1 files changed, 112 insertions, 61 deletions

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index f2dfc21c6abb..20e56b0fa46a 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -202,6 +202,7 @@ static match_table_t f2fs_tokens = {
 	{Opt_whint, "whint_mode=%s"},
 	{Opt_alloc, "alloc_mode=%s"},
 	{Opt_fsync, "fsync_mode=%s"},
+	{Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
 	{Opt_test_dummy_encryption, "test_dummy_encryption"},
 	{Opt_checkpoint_disable, "checkpoint=disable"},
 	{Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
@@ -284,6 +285,22 @@ static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
 					   F2FS_OPTION(sbi).s_resgid));
 }
 
+static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
+{
+	if (!F2FS_OPTION(sbi).unusable_cap_perc)
+		return;
+
+	if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
+		F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
+	else
+		F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
+					F2FS_OPTION(sbi).unusable_cap_perc;
+
+	f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
+			F2FS_OPTION(sbi).unusable_cap,
+			F2FS_OPTION(sbi).unusable_cap_perc);
+}
+
 static void init_once(void *foo)
 {
 	struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
@@ -394,7 +411,52 @@ static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
 }
 #endif
 
-static int parse_options(struct super_block *sb, char *options)
+static int f2fs_set_test_dummy_encryption(struct super_block *sb,
+					  const char *opt,
+					  const substring_t *arg,
+					  bool is_remount)
+{
+	struct f2fs_sb_info *sbi = F2FS_SB(sb);
+#ifdef CONFIG_FS_ENCRYPTION
+	int err;
+
+	if (!f2fs_sb_has_encrypt(sbi)) {
+		f2fs_err(sbi, "Encrypt feature is off");
+		return -EINVAL;
+	}
+
+	/*
+	 * This mount option is just for testing, and it's not worthwhile to
+	 * implement the extra complexity (e.g. RCU protection) that would be
+	 * needed to allow it to be set or changed during remount.  We do allow
+	 * it to be specified during remount, but only if there is no change.
+	 */
+	if (is_remount && !F2FS_OPTION(sbi).dummy_enc_ctx.ctx) {
+		f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
+		return -EINVAL;
+	}
+	err = fscrypt_set_test_dummy_encryption(
+		sb, arg, &F2FS_OPTION(sbi).dummy_enc_ctx);
+	if (err) {
+		if (err == -EEXIST)
+			f2fs_warn(sbi,
+				  "Can't change test_dummy_encryption on remount");
+		else if (err == -EINVAL)
+			f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
+				  opt);
+		else
+			f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
+				  opt, err);
+		return -EINVAL;
+	}
+	f2fs_warn(sbi, "Test dummy encryption mode enabled");
+#else
+	f2fs_warn(sbi, "Test dummy encryption mount option ignored");
+#endif
+	return 0;
+}
+
+static int parse_options(struct super_block *sb, char *options, bool is_remount)
 {
 	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	substring_t args[MAX_OPT_ARGS];
@@ -403,9 +465,7 @@ static int parse_options(struct super_block *sb, char *options)
 	int arg = 0, ext_cnt;
 	kuid_t uid;
 	kgid_t gid;
-#ifdef CONFIG_QUOTA
 	int ret;
-#endif
 
 	if (!options)
 		return 0;
@@ -427,11 +487,11 @@ static int parse_options(struct super_block *sb, char *options)
 
 			if (!name)
 				return -ENOMEM;
-			if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
+			if (!strcmp(name, "on")) {
 				F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
-			} else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
+			} else if (!strcmp(name, "off")) {
 				F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
-			} else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
+			} else if (!strcmp(name, "sync")) {
 				F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
 			} else {
 				kvfree(name);
@@ -591,16 +651,14 @@ static int parse_options(struct super_block *sb, char *options)
 
 			if (!name)
 				return -ENOMEM;
-			if (strlen(name) == 8 &&
-					!strncmp(name, "adaptive", 8)) {
+			if (!strcmp(name, "adaptive")) {
 				if (f2fs_sb_has_blkzoned(sbi)) {
 					f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
 					kvfree(name);
 					return -EINVAL;
 				}
 				F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
-			} else if (strlen(name) == 3 &&
-					!strncmp(name, "lfs", 3)) {
+			} else if (!strcmp(name, "lfs")) {
 				F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
 			} else {
 				kvfree(name);
@@ -725,14 +783,11 @@ static int parse_options(struct super_block *sb, char *options)
 			name = match_strdup(&args[0]);
 			if (!name)
 				return -ENOMEM;
-			if (strlen(name) == 10 &&
-					!strncmp(name, "user-based", 10)) {
+			if (!strcmp(name, "user-based")) {
 				F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
-			} else if (strlen(name) == 3 &&
-					!strncmp(name, "off", 3)) {
+			} else if (!strcmp(name, "off")) {
 				F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
-			} else if (strlen(name) == 8 &&
-					!strncmp(name, "fs-based", 8)) {
+			} else if (!strcmp(name, "fs-based")) {
 				F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
 			} else {
 				kvfree(name);
@@ -745,11 +800,9 @@ static int parse_options(struct super_block *sb, char *options)
 			if (!name)
 				return -ENOMEM;
 
