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Commit fb592373 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: add ref-verify mount option 



This adds the infrastructure for turning ref verify on and off for a
mount, to be used by a later patch.

Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
[ enhnance btrfs_print_mod_info to print if ref-verify is compiled in ]
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 6273b7f8

fs/btrfs/ctree.h

+1 −0
Original line number Diff line number Diff line
@@ -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)

fs/btrfs/super.c

+17 −0
Original line number Diff line number Diff line
@@ -325,6 +325,9 @@ enum { 
	Opt_nologreplay, Opt_norecovery,

#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,

};
@@ -386,6 +389,9 @@ static const match_table_t tokens = { 
	{Opt_fragment_data, "fragment=data"},

	{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},

};
@@ -824,6 +830,12 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, 
			btrfs_info(info, "fragmenting data");

			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);
@@ -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=");
@@ -2318,6 +2332,9 @@ static void btrfs_print_mod_info(void) 
#endif

#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY

			", integrity-checker=on"

#endif

#ifdef CONFIG_BTRFS_FS_REF_VERIFY

			", ref-verify=on"

#endif

			"\n",

			btrfs_crc32c_impl());