diff options
Diffstat (limited to 'fs/crypto/keysetup.c')
| -rw-r--r-- | fs/crypto/keysetup.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c index 22a94b18fe70..7f85fc645602 100644 --- a/fs/crypto/keysetup.c +++ b/fs/crypto/keysetup.c @@ -129,8 +129,10 @@ int fscrypt_prepare_key(struct fscrypt_prepared_key *prep_key, if (IS_ERR(tfm)) return PTR_ERR(tfm); /* - * Pairs with READ_ONCE() in fscrypt_is_key_prepared(). (Only matters - * for the per-mode keys, which are shared by multiple inodes.) + * Pairs with the smp_load_acquire() in fscrypt_is_key_prepared(). + * I.e., here we publish ->tfm with a RELEASE barrier so that + * concurrent tasks can ACQUIRE it. Note that this concurrency is only + * possible for per-mode keys, not for per-file keys. */ smp_store_release(&prep_key->tfm, tfm); return 0; |