Commit 3b2ce58b authored by Ryusuke Konishi's avatar Ryusuke Konishi
Browse files

nilfs2: move mount options to nilfs object 



This moves mount_opt local variable to nilfs object from nilfs_sb_info
struct.

Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
parent be667377

fs/nilfs2/sb.h

+0 −16
Original line number Diff line number Diff line
@@ -34,8 +34,6 @@ struct nilfs_sc_info; 
 * NILFS super-block data in memory

 */

struct nilfs_sb_info {

	/* Mount options */

	unsigned long s_mount_opt;

	uid_t s_resuid;

	gid_t s_resgid;
@@ -68,18 +66,4 @@ static inline struct nilfs_sc_info *NILFS_SC(struct nilfs_sb_info *sbi) 
	return sbi->s_sc_info;

}



/*

 * Bit operations for the mount option

 */

#define nilfs_clear_opt(sbi, opt)  \

	do { (sbi)->s_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)

#define nilfs_set_opt(sbi, opt)  \

	do { (sbi)->s_mount_opt |= NILFS_MOUNT_##opt; } while (0)

#define nilfs_test_opt(sbi, opt)   ((sbi)->s_mount_opt & NILFS_MOUNT_##opt)

#define nilfs_write_opt(sbi, mask, opt)					\

	do { (sbi)->s_mount_opt =					\

		(((sbi)->s_mount_opt & ~NILFS_MOUNT_##mask) |		\

		 NILFS_MOUNT_##opt);					\

	} while (0)



#endif /* _NILFS_SB */

fs/nilfs2/segment.c

+5 −4
Original line number Diff line number Diff line
@@ -2298,6 +2298,7 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode, 
				  loff_t start, loff_t end)

{

	struct nilfs_sb_info *sbi = NILFS_SB(sb);

	struct the_nilfs *nilfs = sbi->s_nilfs;

	struct nilfs_sc_info *sci = NILFS_SC(sbi);

	struct nilfs_inode_info *ii;

	struct nilfs_transaction_info ti;
@@ -2310,9 +2311,9 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode, 


	ii = NILFS_I(inode);

	if (test_bit(NILFS_I_INODE_DIRTY, &ii->i_state) ||

	    nilfs_test_opt(sbi, STRICT_ORDER) ||

	    nilfs_test_opt(nilfs, STRICT_ORDER) ||

	    test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||

	    nilfs_discontinued(sbi->s_nilfs)) {

	    nilfs_discontinued(nilfs)) {

		nilfs_transaction_unlock(sbi);

		err = nilfs_segctor_sync(sci);

		return err;
@@ -2480,14 +2481,14 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, 
		set_current_state(TASK_INTERRUPTIBLE);

		schedule_timeout(sci->sc_interval);

	}

	if (nilfs_test_opt(sbi, DISCARD)) {

	if (nilfs_test_opt(nilfs, DISCARD)) {

		int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs,

						 sci->sc_nfreesegs);

		if (ret) {

			printk(KERN_WARNING

			       "NILFS warning: error %d on discard request, "

			       "turning discards off for the device\n", ret);

			nilfs_clear_opt(sbi, DISCARD);

			nilfs_clear_opt(nilfs, DISCARD);

		}

	}

fs/nilfs2/super.c

+29 −27
Original line number Diff line number Diff line
@@ -109,7 +109,7 @@ static void nilfs_set_error(struct nilfs_sb_info *sbi) 
void nilfs_error(struct super_block *sb, const char *function,

		 const char *fmt, ...)

{

	struct nilfs_sb_info *sbi = NILFS_SB(sb);

	struct the_nilfs *nilfs = sbi->s_nilfs;

	struct va_format vaf;

	va_list args;
@@ -126,13 +126,13 @@ void nilfs_error(struct super_block *sb, const char *function, 
	if (!(sb->s_flags & MS_RDONLY)) {

		nilfs_set_error(sbi);



		if (nilfs_test_opt(sbi, ERRORS_RO)) {

		if (nilfs_test_opt(nilfs, ERRORS_RO)) {

			printk(KERN_CRIT "Remounting filesystem read-only\n");

			sb->s_flags |= MS_RDONLY;

		}

	}



	if (nilfs_test_opt(sbi, ERRORS_PANIC))

	if (nilfs_test_opt(nilfs, ERRORS_PANIC))

		panic("NILFS (device %s): panic forced after error\n",

		      sb->s_id);

