ext4: revert buggy trim overflow patch
This reverts commit 4f531501e44: ext4: fix possible overflow in
ext4_trim_fs()
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index cd5214f..cc1297e 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4804,7 +4804,6 @@
int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
{
struct ext4_buddy e4b;
- ext4_fsblk_t blocks_count = ext4_blocks_count(EXT4_SB(sb)->s_es);
ext4_group_t first_group, last_group;
ext4_group_t group, ngroups = ext4_get_groups_count(sb);
ext4_grpblk_t cnt = 0, first_block, last_block;
@@ -4816,11 +4815,6 @@
minlen = range->minlen >> sb->s_blocksize_bits;
trimmed = 0;
- if (start >= blocks_count)
- return -EINVAL;
- if (start + len > blocks_count)
- len = blocks_count - start;
-
if (unlikely(minlen > EXT4_BLOCKS_PER_GROUP(sb)))
return -EINVAL;