1 files changed, 69 insertions, 4 deletions

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index d978c7b6ea04..f33a56d6e6dd 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -58,7 +58,7 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 	else if (struct_type == FAULT_INFO_RATE ||
 					struct_type == FAULT_INFO_TYPE)
-		return (unsigned char *)&sbi->fault_info;
+		return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
 #endif
 	return NULL;
 }
@@ -92,10 +92,10 @@ static ssize_t features_show(struct f2fs_attr *a,
 	if (!sb->s_bdev->bd_part)
 		return snprintf(buf, PAGE_SIZE, "0\n");
 
-	if (f2fs_sb_has_crypto(sb))
+	if (f2fs_sb_has_encrypt(sb))
 		len += snprintf(buf, PAGE_SIZE - len, "%s",
 						"encryption");
-	if (f2fs_sb_mounted_blkzoned(sb))
+	if (f2fs_sb_has_blkzoned(sb))
 		len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 				len ? ", " : "", "blkzoned");
 	if (f2fs_sb_has_extra_attr(sb))
@@ -116,6 +116,9 @@ static ssize_t features_show(struct f2fs_attr *a,
 	if (f2fs_sb_has_inode_crtime(sb))
 		len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 				len ? ", " : "", "inode_crtime");
+	if (f2fs_sb_has_lost_found(sb))
+		len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
+				len ? ", " : "", "lost_found");
 	len += snprintf(buf + len, PAGE_SIZE - len, "\n");
 	return len;
 }
@@ -136,6 +139,27 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
 	if (!ptr)
 		return -EINVAL;
 
+	if (!strcmp(a->attr.name, "extension_list")) {
+		__u8 (*extlist)[F2FS_EXTENSION_LEN] =
+					sbi->raw_super->extension_list;
+		int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+		int hot_count = sbi->raw_super->hot_ext_count;
+		int len = 0, i;
+
+		len += snprintf(buf + len, PAGE_SIZE - len,
+						"cold file extenstion:\n");
+		for (i = 0; i < cold_count; i++)
+			len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
+								extlist[i]);
+
+		len += snprintf(buf + len, PAGE_SIZE - len,
+						"hot file extenstion:\n");
+		for (i = cold_count; i < cold_count + hot_count; i++)
+			len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
+								extlist[i]);
+		return len;
+	}
+
 	ui = (unsigned int *)(ptr + a->offset);
 
 	return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
@@ -154,6 +178,41 @@ static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
 	if (!ptr)
 		return -EINVAL;
 
+	if (!strcmp(a->attr.name, "extension_list")) {
+		const char *name = strim((char *)buf);
+		bool set = true, hot;
+
+		if (!strncmp(name, "[h]", 3))
+			hot = true;
+		else if (!strncmp(name, "[c]", 3))
+			hot = false;
+		else
+			return -EINVAL;
+
+		name += 3;
+
+		if (*name == '!') {
+			name++;
+			set = false;
+		}
+
+		if (strlen(name) >= F2FS_EXTENSION_LEN)
+			return -EINVAL;
+
+		down_write(&sbi->sb_lock);
+
+		ret = update_extension_list(sbi, name, hot, set);
+		if (ret)
+			goto out;
+
+		ret = f2fs_commit_super(sbi, false);
+		if (ret)
+			update_extension_list(sbi, name, hot, !set);
+out:
+		up_write(&sbi->sb_lock);
+		return ret ? ret : count;
+	}
+
 	ui = (unsigned int *)(ptr + a->offset);
 
 	ret = kstrtoul(skip_spaces(buf), 0, &t);
@@ -166,7 +225,7 @@ static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
 	if (a->struct_type == RESERVED_BLOCKS) {
 		spin_lock(&sbi->stat_lock);
 		if (t > (unsigned long)(sbi->user_block_count -
-					sbi->root_reserved_blocks)) {
+				F2FS_OPTION(sbi).root_reserved_blocks)) {
 			spin_unlock(&sbi->stat_lock);
 			return -EINVAL;
 		}
@@ -236,6 +295,7 @@ enum feat_id {
 	FEAT_FLEXIBLE_INLINE_XATTR,
 	FEAT_QUOTA_INO,
 	FEAT_INODE_CRTIME,
+	FEAT_LOST_FOUND,
 };
 
 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@@ -251,6 +311,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
 	case FEAT_FLEXIBLE_INLINE_XATTR:
 	case FEAT_QUOTA_INO:
 	case FEAT_INODE_CRTIME:
+	case FEAT_LOST_FOUND:
 		return snprintf(buf, PAGE_SIZE, "supported\n");
 	}
 	return 0;
@@ -307,6 +368,7 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
+F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
@@ -329,6 +391,7 @@ F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
+F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
 
 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
 static struct attribute *f2fs_attrs[] = {
@@ -357,6 +420,7 @@ static struct attribute *f2fs_attrs[] = {
 	ATTR_LIST(iostat_enable),
 	ATTR_LIST(readdir_ra),
 	ATTR_LIST(gc_pin_file_thresh),
+	ATTR_LIST(extension_list),
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 	ATTR_LIST(inject_rate),
 	ATTR_LIST(inject_type),
@@ -383,6 +447,7 @@ static struct attribute *f2fs_feat_attrs[] = {
 	ATTR_LIST(flexible_inline_xattr),
 	ATTR_LIST(quota_ino),
 	ATTR_LIST(inode_crtime),
+	ATTR_LIST(lost_found),
 	NULL,
 };