Re: [RFC PATCH] btrfs: don't call btrfs_sync_file from iomap context

Josef Bacik
2020-09-03T16:47:04Z

On 9/3/20 12:32 PM, Christoph Hellwig wrote:
> We could trivially do something like this to allow the file system
> to call iomap_dio_complete without i_rwsem:
>

This is sort of how I envisioned it worked, which is why I was surprised when it
bit us. This would be the cleanest stop-gap right now, but as it stands I've
already sent a patch to work around the problem in btrfs for now, and we plan to
take up the locking rework next go around. Thanks,

Josef