Re: [PATCH v3 1/2] ext4: resize fs after resize_inode without e2fsck

["Theodore Ts'o" <tytso@mit.edu>]

On Fri, Jul 22, 2022 at 04:16:26PM +0800, Sun Ke wrote:
> 
> 1. The test run fsck automatically, and complain inconsistent，I think it
> need not run fsck.

The check script always run fscks after the test.  In order to
suppress the fsck complaint, we'll need to add this after the
resize2fs invocation:

_scratch_unmount
$DEBUGFS_PROG -w -R "set_super_value s_reserved_gdt_blocks 0" $SCRATCH_DEV \
        >>$seqres.full 2>&1

This resets the s_reserved_gdt_blocks field back to zero, so the fsck
doesn't fail.  Which is fine, because the point of the test is to see
whether the kernel dereferences a NULL pointer or not.

> 2. It warn missing kernel fix, but the commit had merged.

The way _fixed_by_kernel_commit works is if the test fails (for any
reason), it prints that you MAY be missing the bugfix commit:

> HINT: You _MAY_ be missing kernel fix:
>       b55c3cd102a6 ext4: add reserved GDT blocks check

		     	       		- Ted