Commit 6de94002 authored Apr 22, 2010 by Jörn Engel Committed by Jens Axboe Apr 22, 2010

Fix JFFS2 sync silent failure



JFFS2 does not appear to set s_bdi anywhere.  And as of 32a88aa1,
__sync_filesystem() will return 0 if s_bdi is not set.  As a result,
sync_fs() is never called for jffs2 and whatever remains in the wbuf
will not make it to the device.

Fix that up by assigning the mtd bdi.

Signed-off-by: Jörn Engel <joern@logfs.org>
Acked-By: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent 424264b7

drivers/mtd/mtdsuper.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -13,6 +13,7 @@
		#include <linux/mtd/super.h>
		#include <linux/namei.h>
		#include <linux/ctype.h>
		#include <linux/slab.h>

		/*
		* compare superblocks to see if they're equivalent
		@@ -44,6 +45,7 @@ static int get_sb_mtd_set(struct super_block sb, void _mtd)

		sb->s_mtd = mtd;
		sb->s_dev = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
		sb->s_bdi = mtd->backing_dev_info;
		return 0;
		}