linux-kernel - [PATCH 10/11] vfs: Export wakeup

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Message-Id: <1243429268-3028-11-git-send-email-jack@suse.cz>
Date:	Wed, 27 May 2009 15:01:07 +0200
From:	Jan Kara <jack@...e.cz>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	npiggin@...e.de, linux-ext4@...r.kernel.org,
	Jan Kara <jack@...e.cz>
Subject: [PATCH 10/11] vfs: Export wakeup_pdflush

When we are running out of free space on a filesystem, we want to flush dirty
pages in the filesystem so that blocks reserved via delayed allocation get
written and unnecessary block reservation is released. Export wakeup_pdflush()
so that filesystem can start such writeback.

Signed-off-by: Jan Kara <jack@...e.cz>
---
 mm/page-writeback.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index bb553c3..43af1cf 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -730,6 +730,7 @@ int wakeup_pdflush(long nr_pages)
 				global_page_state(NR_UNSTABLE_NFS);
 	return pdflush_operation(background_writeout, nr_pages);
 }
+EXPORT_SYMBOL(wakeup_pdflush);
 
 static void wb_timer_fn(unsigned long unused);
 static void laptop_timer_fn(unsigned long unused);
-- 
1.6.0.2

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