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authorAndy Leiserson <andy@leiserson.org>2015-10-18 00:36:29 -0400
committerTheodore Ts'o <tytso@mit.edu>2015-10-18 00:36:29 -0400
commit904dad4742d211b7a8910e92695c0fa957483836 (patch)
tree92bcba5b4383de27a97252217e217bef910f1e92 /fs/jbd2
parent6934da9238da947628be83635e365df41064b09b (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
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