On Thu 03-03-11 22:58:37, Tao Ma wrote: > From: Tao Ma <boyu.mt@xxxxxxxxxx> > > In a bs=4096 volume, if we call FITRIM with the following parameter as > fstrim_range(start = 102400, len = 134144000, minlen = 10240), with the > following code: > if (len >= EXT3_BLOCKS_PER_GROUP(sb)) > len -= (EXT3_BLOCKS_PER_GROUP(sb) - first_block); > else > last_block = first_block + len; > > So if len < EXT3_BLOCKS_PER_GROUP while first_block + len > > EXT3_BLOCKS_PER_GROUP, last_block will be set to an overflow value > which exceeds EXT3_BLOCKS_PER_GROUP. > > This patch fixes it and adjusts len and last_block accordingly. Thanks. Merged. Honza -- Jan Kara <jack@xxxxxxx> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
