diff options
Diffstat (limited to 'drivers/block/drbd/drbd_bitmap.c')
| -rw-r--r-- | drivers/block/drbd/drbd_bitmap.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c index 33626e34c92a..4a076b2553e6 100644 --- a/drivers/block/drbd/drbd_bitmap.c +++ b/drivers/block/drbd/drbd_bitmap.c @@ -922,6 +922,7 @@ struct bm_aio_ctx { unsigned flags; #define BM_AIO_COPY_PAGES 1 #define BM_AIO_WRITE_HINTED 2 +#define BM_WRITE_ALL_PAGES 4 int error; struct kref kref; }; @@ -1096,7 +1097,9 @@ static int bm_rw(struct drbd_conf *mdev, int rw, unsigned flags, unsigned lazy_w !test_and_clear_bit(BM_PAGE_HINT_WRITEOUT, &page_private(b->bm_pages[i]))) continue; - if (bm_test_page_unchanged(b->bm_pages[i])) { + + if (!(flags & BM_WRITE_ALL_PAGES) && + bm_test_page_unchanged(b->bm_pages[i])) { dynamic_dev_dbg(DEV, "skipped bm write for idx %u\n", i); continue; } @@ -1181,6 +1184,17 @@ int drbd_bm_write(struct drbd_conf *mdev) __must_hold(local) } /** + * drbd_bm_write_all() - Write the whole bitmap to its on disk location. + * @mdev: DRBD device. + * + * Will write all pages. + */ +int drbd_bm_write_all(struct drbd_conf *mdev) __must_hold(local) +{ + return bm_rw(mdev, WRITE, BM_WRITE_ALL_PAGES, 0); +} + +/** * drbd_bm_lazy_write_out() - Write bitmap pages 0 to @upper_idx-1, if they have changed. * @mdev: DRBD device. * @upper_idx: 0: write all changed pages; +ve: page index to stop scanning for changed pages |