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Date:   Wed, 7 Feb 2018 12:06:04 -0800
From:   Greg KH <>
To:     Jin Qian <>
Cc:     Theodore Ts'o <>,
        Andreas Dilger <>,
        Jaegeuk Kim <>,
        Changman Lee <>,
        Chao Yu <>,
        Alexander Viro <>,
        Jeff Layton <>,
        "J. Bruce Fields" <>,,,,, Jin Qian <>,
        linux-stable <>
Subject: Re: [PATCHv2 1/1] ext4/f2fs: don't put symlink in pagecache into

Some minor nits for when you send your next patch for stable:

On Tue, Feb 06, 2018 at 03:53:53PM -0800, Jin Qian wrote:
> From: Jin Qian <>

The original patch was written by Al Viro, please do not take the
original authorship off, that's not good.

> partial backport from 21fc61c73c3903c4c312d0802da01ec2b323d174 upstream
> to v4.4 to prevent virt_to_page on highmem.
> ext4_encrypted_follow_link uses kmap() for cpage
>   caddr = kmap(cpage);
> _ext4_fname_disk_to_usr calls virt_to_page on the kmapped address.
>   _ext4_fname_disk_to_usr()
>     ext4_fname_decrypt()
>       sg_init_one()
>         sg_init_one(&src_sg, iname->name, iname->len);
>           sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
> Cc: linux-stable <> # 4.4.y
> Signed-off-by: Al Viro <>
> Signed-off-by: Jin Qian <>
> Signed-off-by: Jin Qian <>

Why did you sign off on this twice?


greg k-h

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