Re: generic/456 regression on 5.7-rc1, 1k test case

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Hello Eric,

On 4/14/20 1:42 AM, Eric Whitney wrote:
I'm seeing consistent failures for generic/456 while running kvm-xfstests' 1k
test case on 5.7-rc1.  This is with an x86-64 test appliance root file system
image dated 23 March 2020.

The test fails when e2fsck reports "inconsistent fs: inode 12, i_size is
147456, should be 163840".

Bisecting 5.7-rc1 identified the following patch as the cause:
ext4: don't set dioread_nolock by default for blocksize < pagesize
(626b035b816b).  Reverting the patch in 5.7-rc1 reliably eliminates the test
failure.


Since you could reliably reproduce it. Could you please try with this
patch and see if this fixes it for you?

https://patchwork.ozlabs.org/project/linux-ext4/patch/20200331105016.8674-1-jack@xxxxxxx/

-ritesh




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