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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/block/inline-encryption.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/block/inline-encryption.rst b/Documentation/block/inline-encryption.rst index 6380e6ab492b..7e0703a12dfb 100644 --- a/Documentation/block/inline-encryption.rst +++ b/Documentation/block/inline-encryption.rst @@ -206,6 +206,12 @@ it to a bio, given the blk_crypto_key and the data unit number that will be used for en/decryption. Users don't need to worry about freeing the bio_crypt_ctx later, as that happens automatically when the bio is freed or reset. +To submit a bio that uses inline encryption, users must call +``blk_crypto_submit_bio()`` instead of the usual ``submit_bio()``. This will +submit the bio to the underlying driver if it supports inline crypto, or else +call the blk-crypto fallback routines before submitting normal bios to the +underlying drivers. + Finally, when done using inline encryption with a blk_crypto_key on a block_device, users must call ``blk_crypto_evict_key()``. This ensures that the key is evicted from all keyslots it may be programmed into and unlinked from |