[PATCH 04/10] xfs: fallback to vmalloc for large buffers in xfs_getbmap

[Christoph Hellwig]

On Wed, Mar 07, 2012 at 03:50:22PM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner at redhat.com>
> 
> xfs_getbmap uses for a large buffer for extents, which is kmalloc'd.
> This can fail after the system has been running for some time as it
> is a high order allocation. Add a fallback to vmalloc so that it
> doesn't require contiguous memory and so won't randomly fail on
> files with large extent lists.

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>