return ret;
}
-static int ocfs2_reflink_xattr_buckets(handle_t *handle,
+static int ocfs2_reflink_xattr_bucket(handle_t *handle,
u64 blkno, u64 new_blkno, u32 clusters,
+ u32 *cpos, int num_buckets,
struct ocfs2_alloc_context *meta_ac,
struct ocfs2_alloc_context *data_ac,
struct ocfs2_reflink_xattr_tree_args *args)
{
int i, j, ret = 0;
struct super_block *sb = args->reflink->old_inode->i_sb;
- u32 bpc = ocfs2_xattr_buckets_per_cluster(OCFS2_SB(sb));
- u32 num_buckets = clusters * bpc;
int bpb = args->old_bucket->bu_blocks;
struct ocfs2_xattr_value_buf vb = {
.vb_access = ocfs2_journal_access,
break;
}
- /*
- * The real bucket num in this series of blocks is stored
- * in the 1st bucket.
- */
- if (i == 0)
- num_buckets = le16_to_cpu(
- bucket_xh(args->old_bucket)->xh_num_buckets);
-
ret = ocfs2_xattr_bucket_journal_access(handle,
args->new_bucket,
OCFS2_JOURNAL_ACCESS_CREATE);
bucket_block(args->old_bucket, j),
sb->s_blocksize);
+ /*
+ * Record the start cpos so that we can use it to initialize
+ * our xattr tree we also set the xh_num_bucket for the new
+ * bucket.
+ */
+ if (i == 0) {
+ *cpos = le32_to_cpu(bucket_xh(args->new_bucket)->
+ xh_entries[0].xe_name_hash);
+ bucket_xh(args->new_bucket)->xh_num_buckets =
+ cpu_to_le16(num_buckets);
+ }
+
ocfs2_xattr_bucket_journal_dirty(handle, args->new_bucket);
ret = ocfs2_reflink_xattr_header(handle, args->reflink,
}
ocfs2_xattr_bucket_journal_dirty(handle, args->new_bucket);
+
ocfs2_xattr_bucket_relse(args->old_bucket);
ocfs2_xattr_bucket_relse(args->new_bucket);
}
ocfs2_xattr_bucket_relse(args->new_bucket);
return ret;
}
+
+static int ocfs2_reflink_xattr_buckets(handle_t *handle,
+ struct inode *inode,
+ struct ocfs2_reflink_xattr_tree_args *args,
+ struct ocfs2_extent_tree *et,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac,
+ u64 blkno, u32 cpos, u32 len)
+{
+ int ret, first_inserted = 0;
+ u32 p_cluster, num_clusters, reflink_cpos = 0;
+ u64 new_blkno;
+ unsigned int num_buckets, reflink_buckets;
+ unsigned int bpc =
+ ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb));
+
+ ret = ocfs2_read_xattr_bucket(args->old_bucket, blkno);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ num_buckets = le16_to_cpu(bucket_xh(args->old_bucket)->xh_num_buckets);
+ ocfs2_xattr_bucket_relse(args->old_bucket);
+
+ while (len && num_buckets) {
+ ret = ocfs2_claim_clusters(handle, data_ac,
+ 1, &p_cluster, &num_clusters);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ new_blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
+ reflink_buckets = min(num_buckets, bpc * num_clusters);
+
+ ret = ocfs2_reflink_xattr_bucket(handle, blkno,
+ new_blkno, num_clusters,
+ &reflink_cpos, reflink_buckets,
+ meta_ac, data_ac, args);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * For the 1st allocated cluster, we make it use the same cpos
+ * so that the xattr tree looks the same as the original one
+ * in the most case.
+ */
+ if (!first_inserted) {
+ reflink_cpos = cpos;
+ first_inserted = 1;
+ }
+ ret = ocfs2_insert_extent(handle, et, reflink_cpos, new_blkno,
+ num_clusters, 0, meta_ac);
+ if (ret)
+ mlog_errno(ret);
+
+ mlog(0, "insert new xattr extent rec start %llu len %u to %u\n",
+ (unsigned long long)new_blkno, num_clusters, reflink_cpos);
+
+ len -= num_clusters;
+ blkno += ocfs2_clusters_to_blocks(inode->i_sb, num_clusters);
+ num_buckets -= reflink_buckets;
+ }
+out:
+ return ret;
+}
+
/*
* Create the same xattr extent record in the new inode's xattr tree.
*/
void *para)
{
int ret, credits = 0;
- u32 p_cluster, num_clusters;
- u64 new_blkno;
handle_t *handle;
struct ocfs2_reflink_xattr_tree_args *args =
(struct ocfs2_reflink_xattr_tree_args *)para;
struct ocfs2_alloc_context *data_ac = NULL;
struct ocfs2_extent_tree et;
+ mlog(0, "reflink xattr buckets %llu len %u\n",
+ (unsigned long long)blkno, len);
+
ocfs2_init_xattr_tree_extent_tree(&et,
INODE_CACHE(args->reflink->new_inode),
args->new_blk_bh);
goto out;
}
- ret = ocfs2_claim_clusters(handle, data_ac,
- len, &p_cluster, &num_clusters);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- new_blkno = ocfs2_clusters_to_blocks(osb->sb, p_cluster);
-
- mlog(0, "reflink xattr buckets %llu to %llu, len %u\n",
- (unsigned long long)blkno, (unsigned long long)new_blkno, len);
- ret = ocfs2_reflink_xattr_buckets(handle, blkno, new_blkno, len,
- meta_ac, data_ac, args);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- mlog(0, "insert new xattr extent rec start %llu len %u to %u\n",
- (unsigned long long)new_blkno, len, cpos);
- ret = ocfs2_insert_extent(handle, &et, cpos, new_blkno,
- len, 0, meta_ac);
+ ret = ocfs2_reflink_xattr_buckets(handle, inode, args, &et,
+ meta_ac, data_ac,
+ blkno, cpos, len);
if (ret)
mlog_errno(ret);
-out_commit:
ocfs2_commit_trans(osb, handle);
out:
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff