The patch titled Subject: lib/percpu_counter.c: use helper macro abs() has been added to the -mm tree. Its filename is percpu_counter-use-helper-macro-abs.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/percpu_counter-use-helper-macro-abs.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/percpu_counter-use-helper-macro-abs.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/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: lib/percpu_counter.c: use helper macro abs() Use helper macro abs() to simplify the "x >= t || x <= -t" cmp. Link: https://lkml.kernel.org/r/20200927122746.5964-1-linmiaohe@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/percpu_counter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/percpu_counter.c~percpu_counter-use-helper-macro-abs +++ a/lib/percpu_counter.c @@ -85,7 +85,7 @@ void percpu_counter_add_batch(struct per preempt_disable(); count = __this_cpu_read(*fbc->counters) + amount; - if (count >= batch || count <= -batch) { + if (abs(count) >= batch) { unsigned long flags; raw_spin_lock_irqsave(&fbc->lock, flags); fbc->count += count; _ Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are mm-swap-fix-confusing-comment-in-release_pages.patch mm-swap_slotsc-remove-always-zero-and-unused-return-value-of-enable_swap_slots_cache.patch mm-remove-useless-out-label-in-__swap_writepage.patch mm-memcontrol-correct-the-comment-of-mem_cgroup_iter.patch mm-page_counter-correct-the-obsolete-func-name-in-the-comment-of-page_counter_try_charge.patch mm-memcontrol-remove-obsolete-comment-of-mem_cgroup_unmark_under_oom.patch mm-use-helper-function-mapping_allow_writable.patch mm-mmap-use-helper-function-allow_write_access-in-__remove_shared_vm_struct.patch mm-mempool-add-else-to-split-mutually-exclusive-case.patch mm-vmstat-use-helper-macro-abs.patch mm-fix-some-broken-comments.patch mm-use-helper-function-put_write_access.patch percpu_counter-use-helper-macro-abs.patch mm-migrate-avoid-possible-unnecessary-process-right-check-in-kernel_move_pages.patch