Re: [PATCH] f2fs: allow to change discard policy based on cached discard cmds

[Chao Yu]

On 2021/3/11 9:47, Sahitya Tummala wrote:
> With the default DPOLICY_BG discard thread is ioaware, which prevents
> the discard thread from issuing the discard commands. On low RAM setups,
> it is observed that these discard commands in the cache are consuming
> high memory. This patch aims to relax the memory pressure on the system
> due to f2fs pending discard cmds by changing the policy to DPOLICY_FORCE
> based on the nm_i->ram_thresh configured.

Agreed.

> Signed-off-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>

Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>

Thanks,