diff options
| -rw-r--r-- | fs/f2fs/sysfs.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 969e06b65b04..12993ae1713b 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -387,10 +387,12 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 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 cold_count, hot_count; int len = 0, i; + f2fs_down_read(&sbi->sb_lock); + cold_count = le32_to_cpu(sbi->raw_super->extension_count); + hot_count = sbi->raw_super->hot_ext_count; len += sysfs_emit_at(buf, len, "cold file extension:\n"); for (i = 0; i < cold_count; i++) len += sysfs_emit_at(buf, len, "%s\n", extlist[i]); @@ -398,6 +400,7 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a, len += sysfs_emit_at(buf, len, "hot file extension:\n"); for (i = cold_count; i < cold_count + hot_count; i++) len += sysfs_emit_at(buf, len, "%s\n", extlist[i]); + f2fs_up_read(&sbi->sb_lock); return len; } |