[Cluster-devel] [GFS2 PATCH][TRY #2] GFS2: eliminate redundant log flush

[Steven Whitehouse]

Hi,

On Fri, 2012-09-14 at 10:42 -0400, Bob Peterson wrote:
> ----- Original Message -----
> | ----- Original Message -----
> | | What ensures that the revokes are on disk?
> | (snip)
> | | This one looks like it is probably correct, however there is no
> | | point
> | | in
> | | adding a comment to refer to code that has just been removed. Just
> | | remove that call and put the explanation in the patch description,
> | | or
> | | maybe include just a short comment so say that there is a log flush
> | | implicit in the write_inode_now() call,
> | | 
> | | Steve.
> | 
> | You're right about the revokes; my bad. Here is a respin, with just
> | a comment in the patch rather than in the code:
> | 
> | Hi,
> | 
> | In function gfs2_evict_inode, there was a call to gfs2_log_flush
> | that is unnecessary because it immediately calls write_inode_now
> | which makes another call to gfs2_log_flush. This patch eliminates
> | the redundant log flush.
> | 
> | Regards,
> | 
> | Bob Peterson
> | Red Hat GFS
> | 
> | Signed-off-by: Bob Peterson <rpeterso at redhat.com>
> | ---
> | diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
> | index 3cbac68..ba4fde5 100644
> | --- a/fs/gfs2/super.c
> | +++ b/fs/gfs2/super.c
> | @@ -1542,7 +1542,6 @@ static void gfs2_evict_inode(struct inode
> | *inode)
> |  	goto out_unlock;
> |  
> |  out_truncate:
> | -	gfs2_log_flush(sdp, ip->i_gl);
> |  	write_inode_now(inode, 1);
> |  	gfs2_ail_flush(ip->i_gl, 0);
> |  
> | 
> 
> Hi,
> 
> I've still not heard back on this revised patch from 09 Aug, and it
> has not gone into -nmw. Perhaps it was missed?
> 
> Regards,
> 
> Bob Peterson
> Red Hat File Systems

Yes, I think that might have fallen off the stack. Apologies for the
delay. However I think we should check with Ben as this is the same bit
of code that he is looking at currently,

Steve.