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authorChristoph Hellwig <hch@lst.de>2015-02-11 16:07:49 +0300
committerJens Axboe <axboe@fb.com>2015-02-11 21:24:12 +0300
commita0763b27bf24f028d8b049ad856b2ee031fb475d (patch)
tree7fba607dd8e679b6ee787b0c5257d7461c1bd8f5 /block/blk-merge.c
parent564e559f2baf6a868768d0cac286980b3cfd6e30 (diff)
downloadlinux-a0763b27bf24f028d8b049ad856b2ee031fb475d.tar.xz
block: handle the null_mapped flag correctly in blk_rq_map_user_iov
The tape drivers (and the sg driver in a special case that doesn't matter here) use the null_mapped flag to tell blk_rq_map_user to not copy around any data into or out of the bounce buffers. blk_rq_map_user_iov never got that treatment, which didn't matter until I refactored blk_rq_map_user to be implemented in terms of blk_rq_map_user_iov. Signed-off-by: Christoph Hellwig <hch@lst.de> Fixes: ddad8dd0a162 ("block: use blk_rq_map_user_iov to implement blk_rq_map_user") Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-merge.c')
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