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author | Andy Leiserson <andy@leiserson.org> | 2015-10-18 00:36:29 -0400 |
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committer | Theodore Ts'o <tytso@mit.edu> | 2015-10-18 00:36:29 -0400 |
commit | 904dad4742d211b7a8910e92695c0fa957483836 (patch) | |
tree | 92bcba5b4383de27a97252217e217bef910f1e92 /fs/jbd2 | |
parent | 6934da9238da947628be83635e365df41064b09b (diff) |
[PATCH] fix calculation of meta_bg descriptor backups
"group" is the group where the backup will be placed, and is
initialized to zero in the declaration. This meant that backups for
meta_bg descriptors were erroneously written to the backup block group
descriptors in groups 1 and (desc_per_block-1).
Reproduction information:
mke2fs -Fq -t ext4 -b 1024 -O ^resize_inode /tmp/foo.img 16G
truncate -s 24G /tmp/foo.img
losetup /dev/loop0 /tmp/foo.img
mount /dev/loop0 /mnt
resize2fs /dev/loop0
umount /dev/loop0
dd if=/dev/zero of=/dev/loop0 bs=1024 count=2
e2fsck -fy /dev/loop0
losetup -d /dev/loop0
Signed-off-by: Andy Leiserson <andy@leiserson.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/jbd2')
0 files changed, 0 insertions, 0 deletions