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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2010-12-15 08:59:11 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-03-10 11:43:19 +0100 |
| commit | 19f843aa08e2d8f87a09b4c2edc43b00638423a8 (patch) | |
| tree | 49919bd17ba7e03eb7cb76175910714d55704997 /drivers/block/drbd/drbd_worker.c | |
| parent | 95a0f10cddbf93ce89c175ac1c53dad2d20ad309 (diff) | |
| download | linux-19f843aa08e2d8f87a09b4c2edc43b00638423a8.tar.gz linux-19f843aa08e2d8f87a09b4c2edc43b00638423a8.tar.bz2 linux-19f843aa08e2d8f87a09b4c2edc43b00638423a8.zip | |
drbd: bitmap keep track of changes vs on-disk bitmap
When we set or clear bits in a bitmap page,
also set a flag in the page->private pointer.
This allows us to skip writes of unchanged pages.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_worker.c')
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 9fe3e890da0f..d17f2ed777ce 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -907,10 +907,8 @@ out: drbd_md_sync(mdev); - if (test_and_clear_bit(WRITE_BM_AFTER_RESYNC, &mdev->flags)) { - dev_info(DEV, "Writing the whole bitmap\n"); - drbd_queue_bitmap_io(mdev, &drbd_bm_write, NULL, "write from resync_finished"); - } + dev_info(DEV, "Writing changed bitmap pages\n"); + drbd_queue_bitmap_io(mdev, &drbd_bm_write, NULL, "write from resync_finished"); if (khelper_cmd) drbd_khelper(mdev, khelper_cmd); @@ -1127,7 +1125,6 @@ void drbd_ov_oos_found(struct drbd_conf *mdev, sector_t sector, int size) mdev->ov_last_oos_size = size>>9; } drbd_set_out_of_sync(mdev, sector, size); - set_bit(WRITE_BM_AFTER_RESYNC, &mdev->flags); } int w_e_end_ov_reply(struct drbd_conf *mdev, struct drbd_work *w, int cancel) |