bcachefs: Handle weird opt string from sys_fsconfig()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/opts.c b/fs/bcachefs/opts.c
index 4d0daeba6f597212228cd3c2beba12c27eaa9ff6..960bb247f3a0ab8b84c64e8f439738ffdf76b3b6 100644 (file)
--- a/fs/bcachefs/opts.c
+++ b/fs/bcachefs/opts.c
@@ -445,6 +445,13 @@ int bch2_parse_mount_opts(struct bch_fs *c, struct bch_opts *opts,
        if (!options)
                return 0;
 
+       /*
+        * sys_fsconfig() is now occasionally providing us with option lists
+        * starting with a comma - weird.
+        */
+       if (*options == ',')
+               options++;
+
        copied_opts = kstrdup(options, GFP_KERNEL);
        if (!copied_opts)
                return -1;