On 2018/2/28 20:31, Yunlong Song wrote:
> Previous dentry page uses highmem, which will cause panic in platforms
> using highmem (such as arm), since the address space of dentry pages
> from highmem directly goes into the decryption path via the function
> fscrypt_fname_disk_to_usr. But sg_init_one assumes the address is not
> from highmem, and then cause panic since it doesn't call kmap_high but
> kunmap_high is triggered at the end. To fix this problem in a simple
> way, this patch avoids to put dentry page in pagecache into highmem.
> 
> Signed-off-by: Yunlong Song <[email protected]>

Reviewed-by: Chao Yu <[email protected]>

Thanks,


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