Re: [PATCH 29/31] ext4: reserve space for xattr entries/names

[Tahsin Erdogan]

On Wed, Jun 14, 2017 at 4:05 PM, Darrick J. Wong
<darrick.wong@xxxxxxxxxx> wrote:
> Why not just spill the values into their own ea_inodes if we need the
> space?  I guess that has the disadvantage that now we need to reserve
> quite a few more journal credits ((1 inode block, 1 bbitmap block, 1
> ibitmap block, 1 data block) * nr_inline_values) just in case we end up
> spilling all the values.
>

In last week's ext4 conference call we have discussed this problem and
possible solutions. The major concern with spilling/evacuation
approach was the added complexity. We haven't discussed the impact on
journal credits, but that is a valid point too.