From: Joern Engel <joern@logfs.org>
Date: Sat, 17 Apr 2010 17:54:27 +0000 (+0200)
Subject: [LogFS] Set s_bdi
X-Git-Tag: v2.6.34-rc6~76^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8639077abf034824046ed09e779b74c4393031f;p=platform%2Fupstream%2Fkernel-adaptation-pc.git

[LogFS] Set s_bdi

Since 32a88aa1 sync() was turned into a NOP for logfs.  Worse, sync()
would not return an error, giving the illusion that writeout had
actually happened.

Afaics jffs2 was broken as well.

Signed-off-by: Joern Engel <joern@logfs.org>
---

diff --git a/fs/logfs/super.c b/fs/logfs/super.c
index d4531eb..dacce3a 100644
--- a/fs/logfs/super.c
+++ b/fs/logfs/super.c
@@ -11,6 +11,7 @@
  */
 #include "logfs.h"
 #include <linux/bio.h>
+#include <linux/blkdev.h>
 #include <linux/mtd/mtd.h>
 #include <linux/statfs.h>
 #include <linux/buffer_head.h>
@@ -136,6 +137,10 @@ static int logfs_sb_set(struct super_block *sb, void *_super)
 	sb->s_fs_info = super;
 	sb->s_mtd = super->s_mtd;
 	sb->s_bdev = super->s_bdev;
+	if (sb->s_bdev)
+		sb->s_bdi = &bdev_get_queue(sb->s_bdev)->backing_dev_info;
+	if (sb->s_mtd)
+		sb->s_bdi = sb->s_mtd->backing_dev_info;
 	return 0;
 }