Re: [PATCH] fix page_count in ->iomap_migrate_page()

[Gao Xiang]

On 2018/12/14 13:56, zhangjun wrote:
> IOMAP uses PG_private a little different with buffer_head based
> filesystem.
> It uses it as marker and when set, the page counter is not incremented,
> migrate_page_move_mapping() assumes that PG_private indicates a counter
> of +1.
> so, we have to pass a extra count of -1 to migrate_page_move_mapping()
> if the flag is set.
> 
> Signed-off-by: zhangjun <openzhangj@xxxxxxxxx>
> ---

I found that it fixed in
https://patchwork.kernel.org/patch/10684835/
and has been merged in
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=61c6de667263184125d5ca75e894fcad632b0dd3

It seems it has been corrected by Piotr.

Thanks,
Gao Xiang