tree b227a17a3c1b5399e1b6e57a7f3a8174b1f9fd84
parent 3b9c2f2e0e99bb67c96abcb659b3465efe3bee1f
author Gao Xiang <gaoxiang25@huawei.com> 1553485207 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1553547258 +0900

staging: erofs: fix error handling when failed to read compresssed data

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@vger.kernel.org> # 4.19+
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>