tree aa3c77659d80d714e833a35bcfc20b72a9b6f368
parent 0d0fb0f9c5fddef4a10242fe3337f00f528a3099
author Shiyong Li <shi-yong.li@motorola.com> 1271051301 +0800
committer Pekka Enberg <penberg@cs.helsinki.fi> 1271267565 +0300

slab: Fix missing DEBUG_SLAB last user

Even with SLAB_RED_ZONE and SLAB_STORE_USER enabled, kernel would NOT store
redzone and last user data around allocated memory space if "arch cache line >
sizeof(unsigned long long)". As a result, last user information is unexpectedly
MISSED while dumping slab corruption log.

This fix makes sure that redzone and last user tags get stored unless the
required alignment breaks redzone's.

Signed-off-by: Shiyong Li <shi-yong.li@motorola.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>