Commit 15ddcdd3 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: add fs_parameter definitions 



In order to convert to the new mount API we have to change how we do the
mount option parsing.  For now we're going to duplicate these helpers to
make it easier to follow, and then remove the old code once everything
is in place.  This patch contains the re-definition of all of our mount
options into the new fs_parameter_spec format.

Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: default avatarAnand Jain <anand.jain@oracle.com>
Acked-by: default avatarChristian Brauner <brauner@kernel.org>
Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 2496bff6

fs/btrfs/super.c

+125 −1
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
#include <linux/crc32c.h>

#include <linux/btrfs.h>

#include <linux/security.h>

#include <linux/fs_parser.h>

#include "messages.h"

#include "delayed-inode.h"

#include "ctree.h"
@@ -135,7 +136,7 @@ enum { 
	/* Debugging options */

	Opt_enospc_debug, Opt_noenospc_debug,

#ifdef CONFIG_BTRFS_DEBUG

	Opt_fragment_data, Opt_fragment_metadata, Opt_fragment_all,

	Opt_fragment, Opt_fragment_data, Opt_fragment_metadata, Opt_fragment_all,

#endif

#ifdef CONFIG_BTRFS_FS_REF_VERIFY

	Opt_ref_verify,
@@ -225,6 +226,129 @@ static const match_table_t rescue_tokens = { 
	{Opt_err, NULL},

};



enum {

	Opt_fatal_errors_panic,

	Opt_fatal_errors_bug,

};



static const struct constant_table btrfs_parameter_fatal_errors[] = {

	{ "panic", Opt_fatal_errors_panic },

	{ "bug", Opt_fatal_errors_bug },

	{}

};



enum {

	Opt_discard_sync,

	Opt_discard_async,

};



static const struct constant_table btrfs_parameter_discard[] = {

	{ "sync", Opt_discard_sync },

	{ "async", Opt_discard_async },

	{}

};



enum {

	Opt_space_cache_v1,

	Opt_space_cache_v2,

};



static const struct constant_table btrfs_parameter_space_cache[] = {

	{ "v1", Opt_space_cache_v1 },

	{ "v2", Opt_space_cache_v2 },

	{}

};



enum {

	Opt_rescue_usebackuproot,

	Opt_rescue_nologreplay,

	Opt_rescue_ignorebadroots,

	Opt_rescue_ignoredatacsums,

	Opt_rescue_parameter_all,

};



static const struct constant_table btrfs_parameter_rescue[] = {

	{ "usebackuproot", Opt_rescue_usebackuproot },

	{ "nologreplay", Opt_rescue_nologreplay },

	{ "ignorebadroots", Opt_rescue_ignorebadroots },

	{ "ibadroots", Opt_rescue_ignorebadroots },

	{ "ignoredatacsums", Opt_rescue_ignoredatacsums },

	{ "idatacsums", Opt_rescue_ignoredatacsums },

	{ "all", Opt_rescue_parameter_all },

	{}

};



#ifdef CONFIG_BTRFS_DEBUG

enum {

	Opt_fragment_parameter_data,

	Opt_fragment_parameter_metadata,

	Opt_fragment_parameter_all,

};



static const struct constant_table btrfs_parameter_fragment[] = {

	{ "data", Opt_fragment_parameter_data },

	{ "metadata", Opt_fragment_parameter_metadata },

	{ "all", Opt_fragment_parameter_all },

	{}

};

#endif



static const struct fs_parameter_spec btrfs_fs_parameters[] __maybe_unused = {

	fsparam_flag_no("acl", Opt_acl),

	fsparam_flag_no("autodefrag", Opt_defrag),

	fsparam_flag_no("barrier", Opt_barrier),

	fsparam_flag("clear_cache", Opt_clear_cache),

	fsparam_u32("commit", Opt_commit_interval),

	fsparam_flag("compress", Opt_compress),

	fsparam_string("compress", Opt_compress_type),

	fsparam_flag("compress-force", Opt_compress_force),

	fsparam_string("compress-force", Opt_compress_force_type),

	fsparam_flag_no("datacow", Opt_datacow),

	fsparam_flag_no("datasum", Opt_datasum),

	fsparam_flag("degraded", Opt_degraded),

	fsparam_string("device", Opt_device),

	fsparam_flag_no("discard", Opt_discard),

	fsparam_enum("discard", Opt_discard_mode, btrfs_parameter_discard),

	fsparam_enum("fatal_errors", Opt_fatal_errors, btrfs_parameter_fatal_errors),

	fsparam_flag_no("flushoncommit", Opt_flushoncommit),

	fsparam_flag_no("inode_cache", Opt_inode_cache),

	fsparam_string("max_inline", Opt_max_inline),

	fsparam_u32("metadata_ratio", Opt_ratio),

	fsparam_flag("rescan_uuid_tree", Opt_rescan_uuid_tree),

	fsparam_flag("skip_balance", Opt_skip_balance),

	fsparam_flag_no("space_cache", Opt_space_cache),

	fsparam_enum("space_cache", Opt_space_cache_version, btrfs_parameter_space_cache),

	fsparam_flag_no("ssd", Opt_ssd),

	fsparam_flag_no("ssd_spread", Opt_ssd_spread),

	fsparam_string("subvol", Opt_subvol),

	fsparam_flag("subvol=", Opt_subvol_empty),

	fsparam_u64("subvolid", Opt_subvolid),

	fsparam_u32("thread_pool", Opt_thread_pool),

	fsparam_flag_no("treelog", Opt_treelog),

	fsparam_flag("user_subvol_rm_allowed", Opt_user_subvol_rm_allowed),



	/* Rescue options. */

	fsparam_enum("rescue", Opt_rescue, btrfs_parameter_rescue),

	/* Deprecated, with alias rescue=nologreplay */

	__fsparam(NULL, "nologreplay", Opt_nologreplay, fs_param_deprecated, NULL),

	/* Deprecated, with alias rescue=usebackuproot */

	__fsparam(NULL, "usebackuproot", Opt_usebackuproot, fs_param_deprecated, NULL),



	/* Deprecated options. */

	__fsparam(NULL, "recovery", Opt_recovery,

		  fs_param_neg_with_no | fs_param_deprecated, NULL),



	/* Debugging options. */

	fsparam_flag_no("enospc_debug", Opt_enospc_debug),

#ifdef CONFIG_BTRFS_DEBUG

	fsparam_enum("fragment", Opt_fragment, btrfs_parameter_fragment),

#endif

#ifdef CONFIG_BTRFS_FS_REF_VERIFY

	fsparam_flag("ref_verify", Opt_ref_verify),

#endif

	{}

};



static bool check_ro_option(struct btrfs_fs_info *fs_info, unsigned long opt,

			    const char *opt_name)

{