From 8368e328dfe1c534957051333a87b3210a12743b Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@woody.osdl.org>
Date: Sat, 23 Dec 2006 09:25:04 -0800
Subject: [PATCH] Clean up and export cancel_dirty_page() to modules

Make cancel_dirty_page() act more like all the other dirty and writeback
accounting functions: test for "mapping" being NULL, and do the
NR_FILE_DIRY accounting purely based on mapping_cap_account_dirty()).

Also, add it to the exports, so that modular filesystems can use it.

Acked-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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