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Date:   Wed, 13 Oct 2021 16:46:14 -0400
From:   "Theodore Ts'o" <>
To:     Eric Whitney <>,
Cc:     "Theodore Ts'o" <>
Subject: Re: [PATCH] Revert "ext4: enforce buffer head state assertion in ext4_da_map_blocks"

On Tue, 12 Oct 2021 13:19:01 -0400, Eric Whitney wrote:
> This reverts commit 948ca5f30e1df0c11eb5b0f410b9ceb97fa77ad9.
> Two crash reports from users running variations on 5.15-rc4 kernels
> suggest that it is premature to enforce the state assertion in the
> original commit.  Both crashes were triggered by BUG calls in that
> code, indicating that under some rare circumstance the buffer head
> state did not match a delayed allocated block at the time the
> block was written out.  No reproducer is available.  Resolving this
> problem will require more time than remains in the current release
> cycle, so reverting the original patch for the time being is necessary
> to avoid any instability it may cause.
> [...]

Applied, thanks!

[1/1] Revert "ext4: enforce buffer head state assertion in ext4_da_map_blocks"
      commit: 52264b162a51eadb0adcb55297cf91905c6ede98

Best regards,
Theodore Ts'o <>

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