mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-21 11:53:01 +00:00
ocfs2: Attach xattr clusters to refcount tree.
In ocfs2, when xattr's value is larger than OCFS2_XATTR_INLINE_SIZE, it will be kept outside of the blocks we store xattr entry. And they are stored in a b-tree also. So this patch try to attach all these clusters to refcount tree also. Signed-off-by: Tao Ma <tao.ma@oracle.com>
This commit is contained in:
Tao Ma
Joel Becker
parent
47bca4950b
commit
0129241e2b
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@ -3547,7 +3547,8 @@ int ocfs2_add_refcount_flag(struct inode *inode,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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u32 cpos, u32 p_cluster, u32 num_clusters,
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struct ocfs2_cached_dealloc_ctxt *dealloc)
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struct ocfs2_cached_dealloc_ctxt *dealloc,
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struct ocfs2_post_refcount *post)
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{
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int ret;
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handle_t *handle;
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@ -3576,6 +3577,9 @@ int ocfs2_add_refcount_flag(struct inode *inode,
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}
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}
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if (post)
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credits += post->credits;
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handle = ocfs2_start_trans(osb, credits);
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if (IS_ERR(handle)) {
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ret = PTR_ERR(handle);
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@ -3594,8 +3598,16 @@ int ocfs2_add_refcount_flag(struct inode *inode,
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ret = __ocfs2_increase_refcount(handle, ref_ci, ref_root_bh,
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p_cluster, num_clusters,
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meta_ac, dealloc);
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if (ret)
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if (ret) {
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mlog_errno(ret);
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goto out_commit;
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}
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if (post && post->func) {
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ret = post->func(inode, handle, post->para);
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if (ret)
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mlog_errno(ret);
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}
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out_commit:
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ocfs2_commit_trans(osb, handle);
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@ -3688,7 +3700,7 @@ static int ocfs2_attach_refcount_tree(struct inode *inode,
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&ref_tree->rf_ci,
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ref_root_bh, cpos,
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p_cluster, num_clusters,
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&dealloc);
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&dealloc, NULL);
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if (ret) {
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mlog_errno(ret);
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goto unlock;
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@ -3699,6 +3711,17 @@ static int ocfs2_attach_refcount_tree(struct inode *inode,
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cpos += num_clusters;
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}
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if (oi->ip_dyn_features & OCFS2_HAS_XATTR_FL) {
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ret = ocfs2_xattr_attach_refcount_tree(inode, di_bh,
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&ref_tree->rf_ci,
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ref_root_bh,
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&dealloc);
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if (ret) {
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mlog_errno(ret);
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goto unlock;
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}
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}
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if (data_changed) {
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ret = ocfs2_change_ctime(inode, di_bh);
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if (ret)
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@ -83,4 +83,11 @@ int ocfs2_refcount_cow_xattr(struct inode *inode,
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struct buffer_head *ref_root_bh,
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u32 cpos, u32 write_len,
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struct ocfs2_post_refcount *post);
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int ocfs2_add_refcount_flag(struct inode *inode,
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struct ocfs2_extent_tree *data_et,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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u32 cpos, u32 p_cluster, u32 num_clusters,
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struct ocfs2_cached_dealloc_ctxt *dealloc,
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struct ocfs2_post_refcount *post);
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#endif /* OCFS2_REFCOUNTTREE_H */
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291
fs/ocfs2/xattr.c
291
fs/ocfs2/xattr.c
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@ -5550,6 +5550,297 @@ out:
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return ret;
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}
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/*
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* Add the REFCOUNTED flags for all the extent rec in ocfs2_xattr_value_root.
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* The physical clusters will be added to refcount tree.
