On Dec 7, 2007 12:42 AM, NeilBrown <[email protected]> wrote:
>
> Currently and md array with a write-intent bitmap does not updated
> that bitmap to reflect successful partial resync. Rather the entire
> bitmap is updated when the resync completes.
>
> This is because there is no guarentee that resync requests will
> complete in order, and tracking each request individually is
> unnecessarily burdensome.
>
> However there is value in regularly updating the bitmap, so add code
> to periodically pause while all pending sync requests complete, then
> update the bitmap. Doing this only every few seconds (the same as the
> bitmap update time) does not notciably affect resync performance.
>
> Signed-off-by: Neil Brown <[email protected]>
Hi Neil,
You forgot to export bitmap_cond_end_sync. Please see the attached patch.
regards,
Mike
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index f31ea4f..b596538 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1566,3 +1566,4 @@ EXPORT_SYMBOL(bitmap_start_sync);
EXPORT_SYMBOL(bitmap_end_sync);
EXPORT_SYMBOL(bitmap_unplug);
EXPORT_SYMBOL(bitmap_close_sync);
+EXPORT_SYMBOL(bitmap_cond_end_sync);
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