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H A D | bio.c | 1cfd0ddd Sun Sep 24 09:21:15 CDT 2017 Al Viro <viro@zeniv.linux.org.uk> bio_copy_user_iov(): don't ignore ->iov_offset
Since "block: support large requests in blk_rq_map_user_iov" we started to call it with partially drained iter; that works fine on the write side, but reads create a copy of iter for completion time. And that needs to take the possibility of ->iov_iter != 0 into account...
Cc: stable@vger.kernel.org #v4.5+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 1cfd0ddd Sun Sep 24 09:21:15 CDT 2017 Al Viro <viro@zeniv.linux.org.uk> bio_copy_user_iov(): don't ignore ->iov_offset Since "block: support large requests in blk_rq_map_user_iov" we started to call it with partially drained iter; that works fine on the write side, but reads create a copy of iter for completion time. And that needs to take the possibility of ->iov_iter != 0 into account... Cc: stable@vger.kernel.org #v4.5+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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