On Wed, Dec 28, 2016 at 5:16 PM, wrote:

diff --git a/storage/innobase/fil/fil0crypt.cc b/storage/innobase/fil/ fil0crypt.cc index 75efcdfdab0..095b9f706c0 100644 --- a/storage/innobase/fil/fil0crypt.cc +++ b/storage/innobase/fil/fil0crypt.cc @@ -1179,10 +1179,11 @@ fil_crypt_start_encrypting_space(

/* 3 - compute location to store crypt data */ byte* frame = buf_block_get_frame(block); - ulint maxsize = 0; ut_ad(crypt_data); - crypt_data->page0_offset = - fsp_header_get_crypt_offset(page_size, &maxsize); + crypt_data->page0_offset = FSP_HEADER_OFFSET + + fsp_header_get_encryption_offset(page_size); + const ulint maxsize = page_size.logical() + - crypt_data->page0_offset - FIL_PAGE_DATA_END;

This I do not like, why fsp_header_get_encryption_offset does not calculate the actual offset so that there is no need for adjustments? Now every place where you call this you need to add FSP_HEADER_OFFSET to returned offset. Similarly for maxsize actually meaning free space on the page. This is naturally technically correct, but is it maintainable? R: Jan