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*/
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static int ocfs2_xattr_value_attach_refcount(struct inode *inode,
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struct ocfs2_xattr_value_root *xv,
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struct ocfs2_extent_tree *value_et,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc,
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struct ocfs2_post_refcount *refcount)
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{
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int ret = 0;
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u32 clusters = le32_to_cpu(xv->xr_clusters);
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u32 cpos, p_cluster, num_clusters;
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struct ocfs2_extent_list *el = &xv->xr_list;
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unsigned int ext_flags;
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cpos = 0;
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while (cpos < clusters) {
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ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
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&num_clusters, el, &ext_flags);
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cpos += num_clusters;
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if ((ext_flags & OCFS2_EXT_REFCOUNTED))
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continue;
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BUG_ON(!p_cluster);
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ret = ocfs2_add_refcount_flag(inode, value_et,
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ref_ci, ref_root_bh,
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cpos - num_clusters,
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p_cluster, num_clusters,
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dealloc, refcount);
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if (ret) {
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mlog_errno(ret);
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break;
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}
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}
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return ret;
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}
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/*
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* Given a normal ocfs2_xattr_header, refcount all the entries which
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* have value stored outside.
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* Used for xattrs stored in inode and ocfs2_xattr_block.
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*/
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static int ocfs2_xattr_attach_refcount_normal(struct inode *inode,
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struct ocfs2_xattr_value_buf *vb,
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struct ocfs2_xattr_header *header,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc)
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{
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struct ocfs2_xattr_entry *xe;
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struct ocfs2_xattr_value_root *xv;
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struct ocfs2_extent_tree et;
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int i, ret = 0;
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for (i = 0; i < le16_to_cpu(header->xh_count); i++) {
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xe = &header->xh_entries[i];
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if (ocfs2_xattr_is_local(xe))
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continue;
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xv = (struct ocfs2_xattr_value_root *)((void *)header +
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le16_to_cpu(xe->xe_name_offset) +
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OCFS2_XATTR_SIZE(xe->xe_name_len));
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vb->vb_xv = xv;
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ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);
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ret = ocfs2_xattr_value_attach_refcount(inode, xv, &et,
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ref_ci, ref_root_bh,
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dealloc, NULL);
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if (ret) {
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mlog_errno(ret);
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break;
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}
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}
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return ret;
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}
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static int ocfs2_xattr_inline_attach_refcount(struct inode *inode,
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struct buffer_head *fe_bh,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc)
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{
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struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;
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struct ocfs2_xattr_header *header = (struct ocfs2_xattr_header *)
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(fe_bh->b_data + inode->i_sb->s_blocksize -
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le16_to_cpu(di->i_xattr_inline_size));
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struct ocfs2_xattr_value_buf vb = {
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.vb_bh = fe_bh,
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.vb_access = ocfs2_journal_access_di,
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};
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return ocfs2_xattr_attach_refcount_normal(inode, &vb, header,
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ref_ci, ref_root_bh, dealloc);
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}
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struct ocfs2_xattr_tree_value_refcount_para {
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struct ocfs2_caching_info *ref_ci;
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struct buffer_head *ref_root_bh;
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struct ocfs2_cached_dealloc_ctxt *dealloc;
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};
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static int ocfs2_get_xattr_tree_value_root(struct super_block *sb,
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struct ocfs2_xattr_bucket *bucket,
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int offset,
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struct ocfs2_xattr_value_root **xv,
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struct buffer_head **bh)
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{
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int ret, block_off, name_offset;
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struct ocfs2_xattr_header *xh = bucket_xh(bucket);
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struct ocfs2_xattr_entry *xe = &xh->xh_entries[offset];
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void *base;
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ret = ocfs2_xattr_bucket_get_name_value(sb,
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bucket_xh(bucket),
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offset,
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&block_off,
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&name_offset);
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if (ret) {
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mlog_errno(ret);
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goto out;
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}
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base = bucket_block(bucket, block_off);
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*xv = (struct ocfs2_xattr_value_root *)(base + name_offset +
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OCFS2_XATTR_SIZE(xe->xe_name_len));
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if (bh)
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*bh = bucket->bu_bhs[block_off];
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out:
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return ret;
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}
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/*
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* For a given xattr bucket, refcount all the entries which
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* have value stored outside.
