[PATCH 01/27] writeback: add bdi_dirty_limit() kernel-doc
From: Wu Fengguang <hidden>
Date: 2011-03-03 06:45:06
Also in:
linux-fsdevel, lkml
Clarify the bdi_dirty_limit() comment. Signed-off-by: Wu Fengguang <redacted> --- mm/page-writeback.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
--- linux-next.orig/mm/page-writeback.c 2011-03-03 14:38:12.000000000 +0800
+++ linux-next/mm/page-writeback.c 2011-03-03 14:40:52.000000000 +0800@@ -437,10 +437,17 @@ void global_dirty_limits(unsigned long * *pdirty = dirty; } -/* +/** * bdi_dirty_limit - @bdi's share of dirty throttling threshold + * @bdi: the backing_dev_info to query + * @dirty: global dirty limit in pages + * + * Returns @bdi's dirty limit in pages. The term "dirty" in the context of + * dirty balancing includes all PG_dirty, PG_writeback and NFS unstable pages. + * And the "limit" in the name is not seriously taken as hard limit in + * balance_dirty_pages(). * - * Allocate high/low dirty limits to fast/slow devices, in order to prevent + * It allocates high/low dirty limits to fast/slow devices, in order to prevent * - starving fast devices * - piling up dirty pages (that will take long time to sync) on slow devices * --
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