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(parent: ac9fde2) | patch
vhost/scsi: use vmalloc for order-10 allocation
authorMichael S. Tsirkin <mst@redhat.com>
Tue, 17 Sep 2013 06:30:34 +0000 (09:30 +0300)
committerMichael S. Tsirkin <mst@redhat.com>
Tue, 17 Sep 2013 19:55:46 +0000 (22:55 +0300)
commit595cb754983d4387cb25b3dcf08f5129663d634e
treefbd228ea66ec0cf53681efb952fc084a8b6603f0tree | snapshot
parentac9fde2474d04bd6574a037482e3de02b488a6c6commit | diff
vhost/scsi: use vmalloc for order-10 allocation

As vhost scsi device struct is large, if the device is
created on a busy system, kzalloc() might fail, so this patch does a
fallback to vzalloc().

As vmalloc() adds overhead on data-path, add __GFP_REPEAT
to kzalloc() flags to do this fallback only when really needed.

Reviewed-by: Asias He <asias@redhat.com>
Reported-by: Dan Aloni <alonid@stratoscale.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/vhost/scsi.c diff | blob | history
Domain: System / Uncategorized;