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*/
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static int ocfs2_xattr_bucket_value_refcount(struct inode *inode,
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struct ocfs2_xattr_bucket *bucket,
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void *para)
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{
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int i, ret = 0;
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struct ocfs2_extent_tree et;
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struct ocfs2_xattr_tree_value_refcount_para *ref =
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(struct ocfs2_xattr_tree_value_refcount_para *)para;
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struct ocfs2_xattr_header *xh =
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(struct ocfs2_xattr_header *)bucket->bu_bhs[0]->b_data;
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struct ocfs2_xattr_entry *xe;
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struct ocfs2_xattr_value_buf vb = {
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.vb_access = ocfs2_journal_access,
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};
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struct ocfs2_post_refcount refcount = {
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.credits = bucket->bu_blocks,
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.para = bucket,
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.func = ocfs2_xattr_bucket_post_refcount,
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};
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struct ocfs2_post_refcount *p = NULL;
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/* We only need post_refcount if we support metaecc. */
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if (ocfs2_meta_ecc(OCFS2_SB(inode->i_sb)))
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p = &refcount;
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mlog(0, "refcount bucket %llu, count = %u\n",
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(unsigned long long)bucket_blkno(bucket),
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le16_to_cpu(xh->xh_count));
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for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {
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xe = &xh->xh_entries[i];
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if (ocfs2_xattr_is_local(xe))
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continue;
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ret = ocfs2_get_xattr_tree_value_root(inode->i_sb, bucket, i,
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&vb.vb_xv, &vb.vb_bh);
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if (ret) {
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mlog_errno(ret);
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break;
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}
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ocfs2_init_xattr_value_extent_tree(&et,
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INODE_CACHE(inode), &vb);
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ret = ocfs2_xattr_value_attach_refcount(inode, vb.vb_xv,
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&et, ref->ref_ci,
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ref->ref_root_bh,
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ref->dealloc, p);
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if (ret) {
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mlog_errno(ret);
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break;
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}
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}
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return ret;
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}
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static int ocfs2_refcount_xattr_tree_rec(struct inode *inode,
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struct buffer_head *root_bh,
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u64 blkno, u32 cpos, u32 len, void *para)
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{
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return ocfs2_iterate_xattr_buckets(inode, blkno, len,
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ocfs2_xattr_bucket_value_refcount,
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para);
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}
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static int ocfs2_xattr_block_attach_refcount(struct inode *inode,
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struct buffer_head *blk_bh,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc)
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{
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int ret = 0;
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struct ocfs2_xattr_block *xb =
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(struct ocfs2_xattr_block *)blk_bh->b_data;
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if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
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struct ocfs2_xattr_header *header = &xb->xb_attrs.xb_header;
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struct ocfs2_xattr_value_buf vb = {
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.vb_bh = blk_bh,
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.vb_access = ocfs2_journal_access_xb,
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};
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ret = ocfs2_xattr_attach_refcount_normal(inode, &vb, header,
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ref_ci, ref_root_bh,
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dealloc);
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} else {
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struct ocfs2_xattr_tree_value_refcount_para para = {
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.ref_ci = ref_ci,
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.ref_root_bh = ref_root_bh,
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.dealloc = dealloc,
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};
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ret = ocfs2_iterate_xattr_index_block(inode, blk_bh,
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ocfs2_refcount_xattr_tree_rec,
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¶);
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}
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return ret;
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}
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int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
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struct buffer_head *fe_bh,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc)
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{
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int ret = 0;
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struct ocfs2_inode_info *oi = OCFS2_I(inode);
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struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;
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struct buffer_head *blk_bh = NULL;
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if (oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) {
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ret = ocfs2_xattr_inline_attach_refcount(inode, fe_bh,
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ref_ci, ref_root_bh,
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dealloc);
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if (ret) {
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mlog_errno(ret);
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goto out;
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}
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}
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if (!di->i_xattr_loc)
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goto out;
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ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),
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&blk_bh);
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if (ret < 0) {
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mlog_errno(ret);
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goto out;
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}
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ret = ocfs2_xattr_block_attach_refcount(inode, blk_bh, ref_ci,
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ref_root_bh, dealloc);
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if (ret)
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mlog_errno(ret);
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brelse(blk_bh);
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out:
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return ret;
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}
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/*
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* 'security' attributes support
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*/
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@ -83,5 +83,9 @@ struct ocfs2_xattr_value_buf {
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struct ocfs2_xattr_value_root *vb_xv;
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};
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int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
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struct buffer_head *fe_bh,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc);
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#endif /* OCFS2_XATTR_H */
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