[PATCH v2] f2fs: add overflow/underflow checks to update_sit_entry— please ignore

[yao xiao]

Hi,

After re-examining the update_sit_entry() logic and its callers,
I realized that my assumption in the v2 patch was incorrect.

The value of del is strictly bounded in all valid call paths
(either ±1 or -blocks_per_seg), and valid_blocks is already limited
by f2fs_usable_blks_in_seg().
Therefore the arithmetic cannot overflow before the existing
f2fs_bug_on() range check is executed.

As a result, the overflow/underflow checks introduced in my patch are
unnecessary.
Please ignore this patch.

Sorry for the noise, and thank you for your time.

Best regards,
Yao Xiao