diff options
Diffstat (limited to 'fs/ocfs2/vote.c')
| -rw-r--r-- | fs/ocfs2/vote.c | 180 |
1 files changed, 2 insertions, 178 deletions
diff --git a/fs/ocfs2/vote.c b/fs/ocfs2/vote.c index cf70fe2075b..5b4dca79990 100644 --- a/fs/ocfs2/vote.c +++ b/fs/ocfs2/vote.c @@ -74,9 +74,6 @@ struct ocfs2_vote_msg __be32 v_orphaned_slot; /* Used during delete votes */ __be32 v_nlink; /* Used during unlink votes */ } md1; /* Message type dependant 1 */ - __be32 v_unlink_namelen; - __be64 v_unlink_parent; - u8 v_unlink_dirent[OCFS2_VOTE_FILENAME_LEN]; }; /* Responses are given these values to maintain backwards @@ -100,8 +97,6 @@ struct ocfs2_vote_work { enum ocfs2_vote_request { OCFS2_VOTE_REQ_INVALID = 0, OCFS2_VOTE_REQ_DELETE, - OCFS2_VOTE_REQ_UNLINK, - OCFS2_VOTE_REQ_RENAME, OCFS2_VOTE_REQ_MOUNT, OCFS2_VOTE_REQ_UMOUNT, OCFS2_VOTE_REQ_LAST @@ -261,103 +256,13 @@ done: return response; } -static int ocfs2_match_dentry(struct dentry *dentry, - u64 parent_blkno, - unsigned int namelen, - const char *name) -{ - struct inode *parent; - - if (!dentry->d_parent) { - mlog(0, "Detached from parent.\n"); - return 0; - } - - parent = dentry->d_parent->d_inode; - /* Negative parent dentry? */ - if (!parent) - return 0; - - /* Name is in a different directory. */ - if (OCFS2_I(parent)->ip_blkno != parent_blkno) - return 0; - - if (dentry->d_name.len != namelen) - return 0; - - /* comparison above guarantees this is safe. */ - if (memcmp(dentry->d_name.name, name, namelen)) - return 0; - - return 1; -} - -static void ocfs2_process_dentry_request(struct inode *inode, - int rename, - unsigned int new_nlink, - u64 parent_blkno, - unsigned int namelen, - const char *name) -{ - struct dentry *dentry = NULL; - struct list_head *p; - struct ocfs2_inode_info *oi = OCFS2_I(inode); - - mlog(0, "parent %llu, namelen = %u, name = %.*s\n", - (unsigned long long)parent_blkno, namelen, namelen, name); - - spin_lock(&dcache_lock); - - /* Another node is removing this name from the system. It is - * up to us to find the corresponding dentry and if it exists, - * unhash it from the dcache. */ - list_for_each(p, &inode->i_dentry) { - dentry = list_entry(p, struct dentry, d_alias); - - if (ocfs2_match_dentry(dentry, parent_blkno, namelen, name)) { - mlog(0, "dentry found: %.*s\n", - dentry->d_name.len, dentry->d_name.name); - - dget_locked(dentry); - break; - } - - dentry = NULL; - } - - spin_unlock(&dcache_lock); - - if (dentry) { - d_delete(dentry); - dput(dentry); - } - - /* rename votes don't send link counts */ - if (!rename) { - mlog(0, "new_nlink = %u\n", new_nlink); - - /* We don't have the proper locks here to directly - * change i_nlink and besides, the vote is sent - * *before* the operation so it may have failed on the - * other node. This passes a hint to ocfs2_drop_inode - * to force ocfs2_delete_inode, who will take the - * proper cluster locks to sort things out. */ - if (new_nlink == 0) { - spin_lock(&oi->ip_lock); - oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; - spin_unlock(&OCFS2_I(inode)->ip_lock); - } - } -} - static void ocfs2_process_vote(struct ocfs2_super *osb, struct ocfs2_vote_msg *msg) { int net_status, vote_response; int orphaned_slot = 0; - int rename = 0; - unsigned int node_num, generation, new_nlink, namelen; - u64 blkno, parent_blkno; + unsigned int node_num, generation; + u64 blkno; enum ocfs2_vote_request request; struct inode *inode = NULL; struct ocfs2_msg_hdr *hdr = &msg->v_hdr; @@ -437,18 +342,6 @@ static void ocfs2_process_vote(struct ocfs2_super *osb, vote_response = ocfs2_process_delete_request(inode, &orphaned_slot); break; - case OCFS2_VOTE_REQ_RENAME: - rename = 1; - /* fall through */ - case OCFS2_VOTE_REQ_UNLINK: - parent_blkno = be64_to_cpu(msg->v_unlink_parent); - namelen = be32_to_cpu(msg->v_unlink_namelen); - /* new_nlink will be ignored in case of a rename vote */ - new_nlink = be32_to_cpu(msg->md1.v_nlink); - ocfs2_process_dentry_request(inode, rename, new_nlink, - parent_blkno, namelen, - msg->v_unlink_dirent); - break; default: mlog(ML_ERROR, "node %u, invalid request: %u\n", node_num, request); @@ -889,75 +782,6 @@ int ocfs2_request_delete_vote(struct inode *inode) return status; } -static void ocfs2_setup_unlink_vote(struct ocfs2_vote_msg *request, - struct dentry *dentry) -{ - struct inode *parent = dentry->d_parent->d_inode; - - /* We need some values which will uniquely identify a dentry - * on the other nodes so that they can find it and run - * d_delete against it. Parent directory block and full name - * should suffice. */ - - mlog(0, "unlink/rename request: parent: %llu name: %.*s\n", - (unsigned long long)OCFS2_I(parent)->ip_blkno, dentry->d_name.len, - dentry->d_name.name); - - request->v_unlink_parent = cpu_to_be64(OCFS2_I(parent)->ip_blkno); - request->v_unlink_namelen = cpu_to_be32(dentry->d_name.len); - memcpy(request->v_unlink_dirent, dentry->d_name.name, - dentry->d_name.len); -} - -int ocfs2_request_unlink_vote(struct inode *inode, - struct dentry *dentry, - unsigned int nlink) -{ - int status; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct ocfs2_vote_msg *request; - - if (dentry->d_name.len > OCFS2_VOTE_FILENAME_LEN) - return -ENAMETOOLONG; - - status = -ENOMEM; - request = ocfs2_new_vote_request(osb, OCFS2_I(inode)->ip_blkno, - inode->i_generation, - OCFS2_VOTE_REQ_UNLINK, nlink); - if (request) { - ocfs2_setup_unlink_vote(request, dentry); - - status = ocfs2_request_vote(inode, request, NULL); - - kfree(request); - } - return status; -} - -int ocfs2_request_rename_vote(struct inode *inode, - struct dentry *dentry) -{ - int status; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct ocfs2_vote_msg *request; - - if (dentry->d_name.len > OCFS2_VOTE_FILENAME_LEN) - return -ENAMETOOLONG; - - status = -ENOMEM; - request = ocfs2_new_vote_request(osb, OCFS2_I(inode)->ip_blkno, - inode->i_generation, - OCFS2_VOTE_REQ_RENAME, 0); - if (request) { - ocfs2_setup_unlink_vote(request, dentry); - - status = ocfs2_request_vote(inode, request, NULL); - - kfree(request); - } - return status; -} - int ocfs2_request_mount_vote(struct ocfs2_super *osb) { int status; |