tune2fs: only set the superblock as dirty if the default group is mod…

…ified Similar to commit 2eb3b20, it speeds up `tunefs -g` command when the group argument is identical. Signed-off-by: Theodore Ts'o <[email protected]> Link: https://lore.kernel.org/r/[email protected]
tytso · Oct 25, 2024 · 2c1e554 · 2c1e554
1 parent 9448aed
commit 2c1e554
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
@@ -3381,9 +3381,13 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
 		printf(_("Setting error behavior to %d\n"), errors);
 	}
 	if (g_flag) {
-		sb->s_def_resgid = resgid;
-		ext2fs_mark_super_dirty(fs);
-		printf(_("Setting reserved blocks gid to %lu\n"), resgid);
+		if (sb->s_def_resgid != resgid) {
+			sb->s_def_resgid = resgid;
+			ext2fs_mark_super_dirty(fs);
+			printf(_("Setting reserved blocks gid to %lu\n"), resgid);
+		} else {
+			printf(_("Reserved blocks gid already set to %lu\n"), resgid);
+		}
 	}
 	if (i_flag) {
 		if ((unsigned long long)interval >= (1ULL << 32)) {