Commit 578270bf authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe

block: fix segment split

Inside blk_bio_segment_split(), previous bvec pointer(bvprvp)
always points to the iterator local variable, which is obviously
wrong, so fix it by pointing to the local variable of 'bvprv'.

Fixes: 5014c311(block: fix bogus compiler warnings in blk-merge.c)
Cc: stable@kernel.org #4.3
Reported-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Reported-by: default avatarMark Salter <msalter@redhat.com>
Tested-by: default avatarLaurent Dufour <ldufour@linux.vnet.ibm.com>
Tested-by: default avatarMark Salter <msalter@redhat.com>
Signed-off-by: default avatarMing Lei <ming.lei@canonical.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent b094f89c
......@@ -98,7 +98,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
seg_size += bv.bv_len;
bvprv = bv;
bvprvp = &bv;
bvprvp = &bvprv;
sectors += bv.bv_len >> 9;
continue;
}
......@@ -108,7 +108,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
nsegs++;
bvprv = bv;
bvprvp = &bv;
bvprvp = &bvprv;
seg_size = bv.bv_len;
sectors += bv.bv_len >> 9;
}
......
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