The patch titled memcg: remove impossible conditional when committing has been added to the -mm tree. Its filename is memcg-remove-impossible-conditional-when-committing.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: memcg: remove impossible conditional when committing From: Johannes Weiner <hannes@xxxxxxxxxxx> No callsite ever passes a NULL pointer for a struct mem_cgroup * to the committing function. There is no need to check for it. Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Cc: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> Cc: Minchan Kim <minchan.kim@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 4 ---- 1 file changed, 4 deletions(-) diff -puN mm/memcontrol.c~memcg-remove-impossible-conditional-when-committing mm/memcontrol.c --- a/mm/memcontrol.c~memcg-remove-impossible-conditional-when-committing +++ a/mm/memcontrol.c @@ -2092,10 +2092,6 @@ static void __mem_cgroup_commit_charge(s { int nr_pages = page_size >> PAGE_SHIFT; - /* try_charge() can return NULL to *memcg, taking care of it. */ - if (!mem) - return; - lock_page_cgroup(pc); if (unlikely(PageCgroupUsed(pc))) { unlock_page_cgroup(pc); _ Patches currently in -mm which might be from hannes@xxxxxxxxxxx are origin.patch epoll-fix-compiler-warning-and-optimize-the-non-blocking-path-fix.patch memcg-res_counter_read_u64-fix-potential-races-on-32-bit-machines.patch memcg-fix-ugly-initialization-of-return-value-is-in-caller.patch memcg-soft-limit-reclaim-should-end-at-limit-not-below.patch memcg-simplify-the-way-memory-limits-are-checked.patch memcg-remove-unused-page-flag-bitfield-defines.patch memcg-remove-impossible-conditional-when-committing.patch crash_dump-export-is_kdump_kernel-to-modules-consolidate-elfcorehdr_addr-setup_elfcorehdr-and-saved_max_pfn.patch crash_dump-export-is_kdump_kernel-to-modules-consolidate-elfcorehdr_addr-setup_elfcorehdr-and-saved_max_pfn-fix.patch crash_dump-export-is_kdump_kernel-to-modules-consolidate-elfcorehdr_addr-setup_elfcorehdr-and-saved_max_pfn-fix-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html