mirror of https://gitee.com/openkylin/linux.git
ocfs2: Remove the dentry vote
This is unused now. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Mark Fasheh
parent
379dfe9d0d
commit
1390334b4c
180
fs/ocfs2/vote.c
180
fs/ocfs2/vote.c
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@ -74,9 +74,6 @@ struct ocfs2_vote_msg
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__be32 v_orphaned_slot; /* Used during delete votes */
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__be32 v_nlink; /* Used during unlink votes */
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} md1; /* Message type dependant 1 */
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__be32 v_unlink_namelen;
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__be64 v_unlink_parent;
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u8 v_unlink_dirent[OCFS2_VOTE_FILENAME_LEN];
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};
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/* Responses are given these values to maintain backwards
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@ -100,8 +97,6 @@ struct ocfs2_vote_work {
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enum ocfs2_vote_request {
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OCFS2_VOTE_REQ_INVALID = 0,
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OCFS2_VOTE_REQ_DELETE,
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OCFS2_VOTE_REQ_UNLINK,
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OCFS2_VOTE_REQ_RENAME,
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OCFS2_VOTE_REQ_MOUNT,
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OCFS2_VOTE_REQ_UMOUNT,
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OCFS2_VOTE_REQ_LAST
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@ -261,103 +256,13 @@ static int ocfs2_process_delete_request(struct inode *inode,
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return response;
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}
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static int ocfs2_match_dentry(struct dentry *dentry,
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u64 parent_blkno,
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unsigned int namelen,
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const char *name)
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{
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struct inode *parent;
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if (!dentry->d_parent) {
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mlog(0, "Detached from parent.\n");
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return 0;
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}
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parent = dentry->d_parent->d_inode;
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/* Negative parent dentry? */
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if (!parent)
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return 0;
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/* Name is in a different directory. */
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if (OCFS2_I(parent)->ip_blkno != parent_blkno)
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return 0;
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if (dentry->d_name.len != namelen)
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return 0;
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/* comparison above guarantees this is safe. */
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if (memcmp(dentry->d_name.name, name, namelen))
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return 0;
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return 1;
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}
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static void ocfs2_process_dentry_request(struct inode *inode,
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int rename,
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unsigned int new_nlink,
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u64 parent_blkno,
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unsigned int namelen,
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const char *name)
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{
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struct dentry *dentry = NULL;
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struct list_head *p;
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struct ocfs2_inode_info *oi = OCFS2_I(inode);
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mlog(0, "parent %llu, namelen = %u, name = %.*s\n",
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(unsigned long long)parent_blkno, namelen, namelen, name);
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spin_lock(&dcache_lock);
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/* Another node is removing this name from the system. It is
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* up to us to find the corresponding dentry and if it exists,
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* unhash it from the dcache. */
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list_for_each(p, &inode->i_dentry) {
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dentry = list_entry(p, struct dentry, d_alias);
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if (ocfs2_match_dentry(dentry, parent_blkno, namelen, name)) {
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mlog(0, "dentry found: %.*s\n",
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dentry->d_name.len, dentry->d_name.name);
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dget_locked(dentry);
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break;
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}
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dentry = NULL;
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}
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spin_unlock(&dcache_lock);
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if (dentry) {
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d_delete(dentry);
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dput(dentry);
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}
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/* rename votes don't send link counts */
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if (!rename) {
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mlog(0, "new_nlink = %u\n", new_nlink);
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/* We don't have the proper locks here to directly
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* change i_nlink and besides, the vote is sent
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* *before* the operation so it may have failed on the
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* other node. This passes a hint to ocfs2_drop_inode
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* to force ocfs2_delete_inode, who will take the
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* proper cluster locks to sort things out. */
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if (new_nlink == 0) {
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spin_lock(&oi->ip_lock);
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oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
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spin_unlock(&OCFS2_I(inode)->ip_lock);
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}
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}
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}
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static void ocfs2_process_vote(struct ocfs2_super *osb,
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struct ocfs2_vote_msg *msg)
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{
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int net_status, vote_response;
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int orphaned_slot = 0;
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int rename = 0;
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unsigned int node_num, generation, new_nlink, namelen;
