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authorMiklos Szeredi <mszeredi@suse.cz>2008-05-23 16:04:19 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-24 12:56:07 -0400
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 <mszeredi@suse.cz> Reported-by: Ioan Ionita <opslynx@gmail.com> Tested-by: Ioan Ionita <opslynx@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fuse')
-rw-r--r--fs/fuse/inode.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index fb77e0962132..43e99513334a 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)
488 err = bdi_init(&fc->bdi); 488 err = bdi_init(&fc->bdi);
489 if (err) 489 if (err)
490 goto error_kfree; 490 goto error_kfree;
491 err = bdi_register_dev(&fc->bdi, fc->dev); 491 if (sb->s_bdev) {
492 err = bdi_register(&fc->bdi, NULL, "%u:%u-fuseblk",
493 MAJOR(fc->dev), MINOR(fc->dev));
494 } else {
495 err = bdi_register_dev(&fc->bdi, fc->dev);
496 }
492 if (err) 497 if (err)
493 goto error_bdi_destroy; 498 goto error_bdi_destroy;
494 /* 499 /*