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authorEric Biggers <ebiggers@google.com>2022-09-01 22:32:07 +0300
committerEric Biggers <ebiggers@google.com>2022-09-22 06:33:06 +0300
commit22e9947a4b2ba255888541bd0111cf00b9b16586 (patch)
tree3eeb3e78d55ade9dd42dcc2900c25c9329f09f0c /fs/crypto/fscrypt_private.h
parentd7e7b9af104c7b389a0c21eb26532511bce4b510 (diff)
downloadlinux-22e9947a4b2ba255888541bd0111cf00b9b16586.tar.xz
fscrypt: stop holding extra request_queue references
Now that the fscrypt_master_key lifetime has been reworked to not be subject to the quirks of the keyrings subsystem, blk_crypto_evict_key() no longer gets called after the filesystem has already been unmounted. Therefore, there is no longer any need to hold extra references to the filesystem's request_queue(s). (And these references didn't always do their intended job anyway, as pinning a request_queue doesn't necessarily pin the corresponding blk_crypto_profile.) Stop taking these extra references. Instead, just pass the super_block to fscrypt_destroy_inline_crypt_key(), and use it to get the list of block devices the key needs to be evicted from. Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20220901193208.138056-3-ebiggers@kernel.org
Diffstat (limited to 'fs/crypto/fscrypt_private.h')
-rw-r--r--fs/crypto/fscrypt_private.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h
index 577cae7facb0..d5f68a0c5d15 100644
--- a/fs/crypto/fscrypt_private.h
+++ b/fs/crypto/fscrypt_private.h
@@ -184,7 +184,7 @@ struct fscrypt_symlink_data {
struct fscrypt_prepared_key {
struct crypto_skcipher *tfm;
#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
- struct fscrypt_blk_crypto_key *blk_key;
+ struct blk_crypto_key *blk_key;
#endif
};
@@ -344,7 +344,8 @@ int fscrypt_prepare_inline_crypt_key(struct fscrypt_prepared_key *prep_key,
const u8 *raw_key,
const struct fscrypt_info *ci);
-void fscrypt_destroy_inline_crypt_key(struct fscrypt_prepared_key *prep_key);
+void fscrypt_destroy_inline_crypt_key(struct super_block *sb,
+ struct fscrypt_prepared_key *prep_key);
/*
* Check whether the crypto transform or blk-crypto key has been allocated in
@@ -390,7 +391,8 @@ fscrypt_prepare_inline_crypt_key(struct fscrypt_prepared_key *prep_key,
}
static inline void
-fscrypt_destroy_inline_crypt_key(struct fscrypt_prepared_key *prep_key)
+fscrypt_destroy_inline_crypt_key(struct super_block *sb,
+ struct fscrypt_prepared_key *prep_key)
{
}
@@ -600,7 +602,8 @@ extern struct fscrypt_mode fscrypt_modes[];
int fscrypt_prepare_key(struct fscrypt_prepared_key *prep_key,
const u8 *raw_key, const struct fscrypt_info *ci);
-void fscrypt_destroy_prepared_key(struct fscrypt_prepared_key *prep_key);
+void fscrypt_destroy_prepared_key(struct super_block *sb,
+ struct fscrypt_prepared_key *prep_key);
int fscrypt_set_per_file_enc_key(struct fscrypt_info *ci, const u8 *raw_key);