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u64 blkno, parent_blkno;
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unsigned int node_num, generation;
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u64 blkno;
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enum ocfs2_vote_request request;
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struct inode *inode = NULL;
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struct ocfs2_msg_hdr *hdr = &msg->v_hdr;
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@ -437,18 +342,6 @@ static void ocfs2_process_vote(struct ocfs2_super *osb,
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vote_response = ocfs2_process_delete_request(inode,
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&orphaned_slot);
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break;
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case OCFS2_VOTE_REQ_RENAME:
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rename = 1;
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/* fall through */
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case OCFS2_VOTE_REQ_UNLINK:
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parent_blkno = be64_to_cpu(msg->v_unlink_parent);
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namelen = be32_to_cpu(msg->v_unlink_namelen);
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/* new_nlink will be ignored in case of a rename vote */
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new_nlink = be32_to_cpu(msg->md1.v_nlink);
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ocfs2_process_dentry_request(inode, rename, new_nlink,
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parent_blkno, namelen,
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msg->v_unlink_dirent);
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break;
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default:
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mlog(ML_ERROR, "node %u, invalid request: %u\n",
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node_num, request);
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@ -889,75 +782,6 @@ int ocfs2_request_delete_vote(struct inode *inode)
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return status;
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}
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static void ocfs2_setup_unlink_vote(struct ocfs2_vote_msg *request,
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struct dentry *dentry)
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{
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struct inode *parent = dentry->d_parent->d_inode;
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/* We need some values which will uniquely identify a dentry
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* on the other nodes so that they can find it and run
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* d_delete against it. Parent directory block and full name
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* should suffice. */
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mlog(0, "unlink/rename request: parent: %llu name: %.*s\n",
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(unsigned long long)OCFS2_I(parent)->ip_blkno, dentry->d_name.len,
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dentry->d_name.name);
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request->v_unlink_parent = cpu_to_be64(OCFS2_I(parent)->ip_blkno);
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request->v_unlink_namelen = cpu_to_be32(dentry->d_name.len);
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memcpy(request->v_unlink_dirent, dentry->d_name.name,
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dentry->d_name.len);
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}
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int ocfs2_request_unlink_vote(struct inode *inode,
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struct dentry *dentry,
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unsigned int nlink)
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{
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int status;
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struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
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struct ocfs2_vote_msg *request;
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if (dentry->d_name.len > OCFS2_VOTE_FILENAME_LEN)
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return -ENAMETOOLONG;
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status = -ENOMEM;
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request = ocfs2_new_vote_request(osb, OCFS2_I(inode)->ip_blkno,
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inode->i_generation,
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OCFS2_VOTE_REQ_UNLINK, nlink);
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if (request) {
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ocfs2_setup_unlink_vote(request, dentry);
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status = ocfs2_request_vote(inode, request, NULL);
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kfree(request);
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}
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return status;
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}
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int ocfs2_request_rename_vote(struct inode *inode,
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struct dentry *dentry)
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{
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int status;
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struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
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struct ocfs2_vote_msg *request;
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if (dentry->d_name.len > OCFS2_VOTE_FILENAME_LEN)
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return -ENAMETOOLONG;
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status = -ENOMEM;
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request = ocfs2_new_vote_request(osb, OCFS2_I(inode)->ip_blkno,
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inode->i_generation,
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OCFS2_VOTE_REQ_RENAME, 0);
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if (request) {
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ocfs2_setup_unlink_vote(request, dentry);
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status = ocfs2_request_vote(inode, request, NULL);
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kfree(request);
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}
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return status;
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}
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int ocfs2_request_mount_vote(struct ocfs2_super *osb)
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{
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int status;
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@ -39,11 +39,6 @@ static inline void ocfs2_kick_vote_thread(struct ocfs2_super *osb)
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}
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int ocfs2_request_delete_vote(struct inode *inode);
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int ocfs2_request_unlink_vote(struct inode *inode,
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struct dentry *dentry,
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unsigned int nlink);
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int ocfs2_request_rename_vote(struct inode *inode,
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struct dentry *dentry);
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int ocfs2_request_mount_vote(struct ocfs2_super *osb);
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int ocfs2_request_umount_vote(struct ocfs2_super *osb);
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int ocfs2_register_net_handlers(struct ocfs2_super *osb);
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