ext4: mark group corrupt on group descriptor checksum

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If the group descriptor fails validation, mark the whole blockgroup
corrupt so that the inode/block allocators skip this group.  The
previous approach takes the risk of writing to a damaged group
descriptor; hopefully it was never the case that the [ib]bitmap fields
pointed to another valid block and got dirtied, since the memset would
fill the page with 1s.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

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Darrick J. Wong 2013-08-28 18:46:56 -04:00 • committed by Theodore Ts'o

parent 87a39389be

commit bdfb6ff4a2

2 changed files with 8 additions and 11 deletions

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9

fs/ext4/balloc.c

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10

fs/ext4/ialloc.c

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