diff options
| -rw-r--r-- | fs/ext4/mballoc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index cc1297e15f1b..851f49b2f9d2 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4808,6 +4808,8 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) ext4_group_t group, ngroups = ext4_get_groups_count(sb); ext4_grpblk_t cnt = 0, first_block, last_block; uint64_t start, len, minlen, trimmed; + ext4_fsblk_t first_data_blk = + le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block); int ret = 0; start = range->start >> sb->s_blocksize_bits; @@ -4817,6 +4819,10 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) if (unlikely(minlen > EXT4_BLOCKS_PER_GROUP(sb))) return -EINVAL; + if (start < first_data_blk) { + len -= first_data_blk - start; + start = first_data_blk; + } /* Determine first and last group to examine based on start and len */ ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) start, |