From ab0b4a3ebf145f54dc23b66a411f4bbbc59b0d96 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 16 Oct 2020 11:29:16 -0400 Subject: [PATCH] btrfs: add a helper to print out rescue= options We're going to have a lot of rescue options, add a helper to collapse the /proc/mounts output to rescue=option1:option2:option3 format. Reviewed-by: Johannes Thumshirn Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/super.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index f99e89ec..c5095a2 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1392,11 +1392,18 @@ int btrfs_sync_fs(struct super_block *sb, int wait) return btrfs_commit_transaction(trans); } +static void print_rescue_option(struct seq_file *seq, const char *s, bool *printed) +{ + seq_printf(seq, "%s%s", (*printed) ? ":" : ",rescue=", s); + *printed = true; +} + static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) { struct btrfs_fs_info *info = btrfs_sb(dentry->d_sb); const char *compress_type; const char *subvol_name; + bool printed = false; if (btrfs_test_opt(info, DEGRADED)) seq_puts(seq, ",degraded"); @@ -1429,7 +1436,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) if (btrfs_test_opt(info, NOTREELOG)) seq_puts(seq, ",notreelog"); if (btrfs_test_opt(info, NOLOGREPLAY)) - seq_puts(seq, ",rescue=nologreplay"); + print_rescue_option(seq, "nologreplay", &printed); if (btrfs_test_opt(info, FLUSHONCOMMIT)) seq_puts(seq, ",flushoncommit"); if (btrfs_test_opt(info, DISCARD_SYNC)) -- 2.7.4