From: NeilBrown <neilb@suse.de>
Date: Sat, 26 Jun 2010 04:24:47 +0000 (+1000)
Subject: Make sure we io_wait when we clear B_Writeback
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=e75fabdf079f3305a3b1450fc38d52572a8ff9d1;p=LaFS.git

Make sure we io_wait when we clear B_Writeback

There was one path where we didn't.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/io.c b/io.c
index 0bbeb21..b6837f5 100644
--- a/io.c
+++ b/io.c
@@ -237,12 +237,11 @@ void lafs_writeback_done(struct block *b)
 	 * If it is last on page, release page as well.
 	 */
 
-	if (test_bit(B_Index, &b->flags))
+	if (test_bit(B_Index, &b->flags)) {
 		clear_bit(B_Writeback, &b->flags);
-	else
+		lafs_io_wake(b);
+	} else
 		lafs_iocheck_writeback(dblk(b), 1);
-
-	lafs_io_wake(b);
 }
 
 void lafs_iocheck_block(struct datablock *db, int unlock)
@@ -308,6 +307,8 @@ void lafs_iocheck_writeback(struct datablock *db, int unlock)
 
 	if (havewrite)
 		end_page_writeback(page);
+	if (unlock)
+		lafs_io_wake(&db->b);
 }
 
 int __must_check