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Date:   Tue, 29 Oct 2019 10:20:34 +0300
From:   Konstantin Khlebnikov <>
To:     Andreas Dilger <>,, Theodore Ts'o <>,
Cc:     Dmitry Monakhov <>,
        Eric Whitney <>
Subject: Re: [PATCH] ext4: deaccount delayed allocations at freeing inode in

On 29/10/2019 10.17, Konstantin Khlebnikov wrote:
> If inode->i_blocks is zero then ext4_evict_inode() skips ext4_truncate().
> Delayed allocation extents are freed later in ext4_clear_inode() but this
> happens when quota reference is already dropped. This leads to leak of
> reserved space in quota block, which disappears after umount-mount.
> This seems broken for a long time but worked somehow until recent changes
> in delayed allocation.

FYI, perf cannot correctly parse related perf events without this:

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