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resize2fs: fix inode table move for the backwards move case

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In the case where the new location of the inode table is before the
old inode table, the optimization which tries to optimize zero block
moves breaks.  Fix it.

This fixes a bug that was tickled by the reproduction described in the
previous commit.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2014-04-28 10:07:16 -04:00
parent d51072af0a
commit cd84e9a337
1 changed files with 2 additions and 0 deletions
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2
resize/resize2fs.c
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@ -1869,6 +1869,8 @@ static errcode_t move_itables(ext2_resize_t rfs)
if (!diff)
continue;
if (diff < 0)
diff = 0;
retval = io_channel_read_blk64(fs->io, old_blk,
fs->inode_blocks_per_group,