btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker
This function was introduced by 247e743c ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable@vger.kernel.org Signed-off-by: NNikolay Borisov <nborisov@suse.com> Reviewed-by: NQu Wenruo <wqu@suse.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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