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| author |   Theodore Ts'o <tytso@mit.edu> | 2014-12-26 23:58:21 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-12-26 23:58:21 -0500 |
| commit | 011fa99404bea3f5d897c4983f6bd51170e3b18f (patch) | |
| tree | 09233f55cd3aa55cf779f684cd1968cc36a08437 /fs/ext4/file.c | |
| parent | ext4: ext4_da_convert_inline_data_to_extent drop locked page after error (diff) | |
| download | linux-dev-011fa99404bea3f5d897c4983f6bd51170e3b18f.tar.xz linux-dev-011fa99404bea3f5d897c4983f6bd51170e3b18f.zip | |
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>
Diffstat (limited to 'fs/ext4/file.c')
0 files changed, 0 insertions, 0 deletions