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>
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 0ba98ca..5cd600b 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -4232,7 +4232,9 @@
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
