diff options
Diffstat (limited to 'fs/crypto/keysetup.c')
| -rw-r--r-- | fs/crypto/keysetup.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c index f423d48264db..d71c2d6dd162 100644 --- a/fs/crypto/keysetup.c +++ b/fs/crypto/keysetup.c @@ -286,10 +286,10 @@ static int fscrypt_setup_v2_file_key(struct fscrypt_info *ci, * * If the master key is found in the filesystem-level keyring, then the * corresponding 'struct key' is returned in *master_key_ret with - * ->sem read-locked. This is needed to ensure that only one task links the - * fscrypt_info into ->mk_decrypted_inodes (as multiple tasks may race to create - * an fscrypt_info for the same inode), and to synchronize the master key being - * removed with a new inode starting to use it. + * ->mk_secret_sem read-locked. This is needed to ensure that only one task + * links the fscrypt_info into ->mk_decrypted_inodes (as multiple tasks may race + * to create an fscrypt_info for the same inode), and to synchronize the master + * key being removed with a new inode starting to use it. */ static int setup_file_encryption_key(struct fscrypt_info *ci, struct key **master_key_ret) @@ -333,7 +333,7 @@ static int setup_file_encryption_key(struct fscrypt_info *ci, } mk = key->payload.data[0]; - down_read(&key->sem); + down_read(&mk->mk_secret_sem); /* Has the secret been removed (via FS_IOC_REMOVE_ENCRYPTION_KEY)? */ if (!is_master_key_secret_present(&mk->mk_secret)) { @@ -376,7 +376,7 @@ static int setup_file_encryption_key(struct fscrypt_info *ci, return 0; out_release_key: - up_read(&key->sem); + up_read(&mk->mk_secret_sem); key_put(key); return err; } @@ -514,7 +514,9 @@ int fscrypt_get_encryption_info(struct inode *inode) res = 0; out: if (master_key) { - up_read(&master_key->sem); + struct fscrypt_master_key *mk = master_key->payload.data[0]; + + up_read(&mk->mk_secret_sem); key_put(master_key); } if (res == -ENOKEY) @@ -577,7 +579,7 @@ int fscrypt_drop_inode(struct inode *inode) mk = ci->ci_master_key->payload.data[0]; /* - * Note: since we aren't holding key->sem, the result here can + * Note: since we aren't holding ->mk_secret_sem, the result here can * immediately become outdated. But there's no correctness problem with * unnecessarily evicting. Nor is there a correctness problem with not * evicting while iput() is racing with the key being removed, since |