diff options
Diffstat (limited to 'innobase/buf/buf0flu.c')
| -rw-r--r-- | innobase/buf/buf0flu.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/innobase/buf/buf0flu.c b/innobase/buf/buf0flu.c index 47ac9c6b041..5102674a8df 100644 --- a/innobase/buf/buf0flu.c +++ b/innobase/buf/buf0flu.c @@ -361,21 +361,29 @@ buf_flush_init_for_writing( ulint space, /* in: space id */ ulint page_no) /* in: page number */ { - /* Write the newest modification lsn to the page */ - mach_write_to_8(page + FIL_PAGE_LSN, newest_lsn); + UT_NOT_USED(space); - mach_write_to_8(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN, newest_lsn); + /* Write the newest modification lsn to the page header and trailer */ + mach_write_to_8(page + FIL_PAGE_LSN, newest_lsn); - /* Write to the page the space id and page number */ + mach_write_to_8(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM, + newest_lsn); + /* Write the page number */ - mach_write_to_4(page + FIL_PAGE_SPACE, space); mach_write_to_4(page + FIL_PAGE_OFFSET, page_no); + /* Store the new formula checksum */ + + mach_write_to_4(page + FIL_PAGE_SPACE_OR_CHKSUM, + buf_calc_page_new_checksum(page)); + /* We overwrite the first 4 bytes of the end lsn field to store - a page checksum */ + the old formula checksum. Since it depends also on the field + FIL_PAGE_SPACE_OR_CHKSUM, it has to be calculated after storing the + new formula checksum. */ - mach_write_to_4(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN, - buf_calc_page_checksum(page)); + mach_write_to_4(page + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM, + buf_calc_page_old_checksum(page)); } /************************************************************************ |