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| H A D | resize.c | diff 011fa99404bea3f5d897c4983f6bd51170e3b18f Fri Dec 26 22:58:21 CST 2014 Theodore Ts'o <tytso@mit.edu> ext4: prevent online resize with backup superblock
Prevent BUG or corrupted file systems after the following:
mkfs.ext4 /dev/vdc 100M
mount -t ext4 -o sb=40961 /dev/vdc /vdc
resize2fs /dev/vdc
We previously prevented online resizing using the old resize ioctl.
Move the code to ext4_resize_begin(), so the check applies for all of
the resize ioctl's.
Reported-by: Maxim Malkov <malkov@ispras.ru>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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