Hi Sergey, Thanks for your comment! On 2017/3/29 14:42, Sergey Senozhatsky wrote: > On (03/29/17 09:20), Minchan Kim wrote: >> Hello, >> >> On Tue, Mar 28, 2017 at 03:20:22PM +0800, Yisheng Xie wrote: >>> Hi, all, >>> >>> We had backport the no-lru migration to linux-4.1, meanwhile change the >>> ZS_MAX_ZSPAGE_ORDER to 3. Then we met a BUG_ON(!page[1]). >> >> Hmm, I don't know how you backported. >> >> There isn't any problem with default ZS_MAX_ZSPAGE_ORDER. Right? >> So, it happens only if you changed it to 3? > > I agree with Minchan. too much things could have gone wrong during the > backport. > >> Could you tell me what is your base kernel? and what zram/zsmalloc >> version(ie, from what kernel version) you backported to your >> base kernel? > > agree again. > > > > Yisheng, do you have this commit applied? No, we missed this patch, I will try it. Really thanks for that.
Thanks Yisheng Xie > > commit c102f07ca0b04f2cb49cfc161c83f6239d17f491 > Author: Junil Lee <[email protected]> > Date: Wed Jan 20 14:58:18 2016 -0800 > > zsmalloc: fix migrate_zspage-zs_free race condition > > > -ss > > . >
