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authorLars Ellenberg <lars.ellenberg@linbit.com>2011-06-14 14:18:23 +0200
committerPhilipp Reisner <philipp.reisner@linbit.com>2011-06-30 09:23:43 +0200
commit5a8b424276f7ba50c51e7caf485b2be23739e5b8 (patch)
tree001a7250e631db20a5bc3d9fd667dc8a817d9c1f /drivers
parent8ccee20e3ef4e12dbf02a18f17d386569b1f73ee (diff)
downloadlinux-5a8b424276f7ba50c51e7caf485b2be23739e5b8.tar.gz
drbd: account bitmap IO during resync as resync-(related-)-io
If we have a good resync rate, we will frequently update the on-disk bitmap, which, if not accounted for as resync io, may let an otherwise idle device appear to be "busy", and cause us to throttle resync. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/drbd/drbd_bitmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 61f4fae9f67e..7b976296b564 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -991,6 +991,9 @@ static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must
bio_endio(bio, -EIO);
} else {
submit_bio(rw, bio);
+ /* this should not count as user activity and cause the
+ * resync to throttle -- see drbd_rs_should_slow_down(). */
+ atomic_add(len >> 9, &mdev->rs_sect_ev);
}
}