xfs: fallback to vmalloc for large buffers in xfs_attrmulti_attr_get

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xfsdump uses for 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.

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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Dave Chinner 2012-03-07 04:50:21 +00:00 • committed by Ben Myers

parent 6eb2466036

commit ad650f5b27

1 changed files with 10 additions and 4 deletions

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fs/xfs/xfs_ioctl.c

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