tree 8454d18e301e4a408236b22d91bf506fa90630fb
parent 445a1d3e24b806bff01e422f0ddadf68e0eb5d0f
author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 1202290808 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202323280 -0800

ext2: add block bitmap validation

When a new block bitmap is read from disk in read_block_bitmap() there are a
few bits that should ALWAYS be set.  In particular, the blocks given
corresponding to block bitmap, inode bitmap and inode tables.  Validate the
block bitmap against these blocks.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>