[Ocfs2-devel] [PATCH 1/2] ocfs2/xattr: Remove additional bucket allocation in bucket defragment.

[Ocfs2-devel] [PATCH 1/2] ocfs2/xattr: Remove additional bucket allocation in bucket defragment.

[Tao Ma]

Joel has refactored xattr bucket and make xattr bucket a general
wrapper. So in ocfs2_defrag_xattr_bucket, we have already passed the
bucket in, so there is no need to allocate a new one and read it.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
---
 fs/ocfs2/xattr.c |   26 +++++++-------------------
 1 files changed, 7 insertions(+), 19 deletions(-)

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index b0a73c2..501c9e7 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2896,7 +2896,6 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
 	size_t blocksize = inode->i_sb->s_blocksize;
 	handle_t *handle;
 	struct ocfs2_xattr_entry *xe;
-	struct ocfs2_xattr_bucket *wb = NULL;
 
 	/*
 	 * In order to make the operation more efficient and generic,
@@ -2910,21 +2909,11 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
 		goto out;
 	}
 
-	wb = ocfs2_xattr_bucket_new(inode);
-	if (!wb) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	ret = ocfs2_read_xattr_bucket(wb, blkno);
-	if (ret)
-		goto out;
-
 	buf = bucket_buf;
-	for (i = 0; i < wb->bu_blocks; i++, buf += blocksize)
-		memcpy(buf, bucket_block(wb, i), blocksize);
+	for (i = 0; i < bucket->bu_blocks; i++, buf += blocksize)
+		memcpy(buf, bucket_block(bucket, i), blocksize);
 
-	handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)), wb->bu_blocks);
+	handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)), bucket->bu_blocks);
 	if (IS_ERR(handle)) {
 		ret = PTR_ERR(handle);
 		handle = NULL;
@@ -2932,7 +2921,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
 		goto out;
 	}
 
-	ret = ocfs2_xattr_bucket_journal_access(handle, wb,
+	ret = ocfs2_xattr_bucket_journal_access(handle, bucket,
 						OCFS2_JOURNAL_ACCESS_WRITE);
 	if (ret < 0) {
 		mlog_errno(ret);
@@ -3005,14 +2994,13 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
 	     cmp_xe, swap_xe);
 
 	buf = bucket_buf;
-	for (i = 0; i < wb->bu_blocks; i++, buf += blocksize)
-		memcpy(bucket_block(wb, i), buf, blocksize);
-	ocfs2_xattr_bucket_journal_dirty(handle, wb);
+	for (i = 0; i < bucket->bu_blocks; i++, buf += blocksize)
+		memcpy(bucket_block(bucket, i), buf, blocksize);
+	ocfs2_xattr_bucket_journal_dirty(handle, bucket);
 
 commit:
 	ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
 out:
-	ocfs2_xattr_bucket_free(wb);
 	kfree(bucket_buf);
 	return ret;
 }
-- 
1.5.4.GIT

[Ocfs2-devel] [PATCH 2/2] ocfs2/xattr: Only set buffer update if it doesn't exist in cache.

[Tao Ma]

When we call ocfs2_init_xattr_bucket, we deem that the new buffer head
will be written to disk immediately, so we just use sb_getblk. But in
some cases the buffer may have already been in ocfs2 uptodate cache,
so we only call ocfs2_set_buffer_uptodate if the buffer head isn't
in the cache.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
---
 fs/ocfs2/xattr.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 501c9e7..5244c5d 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -219,8 +219,10 @@ static int ocfs2_init_xattr_bucket(struct ocfs2_xattr_bucket *bucket,
 			break;
 		}
 
-		ocfs2_set_new_buffer_uptodate(bucket->bu_inode,
-					      bucket->bu_bhs[i]);
+		if (!ocfs2_buffer_uptodate(bucket->bu_inode,
+					   bucket->bu_bhs[i]))
+			ocfs2_set_new_buffer_uptodate(bucket->bu_inode,
+						      bucket->bu_bhs[i]);
 	}
 
 	if (rc)
-- 
1.5.4.GIT

[Ocfs2-devel] [PATCH 0/2] Two minor fixes for Joel's xattr-buckets branch.

[Tao Ma]

Hi Joel,
	These 2 patches are minor fixes and improvement for your xattr -buckets 
branch. Could you please review them? And if they are OK, please push 
them to your branch so that I can rebase my transaction merge patch set 
on it. One is for ocfs2_defrag_xattr_bucket improvement and another is 
for the ocfs2_buffer_uptodate check in ocfs2_init_xattr_bucket. I saw 
your branch haven't been updated for some days, so create these 2 
patches for you. ;)

Mark,
	these 2 patches can be pushed into Joel's branch so that you can 
finally pull them together with acls after we rebase on it.

Regards,
Tao

[Ocfs2-devel] [PATCH 0/2] Two minor fixes for Joel's xattr-buckets branch.

[Joel Becker]

On Thu, Nov 06, 2008 at 03:32:23PM +0800, Tao Ma wrote:
> Hi Joel,
> 	These 2 patches are minor fixes and improvement for your xattr -buckets  
> branch. Could you please review them? And if they are OK, please push  
> them to your branch so that I can rebase my transaction merge patch set  
> on it. One is for ocfs2_defrag_xattr_bucket improvement and another is  
> for the ocfs2_buffer_uptodate check in ocfs2_init_xattr_bucket. I saw  
> your branch haven't been updated for some days, so create these 2  
> patches for you. ;)

	Thanks Tao, these are pushed to my xattr-buckets branch now.

Joel

-- 

"In a crisis, don't hide behind anything or anybody. They're going
 to find you anyway."
	- Paul "Bear" Bryant

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127