tree 9e6350fd9da5aef0b53ddeddd82f618ae16bf931
parent 79dba2eaa771c3173957eccfd288e0e0d12e4d3f
author Dave Chinner <dchinner@redhat.com> 1272498950 +1000
committer Alex Elder <aelder@sgi.com> 1272576133 -0500

xfs: add a shrinker to background inode reclaim

On low memory boxes or those with highmem, kernel can OOM before the
background reclaims inodes via xfssyncd. Add a shrinker to run inode
reclaim so that it inode reclaim is expedited when memory is low.

This is more complex than it needs to be because the VM folk don't
want a context added to the shrinker infrastructure. Hence we need
to add a global list of XFS mount structures so the shrinker can
traverse them.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>