Add some logging to the core users of the fs_context log so that information can be extracted from them as to the reason for failure. Signed-off-by: David Howells <dhowells@xxxxxxxxxx> --- fs/super.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/super.c b/fs/super.c index 06a665628939..447476d4371c 100644 --- a/fs/super.c +++ b/fs/super.c @@ -1743,8 +1743,10 @@ int vfs_get_tree(struct fs_context *fc) struct super_block *sb; int ret; - if (fc->fs_type->fs_flags & FS_REQUIRES_DEV && !fc->source) + if (fc->fs_type->fs_flags & FS_REQUIRES_DEV && !fc->source) { + errorf(fc, "Filesystem requires source device"); return -ENOENT; + } if (fc->root) return -EBUSY;