Hi,
I am trying to understand journaling code in ext3.
Can some one enlighten me, why we need journal start
and stop in ext3_writeback_writepage() ? The block
allocation is already made in prepare_write().
Whats the purpose of journal start/stop around
block_write_full_page() ? Its not flushing metadata anyway ?
Whats getting written to journal ?
Thanks,
Badari
static int ext3_writeback_writepage(struct page *page,
struct writeback_control *wbc)
{
...
handle = ext3_journal_start(inode,
ext3_writepage_trans_blocks(inode));
...
ret = block_write_full_page(page, ext3_get_block, wbc);
err = ext3_journal_stop(handle);
...
}
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