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-rw-r--r--fs/btrfs/ctree.h1
-rw-r--r--fs/btrfs/super.c17
2 files changed, 18 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 7995666af959..75947c6c04c3 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1335,6 +1335,7 @@ static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
#define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25)
#define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26)
#define BTRFS_MOUNT_NOLOGREPLAY (1 << 27)
+#define BTRFS_MOUNT_REF_VERIFY (1 << 28)
#define BTRFS_DEFAULT_COMMIT_INTERVAL (30)
#define BTRFS_DEFAULT_MAX_INLINE (2048)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 770ac088dd9c..880ab4949f69 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -326,6 +326,9 @@ enum {
#ifdef CONFIG_BTRFS_DEBUG
Opt_fragment_data, Opt_fragment_metadata, Opt_fragment_all,
#endif
+#ifdef CONFIG_BTRFS_FS_REF_VERIFY
+ Opt_ref_verify,
+#endif
Opt_err,
};
@@ -387,6 +390,9 @@ static const match_table_t tokens = {
{Opt_fragment_metadata, "fragment=metadata"},
{Opt_fragment_all, "fragment=all"},
#endif
+#ifdef CONFIG_BTRFS_FS_REF_VERIFY
+ {Opt_ref_verify, "ref_verify"},
+#endif
{Opt_err, NULL},
};
@@ -825,6 +831,12 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
btrfs_set_opt(info->mount_opt, FRAGMENT_DATA);
break;
#endif
+#ifdef CONFIG_BTRFS_FS_REF_VERIFY
+ case Opt_ref_verify:
+ btrfs_info(info, "doing ref verification");
+ btrfs_set_opt(info->mount_opt, REF_VERIFY);
+ break;
+#endif
case Opt_err:
btrfs_info(info, "unrecognized mount option '%s'", p);
ret = -EINVAL;
@@ -1305,6 +1317,8 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
if (btrfs_test_opt(info, FRAGMENT_METADATA))
seq_puts(seq, ",fragment=metadata");
#endif
+ if (btrfs_test_opt(info, REF_VERIFY))
+ seq_puts(seq, ",ref_verify");
seq_printf(seq, ",subvolid=%llu",
BTRFS_I(d_inode(dentry))->root->root_key.objectid);
seq_puts(seq, ",subvol=");
@@ -2319,6 +2333,9 @@ static void btrfs_print_mod_info(void)
#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
", integrity-checker=on"
#endif
+#ifdef CONFIG_BTRFS_FS_REF_VERIFY
+ ", ref-verify=on"
+#endif
"\n",
btrfs_crc32c_impl());
}