dma-direct: improve addressability error reporting

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Only report report a DMA addressability report once to avoid spewing the
kernel log with repeated message.  Also provide a stack trace to make it
easy to find the actual caller that caused the problem.

Last but not least move the actual check into the fast path and only
leave the error reporting in a helper.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>

...

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Christoph Hellwig 2018-12-03 07:43:05 +01:00

parent 68c608345c

commit 58dfd4ac02

1 changed files with 15 additions and 21 deletions

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kernel/dma/direct.c

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