On Fri, Jul 07, 2023 at 02:52:03PM +0530, Charan Teja Kalla wrote:

Hi,

Can you please help in back porting the below patch to linux-5.15.y stable tree: commit d8c47cc7bf602ef73384a00869a70148146c1191("mm: page_io: fix psi memory pressure error on cold swapins") .

This commit does not apply to the 5.15.y kernel at all, how did you test this?

With the absence of this patch we are seeing some user space tools, like Android low memory killer based on PSI events, bit aggressive as it makes the PSI is accounted for even cold swapin on a device where swap is mounted on a zram with slower backing dev.

How did you test this if the commit does not apply properly at all?

If you need this in the 5.15.y kernel, please provide a working, and tested, backport.

thanks,

greg k-h