---

yaml
---
r: 140332
b: refs/heads/master
c: a9572a1
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fa9c0d795f7b57c76560b7fac703f5d341210e28
+refs/heads/master: a9572a15a854bd40453a6b7b4dd9d29132f64c64

trunk/fs/btrfs/super.c

@@ -24,6 +24,7 @@
 #include <linux/highmem.h>
 #include <linux/time.h>
 #include <linux/init.h>
+#include <linux/seq_file.h>
 #include <linux/string.h>
 #include <linux/smp_lock.h>
 #include <linux/backing-dev.h>
@@ -385,6 +386,37 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
 	return ret;
 }
 
+static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
+{
+	struct btrfs_root *root = btrfs_sb(vfs->mnt_sb);
+	struct btrfs_fs_info *info = root->fs_info;
+
+	if (btrfs_test_opt(root, DEGRADED))
+		seq_puts(seq, ",degraded");
+	if (btrfs_test_opt(root, NODATASUM))
+		seq_puts(seq, ",nodatasum");
+	if (btrfs_test_opt(root, NODATACOW))
+		seq_puts(seq, ",nodatacow");
+	if (btrfs_test_opt(root, NOBARRIER))
+		seq_puts(seq, ",nobarrier");
+	if (info->max_extent != (u64)-1)
+		seq_printf(seq, ",max_extent=%llu", info->max_extent);
+	if (info->max_inline != 8192 * 1024)
+		seq_printf(seq, ",max_inline=%llu", info->max_inline);
+	if (info->alloc_start != 0)
+		seq_printf(seq, ",alloc_start=%llu", info->alloc_start);
+	if (info->thread_pool_size !=  min_t(unsigned long,
+					     num_online_cpus() + 2, 8))
+		seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
+	if (btrfs_test_opt(root, COMPRESS))
+		seq_puts(seq, ",compress");
+	if (btrfs_test_opt(root, SSD))
+		seq_puts(seq, ",ssd");
+	if (!(root->fs_info->sb->s_flags & MS_POSIXACL))
+		seq_puts(seq, ",noacl");
+	return 0;
+}
+
 static void btrfs_write_super(struct super_block *sb)
 {
 	sb->s_dirt = 0;
@@ -630,7 +662,7 @@ static struct super_operations btrfs_super_ops = {
 	.put_super	= btrfs_put_super,
 	.write_super	= btrfs_write_super,
 	.sync_fs	= btrfs_sync_fs,
-	.show_options	= generic_show_options,
+	.show_options	= btrfs_show_options,
 	.write_inode	= btrfs_write_inode,
 	.dirty_inode	= btrfs_dirty_inode,
 	.alloc_inode	= btrfs_alloc_inode,