]> git.karo-electronics.de Git - karo-tx-linux.git/commit
projects / karo-tx-linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 17e6a23) | patch
writeback: fix dirtied pages accounting on sub-page writes
authorWu Fengguang <fengguang.wu@intel.com>
Thu, 14 Apr 2011 13:52:37 +0000 (07:52 -0600)
committerWu Fengguang <fengguang.wu@intel.com>
Mon, 5 Dec 2011 06:06:30 +0000 (14:06 +0800)
commitd35dbc99d9d7aca925ab532f579c6607e6315964
tree15095b41700f4358118474db0b79218fcba6cd70tree | snapshot
parent17e6a2367f485c30c9a3ca557d4538bff4cd682bcommit | 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: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
mm/page-writeback.c diff | blob | history
Linux kernel for KaRo TX COM modules