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-   -   GFS2: eliminate redundant log flush (http://www.linux-archive.org/cluster-development/692276-gfs2-eliminate-redundant-log-flush.html)

Bob Peterson 08-09-2012 03:12 PM

GFS2: eliminate redundant log flush
 
----- 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@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);


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