Here is v4. I removed RFC and fixed a fatal bug in v3.
This patch series is a preparetion for removing page_cgroup->flags. To remove
it, we need to reduce flags on page_cgroup. In this set, PCG_MOVE_LOCK and
PCG_FILE_MAPPED are remvoed.
After this, we only have 3 bits.
==
enum {
/* flags for mem_cgroup */
PCG_LOCK, /* Lock for pc->mem_cgroup and following bits. */
PCG_USED, /* this object is in use. */
PCG_MIGRATION, /* under page migration */
__NR_PCG_FLAGS,
};
==
I'll make a try to merge this 3bits to lower 3bits of pointer to
memcg. Then, we can make page_cgroup 8(4)bytes per page.
Major changes since v3 are
- replaced move_lock_page_cgroup() with move_lock_mem_cgroup().
passes pointer to memcg rather than page_cgroup.
Working on linux-next feb13 and passed several tests.
Thanks,
-Kame
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>