[PATCH 14/60] block: drbd: comment on direct access bvec table

From	Ming Lei <tom.leiming@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH 14/60] block: drbd: comment on direct access bvec table
Date	2016-10-29 10:20 +0200
Message-ID	<sxx1U-3GR-1@gated-at.bofh.it> (permalink)
References	<sxx1U-3GR-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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 &&
-- 
2.7.4

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[PATCH 14/60] block: drbd: comment on direct access bvec table Ming Lei <tom.leiming@gmail.com> - 2016-10-29 10:20 +0200

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