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Fix JFFS2 sync silent failure

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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 <[email protected]>
Acked-By: David Woodhouse <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jörn Engel 2010-04-22 14:11:43 +02:00 • committed by Jens Axboe
commit 6de9400250
1 changed files with 2 additions and 0 deletions
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2
drivers/mtd/mtdsuper.c
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@ -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;
}