Seems this was resolved in 4.12-rc2, mounting ntfs-3g volumes is fine,
doesn't generate a kernel warning! It was fixed in fs/fuse/inode.c at
https://github.com/torvalds/linux/commit/69c8ebf83213e6165b13d94ec599b861467ee2dc
with
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 5a1b58f..65c8837 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -975,8 +975,15 @@ static int fuse_bdi_init(struct fuse_conn *fc, struct
super_block *sb)
int err;
char *suffix = "";
- if (sb->s_bdev)
+ if (sb->s_bdev) {
suffix = "-fuseblk";
+ /*
+ * sb->s_bdi points to blkdev's bdi however we want to redirect
+ * it to our private bdi...
+ */
+ bdi_put(sb->s_bdi);
+ sb->s_bdi = &noop_backing_dev_info;
+ }
err = super_setup_bdi_name(sb, "%u:%u%s", MAJOR(fc->dev),
MINOR(fc->dev), suffix);
if (err)
** No longer affects: fuse (Ubuntu)
** No longer affects: ntfs-3g (Ubuntu)
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https://bugs.launchpad.net/bugs/1692143
Title:
fs changes in kernel 4.12 break mount of ntfs-3g, possible data
corruption
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