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由 James Bottomley 提交于
xfs_buf.c includes what is essentially a hand rolled version of blk_rq_map_kern(). In order to work properly with the vmalloc buffers that xfs uses, this hand rolled routine must also implement the flushing API for vmap/vmalloc areas. [style updates from hch@lst.de] Acked-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>
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