jbd2_journal_init_dev9
Creates and initialises a journal structure
Arguments
bdev
Block device on which to create the journal
fs_dev
Device which hold journalled filesystem for this journal.
start
Block nr Start of journal.
len
Length of the journal in blocks.
blocksize
blocksize of journalling device
Return
a newly created journal_t *
jbd2_journal_init_dev creates a journal which maps a fixed contiguous range of blocks on an arbitrary block device.