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

From	Tahsin Erdogan <tahsin@google.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 29/31] ext4: reserve space for xattr entries/names
Date	2017-06-15 01:40 +0200
Message-ID	<tSq3f-3dG-5@gated-at.bofh.it> (permalink)
References	<tSkhc-85J-29@gated-at.bofh.it> <tSpAd-34c-3@gated-at.bofh.it>
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On Wed, Jun 14, 2017 at 4:05 PM, Darrick J. Wong
<darrick.wong@oracle.com> 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.

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[PATCH 29/31] ext4: reserve space for xattr entries/names Tahsin Erdogan <tahsin@google.com> - 2017-06-14 19:30 +0200
  Re: [PATCH 29/31] ext4: reserve space for xattr entries/names "Darrick J. Wong" <darrick.wong@oracle.com> - 2017-06-15 01:10 +0200
    Re: [PATCH 29/31] ext4: reserve space for xattr entries/names Tahsin Erdogan <tahsin@google.com> - 2017-06-15 01:40 +0200

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