Icenowy Zheng
f03da34a2f
[ Upstream commit38fb6d0ea3] The kernel mount_block_root() function expects -EACESS or -EINVAL for a unmountable filesystem when trying to mount the root with different filesystem types. However, in 5.3-rc1 the behavior when F2FS code cannot find valid block changed to return -EFSCORRUPTED(-EUCLEAN), and this error code makes mount_block_root() fail when trying to probe F2FS. When the magic number of the superblock mismatches, it has a high probability that it's just not a F2FS. In this case return -EINVAL seems to be a better result, and this return value can make mount_block_root() probing work again. Return -EINVAL when the superblock has magic mismatch, -EFSCORRUPTED in other cases (the magic matches but the superblock cannot be recognized). Fixes:10f966bbf5("f2fs: use generic EFSBADCRC/EFSCORRUPTED") Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.