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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2013-12-20 11:39:48 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2014-07-10 18:34:49 +0200 |
| commit | c7a58db4e9dc523b18bbfbc3aa311d8308acc293 (patch) | |
| tree | 0860df4c69658c43adb83bd690b6d54a964ef9f2 /drivers/block/drbd/drbd_int.h | |
| parent | drbd: allow write-ordering policy to be bumped up again (diff) | |
| download | linux-c7a58db4e9dc523b18bbfbc3aa311d8308acc293.tar.xz linux-c7a58db4e9dc523b18bbfbc3aa311d8308acc293.zip | |
drbd: get rid of atomic update on disk bitmap works
Just trigger the occasional lazy bitmap write-out during resync
from the central wait_for_work() helper.
Previously, during resync, bitmap pages would be written out separately,
synchronously, one at a time, at least 8 times each (every 512 bytes
worth of bitmap cleared).
Now we trigger "merge friendly" bulk write out of all cleared pages
every two seconds during resync, and once the resync is finished.
Most pages will be written out only once.
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_int.h')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 82ece1b1a701..eb002a7656af 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1196,11 +1196,11 @@ extern void _drbd_bm_set_bits(struct drbd_device *device, const unsigned long s, const unsigned long e); extern int drbd_bm_test_bit(struct drbd_device *device, unsigned long bitnr); extern int drbd_bm_e_weight(struct drbd_device *device, unsigned long enr); -extern int drbd_bm_write_page(struct drbd_device *device, unsigned int idx) __must_hold(local); extern int drbd_bm_read(struct drbd_device *device) __must_hold(local); extern void drbd_bm_mark_for_writeout(struct drbd_device *device, int page_nr); extern int drbd_bm_write(struct drbd_device *device) __must_hold(local); extern int drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local); +extern int drbd_bm_write_lazy(struct drbd_device *device, unsigned upper_idx) __must_hold(local); extern int drbd_bm_write_all(struct drbd_device *device) __must_hold(local); extern int drbd_bm_write_copy_pages(struct drbd_device *device) __must_hold(local); extern size_t drbd_bm_words(struct drbd_device *device); |