From: Dave Chinner <dchinner@redhat.com>
Date: Wed, 7 Mar 2012 04:50:22 +0000 (+0000)
Subject: xfs: fallback to vmalloc for large buffers in xfs_getbmap
X-Git-Tag: v3.4-rc1~121^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f074211f6041305b645669464343d504f4e6a290;p=pandora-kernel.git

xfs: fallback to vmalloc for large buffers in xfs_getbmap

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.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
---

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