[PATCH for-4.19 1/2] staging: erofs: fix error handling when failed to read compresssed data

[Gao Xiang]

On 2019/4/1 19:40, Greg Kroah-Hartman wrote:
> On Mon, Apr 01, 2019 at 02:53:08PM +0800, Gao Xiang wrote:
>> commit b6391ac73400eff38377a4a7364bd3df5efb5178 upstream.
>>
>> Complete read error handling paths for all three kinds of
>> compressed pages:
>>
>>  1) For cache-managed pages, PG_uptodate will be checked since
>>     read_endio will unlock and SetPageUptodate for these pages;
>>
>>  2) For inplaced pages, read_endio cannot SetPageUptodate directly
>>     since it should be used to mark the final decompressed data,
>>     PG_error will be set with page locked for IO error instead;
>>
>>  3) For staging pages, PG_error is used, which is similar to
>>     what we do for inplaced pages.
>>
>> Fixes: 3883a79abd02 ("staging: erofs: introduce VLE decompression support")
>> Cc: <stable at vger.kernel.org> # 4.19+
>> Reviewed-by: Chao Yu <yuchao0 at huawei.com>
>> Signed-off-by: Gao Xiang <gaoxiang25 at huawei.com>
>> ---
>> This series resolves the following conflicts:
>> FAILED: patch "[PATCH] staging: erofs: fix error handling when failed to read" failed to apply to 4.19-stable tree
>> FAILED: patch "[PATCH] staging: erofs: keep corrupted fs from crashing kernel in" failed to apply to 4.19-stable tree
> 
> Thanks for both of these, now queued up.
> 
> greg k-h

It's my pleasure to backport related conflict bugfixes to stable kernels. :)

Thanks,
Gao Xiang


>