btrfs: avoid access to .bi_vcnt directly

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BTRFS uses bio->bi_vcnt to figure out page numbers, this approach is no
longer valid once we start enabling multipage bvecs.
correct once we start to enable multipage bvec.

Use bio_nr_pages() to do that instead.

Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: David Sterba <dsterba@suse.com>
Cc: linux-btrfs@vger.kernel.org
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Ming Lei 2017-12-18 20:22:11 +08:00 • committed by Jens Axboe

parent 25d8be77e1

commit a0b60d725e

2 changed files with 6 additions and 5 deletions

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9

fs/btrfs/extent_io.c

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2

fs/btrfs/extent_io.h

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