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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-06-14 14:18:23 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-06-30 09:23:43 +0200 |
| commit | 5a8b424276f7ba50c51e7caf485b2be23739e5b8 (patch) | |
| tree | 001a7250e631db20a5bc3d9fd667dc8a817d9c1f /drivers/block | |
| parent | 8ccee20e3ef4e12dbf02a18f17d386569b1f73ee (diff) | |
| download | kernel_samsung_smdk4412-5a8b424276f7ba50c51e7caf485b2be23739e5b8.zip kernel_samsung_smdk4412-5a8b424276f7ba50c51e7caf485b2be23739e5b8.tar.gz kernel_samsung_smdk4412-5a8b424276f7ba50c51e7caf485b2be23739e5b8.tar.bz2 | |
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/block')
| -rw-r--r-- | drivers/block/drbd/drbd_bitmap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c index 61f4fae..7b97629 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); } } |