 ci_inlinecrypt : 1; #endif + /* True if ci_dirhash_key is initialized */ + u8 ci_dirhash_key_initialized : 1; + /* * log2 of the data unit size (granularity of contents encryption) of * this file. This is computable from ci_policy and ci_inode but is @@ -242,6 +245,9 @@ struct fscrypt_inode_info { /* Cached value: log2 of number of data units per FS block */ u8 ci_data_units_per_block_bits; + /* Hashed inode number. Only set for IV_INO_LBLK_32 */ + u32 ci_hashed_ino; + /* * Encryption mode used for this inode. It corresponds to either the * contents or filenames encryption mode, depending on the inode type. @@ -276,16 +282,12 @@ struct fscrypt_inode_info { * the plaintext filenames -- currently just casefolded directories. */ siphash_key_t ci_dirhash_key; - bool ci_dirhash_key_initialized; /* The encryption policy used by this inode */ union fscrypt_policy ci_policy; /* This inode's nonce, copied from the fscrypt_context */ u8 ci_nonce[FSCRYPT_FILE_NONCE_SIZE]; - - /* Hashed inode number. Only set for IV_INO_LBLK_32 */ - u32 ci_hashed_ino; }; typedef enum { |