Re: [PATCH] ext4: Detect already used quota file early

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On Tue, Oct 13, 2020 at 03:22:21PM +0200, Jan Kara wrote:
> When we try to use file already used as a quota file again (for the same
> or different quota type), strange things can happen. At the very least
> lockdep annotations may be wrong but also inode flags may be wrongly set
> / reset. When the file is used for two quota types at once we can even
> corrupt the file and likely crash the kernel. Catch all these cases by
> checking whether passed file is already used as quota file and bail
> early in that case.
> 
> This fixes occasional generic/219 failure due to lockdep complaint.
> 
> Reported-by: Ritesh Harjani <riteshh@xxxxxxxxxxxxx>
> Signed-off-by: Jan Kara <jack@xxxxxxx>

Thanks, applied.

					- Ted



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