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Darrick J. Wong authored
For 1k-block filesystems, the filesystem starts at block 1, not block 0. This fact is recorded in s_first_data_block, so use that to bump up the start_fsb before we start querying the filesystem for its space map. Without this, ext4/026 fails on 1k block ext4 because various functions (notably ext4_get_group_no_and_offset) don't know what to do with an fsblock that is "before" the start of the filesystem and return garbage results (blockgroup 2^32-1, etc.) that confuse fsmap. Signed-off-by:
Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by:
Theodore Ts'o <tytso@mit.edu>
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