-			if (strlen(name) == 7 &&
-					!strncmp(name, "default", 7)) {
+			if (!strcmp(name, "default")) {
 				F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
-			} else if (strlen(name) == 5 &&
-					!strncmp(name, "reuse", 5)) {
+			} else if (!strcmp(name, "reuse")) {
 				F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
 			} else {
 				kvfree(name);
@@ -761,14 +814,11 @@ static int parse_options(struct super_block *sb, char *options)
 			name = match_strdup(&args[0]);
 			if (!name)
 				return -ENOMEM;
-			if (strlen(name) == 5 &&
-					!strncmp(name, "posix", 5)) {
+			if (!strcmp(name, "posix")) {
 				F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
-			} else if (strlen(name) == 6 &&
-					!strncmp(name, "strict", 6)) {
+			} else if (!strcmp(name, "strict")) {
 				F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
-			} else if (strlen(name) == 9 &&
-					!strncmp(name, "nobarrier", 9)) {
+			} else if (!strcmp(name, "nobarrier")) {
 				F2FS_OPTION(sbi).fsync_mode =
 							FSYNC_MODE_NOBARRIER;
 			} else {
@@ -778,29 +828,17 @@ static int parse_options(struct super_block *sb, char *options)
 			kvfree(name);
 			break;
 		case Opt_test_dummy_encryption:
-#ifdef CONFIG_FS_ENCRYPTION
-			if (!f2fs_sb_has_encrypt(sbi)) {
-				f2fs_err(sbi, "Encrypt feature is off");
-				return -EINVAL;
-			}
-
-			F2FS_OPTION(sbi).test_dummy_encryption = true;
-			f2fs_info(sbi, "Test dummy encryption mode enabled");
-#else
-			f2fs_info(sbi, "Test dummy encryption mount option ignored");
-#endif
+			ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
+							     is_remount);
+			if (ret)
+				return ret;
 			break;
 		case Opt_checkpoint_disable_cap_perc:
 			if (args->from && match_int(args, &arg))
 				return -EINVAL;
 			if (arg < 0 || arg > 100)
 				return -EINVAL;
-			if (arg == 100)
-				F2FS_OPTION(sbi).unusable_cap =
-					sbi->user_block_count;
-			else
-				F2FS_OPTION(sbi).unusable_cap =
-					(sbi->user_block_count / 100) *	arg;
+			F2FS_OPTION(sbi).unusable_cap_perc = arg;
 			set_opt(sbi, DISABLE_CHECKPOINT);
 			break;
 		case Opt_checkpoint_disable_cap:
@@ -823,17 +861,18 @@ static int parse_options(struct super_block *sb, char *options)
 			name = match_strdup(&args[0]);
 			if (!name)
 				return -ENOMEM;
-			if (strlen(name) == 3 && !strcmp(name, "lzo")) {
+			if (!strcmp(name, "lzo")) {
 				F2FS_OPTION(sbi).compress_algorithm =
 								COMPRESS_LZO;
-			} else if (strlen(name) == 3 &&
-					!strcmp(name, "lz4")) {
+			} else if (!strcmp(name, "lz4")) {
 				F2FS_OPTION(sbi).compress_algorithm =
 								COMPRESS_LZ4;
-			} else if (strlen(name) == 4 &&
-					!strcmp(name, "zstd")) {
+			} else if (!strcmp(name, "zstd")) {
 				F2FS_OPTION(sbi).compress_algorithm =
 								COMPRESS_ZSTD;
+			} else if (!strcmp(name, "lzo-rle")) {
+				F2FS_OPTION(sbi).compress_algorithm =
+								COMPRESS_LZORLE;
 			} else {
 				kfree(name);
 				return -EINVAL;
@@ -1213,6 +1252,7 @@ static void f2fs_put_super(struct super_block *sb)
 	for (i = 0; i < MAXQUOTAS; i++)
 		kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
 #endif
+	fscrypt_free_dummy_context(&F2FS_OPTION(sbi).dummy_enc_ctx);
 	destroy_percpu_info(sbi);
 	for (i = 0; i < NR_PAGE_TYPE; i++)
 		kvfree(sbi->write_io[i]);
@@ -1292,7 +1332,8 @@ static int f2fs_statfs_project(struct super_block *sb,
 		limit >>= sb->s_blocksize_bits;
 
 	if (limit && buf->f_blocks > limit) {
-		curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
+		curblock = (dquot->dq_dqb.dqb_curspace +
+			    dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
 		buf->f_blocks = limit;
 		buf->f_bfree = buf->f_bavail =
 			(buf->f_blocks > curblock) ?
@@ -1427,6 +1468,9 @@ static inline void f2fs_show_compress_options(struct seq_file *seq,
 	case COMPRESS_ZSTD:
 		algtype = "zstd";
 		break;
+	case COMPRESS_LZORLE:
+		algtype = "lzo-rle";
+		break;
 	}
 	seq_printf(seq, ",compress_algorithm=%s", algtype);
 