}
@@ -196,7 +196,7 @@ static int nilfs_sync_super(struct nilfs_sb_info *sbi, int flag) 


 retry:

	set_buffer_dirty(nilfs->ns_sbh[0]);

	if (nilfs_test_opt(sbi, BARRIER)) {

	if (nilfs_test_opt(nilfs, BARRIER)) {

		err = __sync_dirty_buffer(nilfs->ns_sbh[0],

					  WRITE_SYNC | WRITE_FLUSH_FUA);

	} else {
@@ -530,22 +530,22 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf) 
static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)

{

	struct super_block *sb = vfs->mnt_sb;

	struct nilfs_sb_info *sbi = NILFS_SB(sb);

	struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;

	struct nilfs_root *root = NILFS_I(vfs->mnt_root->d_inode)->i_root;



	if (!nilfs_test_opt(sbi, BARRIER))

	if (!nilfs_test_opt(nilfs, BARRIER))

		seq_puts(seq, ",nobarrier");

	if (root->cno != NILFS_CPTREE_CURRENT_CNO)

		seq_printf(seq, ",cp=%llu", (unsigned long long)root->cno);

	if (nilfs_test_opt(sbi, ERRORS_PANIC))

	if (nilfs_test_opt(nilfs, ERRORS_PANIC))

		seq_puts(seq, ",errors=panic");

	if (nilfs_test_opt(sbi, ERRORS_CONT))

	if (nilfs_test_opt(nilfs, ERRORS_CONT))

		seq_puts(seq, ",errors=continue");

	if (nilfs_test_opt(sbi, STRICT_ORDER))

	if (nilfs_test_opt(nilfs, STRICT_ORDER))

		seq_puts(seq, ",order=strict");

	if (nilfs_test_opt(sbi, NORECOVERY))

	if (nilfs_test_opt(nilfs, NORECOVERY))

		seq_puts(seq, ",norecovery");

	if (nilfs_test_opt(sbi, DISCARD))

	if (nilfs_test_opt(nilfs, DISCARD))

		seq_puts(seq, ",discard");



	return 0;
@@ -594,7 +594,7 @@ static match_table_t tokens = { 


static int parse_options(char *options, struct super_block *sb, int is_remount)

{

	struct nilfs_sb_info *sbi = NILFS_SB(sb);

	struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;

	char *p;

	substring_t args[MAX_OPT_ARGS];
@@ -609,29 +609,29 @@ static int parse_options(char *options, struct super_block *sb, int is_remount) 
		token = match_token(p, tokens, args);

		switch (token) {

		case Opt_barrier:

			nilfs_set_opt(sbi, BARRIER);

			nilfs_set_opt(nilfs, BARRIER);

			break;

		case Opt_nobarrier:

			nilfs_clear_opt(sbi, BARRIER);

			nilfs_clear_opt(nilfs, BARRIER);

			break;

		case Opt_order:

			if (strcmp(args[0].from, "relaxed") == 0)

				/* Ordered data semantics */

				nilfs_clear_opt(sbi, STRICT_ORDER);

				nilfs_clear_opt(nilfs, STRICT_ORDER);

			else if (strcmp(args[0].from, "strict") == 0)

				/* Strict in-order semantics */

				nilfs_set_opt(sbi, STRICT_ORDER);

				nilfs_set_opt(nilfs, STRICT_ORDER);

			else

				return 0;

			break;

		case Opt_err_panic:

			nilfs_write_opt(sbi, ERROR_MODE, ERRORS_PANIC);

			nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_PANIC);

			break;

		case Opt_err_ro:

			nilfs_write_opt(sbi, ERROR_MODE, ERRORS_RO);

			nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_RO);

			break;

		case Opt_err_cont:

			nilfs_write_opt(sbi, ERROR_MODE, ERRORS_CONT);

			nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_CONT);

			break;

		case Opt_snapshot:

			if (is_remount) {
@@ -642,13 +642,13 @@ static int parse_options(char *options, struct super_block *sb, int is_remount) 
			}

			break;

		case Opt_norecovery:

			nilfs_set_opt(sbi, NORECOVERY);

			nilfs_set_opt(nilfs, NORECOVERY);

			break;

		case Opt_discard:

			nilfs_set_opt(sbi, DISCARD);

			nilfs_set_opt(nilfs, DISCARD);

			break;

		case Opt_nodiscard:

			nilfs_clear_opt(sbi, DISCARD);

			nilfs_clear_opt(nilfs, DISCARD);

			break;

		default:

			printk(KERN_ERR
@@ -660,10 +660,12 @@ static int parse_options(char *options, struct super_block *sb, int is_remount) 
}



static inline void

nilfs_set_default_options(struct nilfs_sb_info *sbi,

nilfs_set_default_options(struct super_block *sb,

			  struct nilfs_super_block *sbp)

