Re: [PATCH v3 12/18] xfs: filter out sparse regions from individual inode allocation

Dave Chinner
2015-02-08T22:49:53Z

On Fri, Feb 06, 2015 at 02:52:59PM -0500, Brian Foster wrote:
> Inode allocation from an existing record with free inodes traditionally
> selects the first inode available according to the ir_free mask. With
> sparse inode chunks, the ir_free mask could refer to an unallocated
> region. We must mask the unallocated regions out of ir_free before using
> it to select a free inode in the chunk.
>
> Create the xfs_inobt_first_free_inode() helper to find the first free
> inode available of the allocated regions of the inode chunk.
>
> Signed-off-by: Brian Foster <bfoster@redhat.com>

Helper can go early on in the patch set, and then when the sparse
inode support is added the bitmap stuff can added to the helepr.

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com