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ocfs2: Pass xs->bucket into ocfs2_add_new_xattr_bucket().

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Pass the actual target bucket for insert through to
ocfs2_add_new_xattr_bucket().  Now growing a bucket has no buffer_head
knowledge.

ocfs2_add_new_xattr_bucket() leavs xs->bucket in the proper state for
insert.  However, it doesn't update the rest of the search fields in xs,
so we still have to relse() and re-find.  That's OK, because everything
is cached.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Joel Becker 2008-11-26 15:25:41 -08:00 committed by Mark Fasheh
parent ed29c0ca14
commit 91f2033fa9
1 changed files with 25 additions and 27 deletions
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52
fs/ocfs2/xattr.c
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@ -4314,43 +4314,42 @@ out:
}
/*
* Add new xattr bucket in an extent record and adjust the buckets accordingly.
* xb_bh is the ocfs2_xattr_block.
* We will move all the buckets starting from header_bh to the next place. As
* for this one, half num of its xattrs will be moved to the next one.
* Add new xattr bucket in an extent record and adjust the buckets
* accordingly. xb_bh is the ocfs2_xattr_block, and target is the
* bucket we want to insert into.
*
* We will allocate a new cluster if current cluster is full. The
* underlying calls will make sure that there is space at the target
* bucket, shifting buckets around if necessary. 'target' may be updated
* by those calls.
* In the easy case, we will move all the buckets after target down by
* one. Half of target's xattrs will be moved to the next bucket.
*
* If current cluster is full, we'll allocate a new one. This may not
* be contiguous. The underlying calls will make sure that there is
* space for the insert, shifting buckets around if necessary.
* 'target' may be moved by those calls.
*/
static int ocfs2_add_new_xattr_bucket(struct inode *inode,
struct buffer_head *xb_bh,
struct buffer_head *header_bh,
struct ocfs2_xattr_bucket *target,
struct ocfs2_xattr_set_ctxt *ctxt)
{
struct ocfs2_xattr_block *xb =
(struct ocfs2_xattr_block *)xb_bh->b_data;
struct ocfs2_xattr_tree_root *xb_root = &xb->xb_attrs.xb_root;
struct ocfs2_extent_list *el = &xb_root->xt_list;
struct ocfs2_xattr_header *xh =
(struct ocfs2_xattr_header *)header_bh->b_data;
u32 name_hash = le32_to_cpu(xh->xh_entries[0].xe_name_hash);
u32 name_hash =
le32_to_cpu(bucket_xh(target)->xh_entries[0].xe_name_hash);
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
int ret, num_buckets, extend = 1;
u64 p_blkno;
u32 e_cpos, num_clusters;
/* The bucket at the front of the extent */
struct ocfs2_xattr_bucket *first, *target;
struct ocfs2_xattr_bucket *first;
mlog(0, "Add new xattr bucket starting form %llu\n",
(unsigned long long)header_bh->b_blocknr);
mlog(0, "Add new xattr bucket starting from %llu\n",
(unsigned long long)bucket_blkno(target));
/* The first bucket of the original extent */
first = ocfs2_xattr_bucket_new(inode);
/* The target bucket for insert */
target = ocfs2_xattr_bucket_new(inode);
if (!first || !target) {
if (!first) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
@ -4369,12 +4368,6 @@ static int ocfs2_add_new_xattr_bucket(struct inode *inode,
goto out;
}
ret = ocfs2_read_xattr_bucket(target, header_bh->b_blocknr);
if (ret) {
mlog_errno(ret);
goto out;
}
num_buckets = ocfs2_xattr_buckets_per_cluster(osb) * num_clusters;
if (num_buckets == le16_to_cpu(bucket_xh(first)->xh_num_buckets)) {
/*
@ -4407,7 +4400,6 @@ static int ocfs2_add_new_xattr_bucket(struct inode *inode,
out:
ocfs2_xattr_bucket_free(first);
ocfs2_xattr_bucket_free(target);
return ret;
}
@ -5083,15 +5075,21 @@ try_again:
ret = ocfs2_add_new_xattr_bucket(inode,
xs->xattr_bh,
xs->bucket->bu_bhs[0],
xs->bucket,
ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
/*
* ocfs2_add_new_xattr_bucket() will have updated
* xs->bucket if it moved, but it will not have updated
* any of the other search fields. Thus, we drop it and
* re-search. Everything should be cached, so it'll be
* quick.
*/
ocfs2_xattr_bucket_relse(xs->bucket);
ret = ocfs2_xattr_index_block_find(inode, xs->xattr_bh,
xi->name_index,
xi->name, xs);