diff options
Diffstat (limited to 'innobase/include/buf0buf.h')
| -rw-r--r-- | innobase/include/buf0buf.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/innobase/include/buf0buf.h b/innobase/include/buf0buf.h index b613d60ebf7..d2ee1a440c7 100644 --- a/innobase/include/buf0buf.h +++ b/innobase/include/buf0buf.h @@ -388,11 +388,24 @@ to a file. Note that we must be careful to calculate the same value on 32-bit and 64-bit architectures. */ ulint -buf_calc_page_checksum( -/*===================*/ +buf_calc_page_new_checksum( +/*=======================*/ /* out: checksum */ byte* page); /* in: buffer page */ /************************************************************************ +In versions < 4.0.14 and < 4.1.1 there was a bug that the checksum only +looked at the first few bytes of the page. This calculates that old +checksum. +NOTE: we must first store the new formula checksum to +FIL_PAGE_SPACE_OR_CHKSUM before calculating and storing this old checksum +because this takes that field as an input! */ + +ulint +buf_calc_page_old_checksum( +/*=======================*/ + /* out: checksum */ + byte* page); /* in: buffer page */ +/************************************************************************ Checks if a page is corrupt. */ ibool |