[PATCH 2/6] vmap: flush vmap aliases when mapping fails

[Alex Elder]

On Wed, 2011-03-23 at 17:14 +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner at redhat.com>
> 
> On 32 bit systems, vmalloc space is limited and XFS can chew through
> it quickly as the vmalloc space is lazily freed. This can result in
> failure to map buffers, even when there is apparently large amounts
> of vmalloc space available. Hence, if we fail to map a buffer, purge
> the aliases that have not yet been freed to hopefuly free up enough
> vmalloc space to allow a retry to succeed.

Looks good.

Reviewed-by: Alex Elder <aelder at sgi.com>

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

. . .