| commit | d3bc1fef9389e409a772ea174a5e41a6f93d9b7b | [log] [tgz] |
|---|---|---|
| author | Wu Fengguang <fengguang.wu@intel.com> | Thu Apr 14 07:52:37 2011 -0600 |
| committer | Wu Fengguang <fengguang.wu@intel.com> | Sun Dec 18 14:20:22 2011 +0800 |
| tree | d1e47354263b7c930a7ec4428909693d10a10c50 | |
| parent | 54848d73f9f254631303d6eab9b976855988b266 [diff] |
writeback: fix dirtied pages accounting on sub-page writes When dd in 512bytes, generic_perform_write() calls balance_dirty_pages_ratelimited() 8 times for the same page, but obviously the page is only dirtied once. Fix it by accounting tsk->nr_dirtied and bdp_ratelimits at page dirty time. Acked-by: Jan Kara <jack@suse.cz> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>