Re: [PATCH] mm: convert totalram_pages, totalhigh_pages and managed_pages to atomic.
From: Arun KS <hidden>
Date: 2018-10-23 04:48:26
Also in:
amd-gfx, ceph-devel, dm-devel, dri-devel, intel-gfx, kexec, linux-fsdevel, linux-mediatek, linux-mm, linux-pm, linux-um, linuxppc-dev, netfilter-devel
On 2018-10-23 09:45, Joe Perches wrote:
On Mon, 2018-10-22 at 22:53 +0530, Arun KS wrote:quoted
Remove managed_page_count_lock spinlock and instead use atomic variables.
Hello Joe,
Perhaps better to define and use macros for the accesses instead of specific uses of atomic_long_<inc/dec/read> Something like: #define totalram_pages() (unsigned long)atomic_long_read(&_totalram_pages) #define totalram_pages_inc() (unsigned long)atomic_long_inc(&_totalram_pages) #define totalram_pages_dec() (unsigned long)atomic_long_dec(&_totalram_pages)
That sounds like a nice idea. Regards, Arun