xfs: fallback to vmalloc for large buffers in xfs_compat_attrlist_by_handle
Shamelessly copied from dchinner's: ad650f5b xfs: fallback to vmalloc for large buffers in xfs_attrmulti_attr_get xfsdump uses a large buffer for extended attributes, which has a kmalloc'd shadow buffer in the kernel. 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 while xfsdump is running. This was done for xfs_attrlist_by_handle but xfs_compat_attrlist_by_handle (the 32-bit version) needs the same attention. Signed-off-by: NEric Sandeen <sandeen@redhat.com> Reviewed-by: NMark Tinguely <tinguely@sgi.com> Signed-off-by: NBen Myers <bpm@sgi.com>
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