On Fri, May 01, 2009 at 09:09:11AM +0200, Ingo Molnar wrote: > > * Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote: > > > 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@xxxxxxxx> > > Cc: Chris Mason <chris.mason@xxxxxxxxxx> > > Cc: Alexander Beregalov <a.beregalov@xxxxxxxxx> > > Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> > > --- > > fs/reiserfs/journal.c | 2 ++ > > 1 files changed, 2 insertions(+), 0 deletions(-) > > > > diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c > > index 7976d7d..373d080 100644 > > --- a/fs/reiserfs/journal.c > > +++ b/fs/reiserfs/journal.c > > @@ -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); > > There's 8 cond_resched()'s in the code - i'd suggest to introduce a > helper for this - reiserfs_write_cond_resched(sb) or so? > > Ingo Indeed, that + the pattern suggested by Al. Thanks. -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