@@ -1543,10 +1587,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 		seq_printf(seq, ",whint_mode=%s", "user-based");
 	else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
 		seq_printf(seq, ",whint_mode=%s", "fs-based");
-#ifdef CONFIG_FS_ENCRYPTION
-	if (F2FS_OPTION(sbi).test_dummy_encryption)
-		seq_puts(seq, ",test_dummy_encryption");
-#endif
+
+	fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
 
 	if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
 		seq_printf(seq, ",alloc_mode=%s", "default");
@@ -1575,7 +1617,6 @@ static void default_options(struct f2fs_sb_info *sbi)
 	F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
 	F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
 	F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
-	F2FS_OPTION(sbi).test_dummy_encryption = false;
 	F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
 	F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
 	F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
@@ -1734,7 +1775,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	default_options(sbi);
 
 	/* parse mount options */
-	err = parse_options(sb, data);
+	err = parse_options(sb, data, true);
 	if (err)
 		goto restore_opts;
 	checkpoint_changed =
@@ -1845,6 +1886,7 @@ skip:
 		(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
 
 	limit_reserve_root(sbi);
+	adjust_unusable_cap_perc(sbi);
 	*flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
 	return 0;
 restore_gc:
@@ -2410,9 +2452,10 @@ static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
 				ctx, len, fs_data, XATTR_CREATE);
 }
 
-static bool f2fs_dummy_context(struct inode *inode)
+static const union fscrypt_context *
+f2fs_get_dummy_context(struct super_block *sb)
 {
-	return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
+	return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_ctx.ctx;
 }
 
 static bool f2fs_has_stable_inodes(struct super_block *sb)
@@ -2431,7 +2474,7 @@ static const struct fscrypt_operations f2fs_cryptops = {
 	.key_prefix		= "f2fs:",
 	.get_context		= f2fs_get_context,
 	.set_context		= f2fs_set_context,
-	.dummy_context		= f2fs_dummy_context,
+	.get_dummy_context	= f2fs_get_dummy_context,
 	.empty_dir		= f2fs_empty_dir,
 	.max_namelen		= F2FS_NAME_LEN,
 	.has_stable_inodes	= f2fs_has_stable_inodes,
@@ -3026,7 +3069,7 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
 	if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
 		FDEV(devi).nr_blkz++;
 
-	FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
+	FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
 					BITS_TO_LONGS(FDEV(devi).nr_blkz)
 					* sizeof(unsigned long),
 					GFP_KERNEL);
@@ -3366,7 +3409,7 @@ try_onemore:
 		goto free_sb_buf;
 	}
 
-	err = parse_options(sb, options);
+	err = parse_options(sb, options, false);
 	if (err)
 		goto free_options;
 
@@ -3413,7 +3456,6 @@ try_onemore:
 	init_rwsem(&sbi->gc_lock);
 	mutex_init(&sbi->writepages);
 	mutex_init(&sbi->cp_mutex);
-	mutex_init(&sbi->resize_mutex);
 	init_rwsem(&sbi->node_write);
 	init_rwsem(&sbi->node_change);
 
@@ -3424,6 +3466,7 @@ try_onemore:
 	/* init iostat info */
 	spin_lock_init(&sbi->iostat_lock);
 	sbi->iostat_enable = false;
+	sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
 
 	for (i = 0; i < NR_PAGE_TYPE; i++) {
 		int n = (i == META) ? 1: NR_TEMP_TYPE;
@@ -3521,6 +3564,7 @@ try_onemore:
 	sbi->reserved_blocks = 0;
 	sbi->current_reserved_blocks = 0;
 	limit_reserve_root(sbi);
+	adjust_unusable_cap_perc(sbi);
 
 	for (i = 0; i < NR_INODE_TYPE; i++) {
 		INIT_LIST_HEAD(&sbi->inode_list[i]);
@@ -3769,6 +3813,7 @@ free_options:
 	for (i = 0; i < MAXQUOTAS; i++)
 		kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
 #endif
+	fscrypt_free_dummy_context(&F2FS_OPTION(sbi).dummy_enc_ctx);
 	kvfree(options);
 free_sb_buf:
 	kvfree(raw_super);
@@ -3890,7 +3935,12 @@ static int __init init_f2fs_fs(void)
 	err = f2fs_init_bioset();
 	if (err)
 		goto free_bio_enrty_cache;
+	err = f2fs_init_compress_mempool();
+	if (err)
+		goto free_bioset;
 	return 0;
+free_bioset:
+	f2fs_destroy_bioset();
 free_bio_enrty_cache:
 	f2fs_destroy_bio_entry_cache();
 free_post_read:
@@ -3918,6 +3968,7 @@ fail:
 
 static void __exit exit_f2fs_fs(void)
 {
+	f2fs_destroy_compress_mempool();
 	f2fs_destroy_bioset();
 	f2fs_destroy_bio_entry_cache();
 	f2fs_destroy_post_read_processing();