ext4: only call sync_filesystm() when remounting read-only
This is the only time it is required for ext4.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a5f1170..89baee4 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4765,8 +4765,6 @@
#endif
char *orig_data = kstrdup(data, GFP_KERNEL);
- sync_filesystem(sb);
-
/* Store the original options */
old_sb_flags = sb->s_flags;
old_opts.s_mount_opt = sbi->s_mount_opt;
@@ -4837,6 +4835,9 @@
}
if (*flags & MS_RDONLY) {
+ err = sync_filesystem(sb);
+ if (err < 0)
+ goto restore_opts;
err = dquot_suspend(sb, -1);
if (err < 0)
goto restore_opts;