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Date: Sat, 23 May 2015 23:02:21 -0400 From: Phillip Susi <psusi@...ntu.com> To: linux-ext4@...r.kernel.org Cc: tytso@....edu Subject: [PATCH] resize2fs: fix minimum size calculation The size calculation adds an initial number of block groups needed to hold the inodes on the fs, then augments them with additional groups needed to reach the minimum number of data blocks, and then calculates the size of the last block group ( which should be a fraction of one block group ). It was calculating a last bg size of several block groups because when adding the supplementary bgs, it only advanced the position of the start of the last group by one group, even though it was adding multiple groups. Add the missing multiplier to move the last bg start position up to the correct location, thus computing a proper fractional last bg size. --- resize/resize2fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/resize/resize2fs.c b/resize/resize2fs.c index 041ff75..3359a8f 100644 --- a/resize/resize2fs.c +++ b/resize/resize2fs.c @@ -2870,7 +2870,7 @@ blk64_t calculate_minimum_resize_size(ext2_filsys fs, int flags) /* ok we have to account for the last group */ overhead = calc_group_overhead(fs, groups-1, old_desc_blocks); - last_start += EXT2_BLOCKS_PER_GROUP(fs->super) - overhead; + last_start += (EXT2_BLOCKS_PER_GROUP(fs->super) * extra_grps) - overhead; grp = flex_groups; groups += extra_grps; -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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