lkml.org 
[lkml]   [2008]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 52/56] ocfs2: Pass buckets into ocfs2_mv_xattr_bucket_cross_cluster().
Date
From: Joel Becker <joel.becker@oracle.com>

Now that ocfs2_adjust_xattr_cross_cluster() has buckets, it can pass
them into ocfs2_mv_xattr_bucket_cross_cluster(). It no longer has to
care about buffer_heads. The manipulation of first_bh and header_bh
moves up to ocfs2_adjust_xattr_cross_cluster().

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/ocfs2/xattr.c | 84 +++++++++++++++++++++++------------------------------
1 files changed, 37 insertions(+), 47 deletions(-)
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 975ba36..2f16f50 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -3548,42 +3548,28 @@ out:
*/
static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
handle_t *handle,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u64 new_blkno,
- u64 prev_blkno,
u32 num_clusters,
u32 *first_hash)
{
int ret;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
+ struct super_block *sb = inode->i_sb;
+ int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(sb);
+ int num_buckets = ocfs2_xattr_buckets_per_cluster(OCFS2_SB(sb));
int to_move = num_buckets / 2;
u64 src_blkno;
- u64 last_cluster_blkno = prev_blkno +
- ((num_clusters - 1) * ocfs2_clusters_to_blocks(inode->i_sb, 1));
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)((*first_bh)->b_data);
- struct ocfs2_xattr_bucket *new_target, *new_first;
+ u64 last_cluster_blkno = bucket_blkno(first) +
+ ((num_clusters - 1) * ocfs2_clusters_to_blocks(sb, 1));

- BUG_ON(le16_to_cpu(xh->xh_num_buckets) < num_buckets);
- BUG_ON(OCFS2_XATTR_BUCKET_SIZE == osb->s_clustersize);
+ BUG_ON(le16_to_cpu(bucket_xh(first)->xh_num_buckets) < num_buckets);
+ BUG_ON(OCFS2_XATTR_BUCKET_SIZE == OCFS2_SB(sb)->s_clustersize);

mlog(0, "move half of xattrs in cluster %llu to %llu\n",
(unsigned long long)last_cluster_blkno, (unsigned long long)new_blkno);

- /* The first bucket of the new extent */
- new_first = ocfs2_xattr_bucket_new(inode);
- /* The target bucket if it was moved to the new extent */
- new_target = ocfs2_xattr_bucket_new(inode);
- if (!new_target || !new_first) {
- ret = -ENOMEM;
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_mv_xattr_buckets(inode, handle, prev_blkno,
+ ret = ocfs2_mv_xattr_buckets(inode, handle, bucket_blkno(first),
last_cluster_blkno, new_blkno,
to_move, first_hash);
if (ret) {
@@ -3596,41 +3582,32 @@ static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,

/*
* If the target bucket was part of the moved buckets, we need to
- * update first_bh and header_bh.
+ * update first and target.
*/
- if ((*header_bh)->b_blocknr >= src_blkno) {
+ if (bucket_blkno(target) >= src_blkno) {
/* Find the block for the new target bucket */
src_blkno = new_blkno +
- ((*header_bh)->b_blocknr - src_blkno);
+ (bucket_blkno(target) - src_blkno);
+
+ ocfs2_xattr_bucket_relse(first);
+ ocfs2_xattr_bucket_relse(target);

/*
* These shouldn't fail - the buffers are in the
* journal from ocfs2_cp_xattr_bucket().
*/
- ret = ocfs2_read_xattr_bucket(new_first, new_blkno);
+ ret = ocfs2_read_xattr_bucket(first, new_blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_read_xattr_bucket(new_target, src_blkno);
- if (ret) {
+ ret = ocfs2_read_xattr_bucket(target, src_blkno);
+ if (ret)
mlog_errno(ret);
- goto out;
- }

- brelse(*first_bh);
- *first_bh = new_first->bu_bhs[0];
- get_bh(*first_bh);
-
- brelse(*header_bh);
- *header_bh = new_target->bu_bhs[0];
- get_bh(*header_bh);
}

out:
- ocfs2_xattr_bucket_free(new_first);
- ocfs2_xattr_bucket_free(new_target);
-
return ret;
}

@@ -4141,16 +4118,29 @@ static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
goto out;
}

- if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1)
+ if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1) {
ret = ocfs2_mv_xattr_bucket_cross_cluster(inode,
handle,
- first_bh,
- header_bh,
+ first, target,
new_blk,
- bucket_blkno(first),
prev_clusters,
v_start);
- else {
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /* Did first+target get moved? */
+ if (prev_blk != bucket_blkno(first)) {
+ brelse(*first_bh);
+ *first_bh = first->bu_bhs[0];
+ get_bh(*first_bh);
+
+ brelse(*header_bh);
+ *header_bh = target->bu_bhs[0];
+ get_bh(*header_bh);
+ }
+ } else {
/* The start of the last cluster in the first extent */
u64 last_blk = bucket_blkno(first) +
((prev_clusters - 1) *
--
1.5.6


\
 
 \ /
  Last update: 2008-12-22 23:55    [from the cache]
©2003-2011 Jasper Spaans