[RFC PATCH 02/14] btrfs-progs: migrate subvolume delete to global verbose

[Anand Jain <anand.jain@oracle.com>]

btrfs subvolume delete already supports verbose at the sub-command
level, this patch restores same verbose which can be either enabled
by the sub-command or from the top level command.

Suggested-by: David Sterba <dsterba@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 cmds/subvolume.c | 35 +++++++++++++++++------------------
 1 file changed, 17 insertions(+), 18 deletions(-)

diff --git a/cmds/subvolume.c b/cmds/subvolume.c
index 7a5fd79bb1f3..18efd0cf6e4a 100644
--- a/cmds/subvolume.c
+++ b/cmds/subvolume.c
@@ -43,6 +43,8 @@
 #include "common/path-utils.h"
 #include "common/device-scan.h"
 
+extern bool global_verbose;
+
 static int wait_for_subvolume_cleaning(int fd, size_t count, uint64_t *ids,
 				       int sleep_interval)
 {
@@ -231,9 +233,9 @@ static const char * const cmd_subvol_delete_usage[] = {
 	"after a crash). Use one of the --commit options to wait until the",
 	"operation is safely stored on the media.",
 	"",
-	"-c|--commit-after      wait for transaction commit at the end of the operation",
-	"-C|--commit-each       wait for transaction commit after deleting each subvolume",
-	"-v|--verbose           verbose output of operations",
+	"-c|--commit-after  wait for transaction commit at the end of the operation",
+	"-C|--commit-each   wait for transaction commit after deleting each subvolume",
+	HELPINFO_INSERT_VERBOSE,
 	NULL
 };
 
@@ -248,7 +250,6 @@ static int cmd_subvol_delete(const struct cmd_struct *cmd,
 	char	*dupvname = NULL;
 	char	*path;
 	DIR	*dirstream = NULL;
-	int verbose = 0;
 	int commit_mode = 0;
 	u8 fsid[BTRFS_FSID_SIZE];
 	char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
@@ -278,7 +279,7 @@ static int cmd_subvol_delete(const struct cmd_struct *cmd,
 			commit_mode = COMMIT_EACH;
 			break;
 		case 'v':
-			verbose++;
+			global_verbose = true;
 			break;
 		default:
 			usage_unknown_option(cmd, argv);
@@ -288,11 +289,9 @@ static int cmd_subvol_delete(const struct cmd_struct *cmd,
 	if (check_argc_min(argc - optind, 1))
 		return 1;
 
-	if (verbose > 0) {
-		printf("Transaction commit: %s\n",
-			!commit_mode ? "none (default)" :
-			commit_mode == COMMIT_AFTER ? "at the end" : "after each");
-	}
+	pr_verbose(global_verbose, "Transaction commit: %s\n",
+		   !commit_mode ? "none (default)" :
+		   commit_mode == COMMIT_AFTER ? "at the end" : "after each");
 
 	cnt = optind;
 
@@ -353,11 +352,10 @@ again:
 		}
 
 		if (add_seen_fsid(fsid, seen_fsid_hash, fd, dirstream) == 0) {
-			if (verbose > 0) {
-				uuid_unparse(fsid, uuidbuf);
-				printf("  new fs is found for '%s', fsid: %s\n",
-						path, uuidbuf);
-			}
+			uuid_unparse(fsid, uuidbuf);
+			pr_verbose(global_verbose,
+				   "  new fs is found for '%s', fsid: %s\n",
+				   path, uuidbuf);
 			/*
 			 * This is the first time a subvolume on this
 			 * filesystem is deleted, keep fd in order to issue
@@ -398,10 +396,11 @@ keep_fd:
 			"unable to do final sync after deletion: %m, fsid: %s",
 						uuidbuf);
 					ret = 1;
-				} else if (verbose > 0) {
+				} else {
 					uuid_unparse(seen->fsid, uuidbuf);
-					printf("final sync is done for fsid: %s\n",
-						uuidbuf);
+					pr_verbose(global_verbose,
+						   "final sync is done for fsid: %s\n",
+						   uuidbuf);
 				}
 				seen = seen->next;
 			}
-- 
1.8.3.1