path: root/fs/fuse
diff options
authorMiklos Szeredi <>2008-05-23 13:04:19 -0700
committerLinus Torvalds <>2008-05-24 09:56:07 -0700
commit03fb0bce01490c9bdedad861962c76f987531014 (patch)
tree882f233f910b40042c9ce7f026e373e797647e04 /fs/fuse
parent42172d751b4596b8ca4346a1c251b5f1c661ab0c (diff)
fuse: fix bdi naming conflict
Fuse allocates a separate bdi for each filesystem, and registers them in sysfs with "MAJOR:MINOR" of sb->s_dev (st_dev). This works fine for anon devices normally used by fuse, but can conflict with an already registered BDI for "fuseblk" filesystems, where sb->s_dev represents a real block device. In particularl this happens if a non-partitioned device is being mounted. Fix by registering with a different name for "fuseblk" filesystems. Thanks to Ioan Ionita for the bug report. Signed-off-by: Miklos Szeredi <> Reported-by: Ioan Ionita <> Tested-by: Ioan Ionita <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'fs/fuse')
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index fb77e096213..43e99513334 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -488,7 +488,12 @@ static struct fuse_conn *new_conn(struct super_block *sb)
err = bdi_init(&fc->bdi);
if (err)
goto error_kfree;
- err = bdi_register_dev(&fc->bdi, fc->dev);
+ if (sb->s_bdev) {
+ err = bdi_register(&fc->bdi, NULL, "%u:%u-fuseblk",
+ MAJOR(fc->dev), MINOR(fc->dev));
+ } else {
+ err = bdi_register_dev(&fc->bdi, fc->dev);
+ }
if (err)
goto error_bdi_destroy;