{

	sbi->s_mount_opt =

	struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;



	nilfs->ns_mount_opt =

		NILFS_MOUNT_ERRORS_RO | NILFS_MOUNT_BARRIER;

}
@@ -736,7 +738,7 @@ int nilfs_store_magic_and_option(struct super_block *sb, 
	sb->s_flags |= MS_NOATIME;

#endif



	nilfs_set_default_options(sbi, sbp);

	nilfs_set_default_options(sb, sbp);



	sbi->s_resuid = le16_to_cpu(sbp->s_def_resuid);

	sbi->s_resgid = le16_to_cpu(sbp->s_def_resgid);
@@ -1023,7 +1025,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) 
	int err;



	old_sb_flags = sb->s_flags;

	old_mount_opt = sbi->s_mount_opt;

	old_mount_opt = nilfs->ns_mount_opt;



	if (!parse_options(data, sb, 1)) {

		err = -EINVAL;
@@ -1092,7 +1094,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) 


 restore_opts:

	sb->s_flags = old_sb_flags;

	sbi->s_mount_opt = old_mount_opt;

	nilfs->ns_mount_opt = old_mount_opt;

	return err;

}

fs/nilfs2/the_nilfs.c

+2 −2
Original line number Diff line number Diff line
@@ -283,7 +283,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) 
	if (s_flags & MS_RDONLY) {

		__u64 features;



		if (nilfs_test_opt(sbi, NORECOVERY)) {

		if (nilfs_test_opt(nilfs, NORECOVERY)) {

			printk(KERN_INFO "NILFS: norecovery option specified. "

			       "skipping roll-forward recovery\n");

			goto skip_recovery;
@@ -305,7 +305,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) 
			goto failed_unload;

		}

		sbi->s_super->s_flags &= ~MS_RDONLY;

	} else if (nilfs_test_opt(sbi, NORECOVERY)) {

	} else if (nilfs_test_opt(nilfs, NORECOVERY)) {

		printk(KERN_ERR "NILFS: recovery cancelled because norecovery "

		       "option was specified for a read/write mount\n");

		err = -EINVAL;

fs/nilfs2/the_nilfs.h

+18 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ enum { 
 * @ns_cptree: rb-tree of all mounted checkpoints (nilfs_root)

 * @ns_cptree_lock: lock protecting @ns_cptree

 * @ns_gc_inodes: dummy inodes to keep live blocks

 * @ns_mount_opt: mount options

 * @ns_blocksize_bits: bit length of block size

 * @ns_blocksize: block size

 * @ns_nsegments: number of segments in filesystem
@@ -148,6 +149,9 @@ struct the_nilfs { 
	/* GC inode list */

	struct list_head	ns_gc_inodes;



	/* Mount options */

	unsigned long		ns_mount_opt;



	/* Disk layout information (static) */

	unsigned int		ns_blocksize_bits;

	unsigned int		ns_blocksize;
@@ -180,6 +184,20 @@ THE_NILFS_FNS(DISCONTINUED, discontinued) 
THE_NILFS_FNS(GC_RUNNING, gc_running)

THE_NILFS_FNS(SB_DIRTY, sb_dirty)



/*

 * Mount option operations

 */

#define nilfs_clear_opt(nilfs, opt)  \

	do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)

#define nilfs_set_opt(nilfs, opt)  \

	do { (nilfs)->ns_mount_opt |= NILFS_MOUNT_##opt; } while (0)

#define nilfs_test_opt(nilfs, opt) ((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt)

#define nilfs_write_opt(nilfs, mask, opt)				\

	do { (nilfs)->ns_mount_opt =					\

		(((nilfs)->ns_mount_opt & ~NILFS_MOUNT_##mask) |	\

		 NILFS_MOUNT_##opt);					\

	} while (0)



/**

 * struct nilfs_root - nilfs root object

 * @cno: checkpoint number

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