[PATCH 14/60] block: drbd: comment on direct access bvec table
From: Ming Lei <tom.leiming@gmail.com>
Date: 2016-10-29 08:12:57
Also in:
linux-fsdevel, lkml
Subsystem:
block layer, drbd driver, the rest · Maintainers:
Jens Axboe, Philipp Reisner, Lars Ellenberg, Christoph Böhmwalder, Linus Torvalds
Signed-off-by: Ming Lei <tom.leiming@gmail.com> --- drivers/block/drbd/drbd_bitmap.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index ab62b81c2ca7..ce9506da30ad 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c@@ -953,6 +953,7 @@ static void drbd_bm_endio(struct bio *bio) struct drbd_bm_aio_ctx *ctx = bio->bi_private; struct drbd_device *device = ctx->device; struct drbd_bitmap *b = device->bitmap; + /* single page bio, safe for multipage bvec */ unsigned int idx = bm_page_to_idx(bio->bi_io_vec[0].bv_page); if ((ctx->flags & BM_AIO_COPY_PAGES) == 0 &&
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2.7.4