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2006 Apr 18
0
Use of journal->j_blk_offset
Hi everyone,
So this question is more for people who are familiar with the internals of
ext3.
I notice that the function journal_init_dev() sets the value
journal->j_blk_offset = start
This means that start can be any arbitrary block number on the device.
However, later in the function journal_bmap() it is never actually used.
The value of *retp in journal_bmap() is set to
*retp = blocknr; /* + journal->j_blk_offset */
A comment on the top of journal_bmap() says t...