Re: [PATCH 3/3] xfs: reserve blocks for ifree transaction during log recovery

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On Wed, Feb 13, 2019 at 12:50:59PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> Log recovery frees all the inodes stored in the unlinked list, which can
> cause expansion of the free inode btree.  The ifree code skips block
> reservations if it thinks there's a per-AG space reservation, but we
> don't set up the reservation until after log recovery, which means that
> a finobt expansion blows up in xfs_trans_mod_sb when we exceed the
> transaction's block reservation.
> 
> To fix this, we set the "no finobt reservation" flag to true when we
> create the xfs_mount and only set it to false if we confirm that every
> AG had enough free space to put aside for the finobt.
> 
> While we're at it we change the flag name to be clearer about what it
> actually does.

Looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

But throwing in the field rename makes the patch way bigger and
not as obvious to understand.  Any reason it can't be split into
a separate patch?



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