Commit e6950a4d authored Apr 30, 2009 by Frederic Weisbecker

kill-the-BKL/reiserfs: release the write lock before rescheduling on do_journal_end()



When do_journal_end() copies data to the journal blocks buffers in memory,
it reschedules if needed between each block copied and dirtyfied.

We can also release the write lock at this rescheduling stage,
like did the bkl implicitly.

[ Impact: release the reiserfs write lock when it is not needed ]

Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

parent f32049dc

fs/reiserfs/journal.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -4232,7 +4232,9 @@ static int do_journal_end(struct reiserfs_transaction_handle *th,
		next = cn->next;
		free_cnode(sb, cn);
		cn = next;
		reiserfs_write_unlock(sb);
		cond_resched();
		reiserfs_write_lock(sb);
		}

		/* we are done with both the c_bh and d_bh, but

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