__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
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
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;
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);
{
struct ocfs2_net_wait_ctxt *w;
- w = kcalloc(1, sizeof(*w), GFP_NOFS);
+ w = kzalloc(sizeof(*w), GFP_NOFS);
if (!w) {
mlog_errno(-ENOMEM);
goto bail;
BUG_ON(!ocfs2_is_valid_vote_request(type));
- request = kcalloc(1, sizeof(*request), GFP_NOFS);
+ request = kzalloc(sizeof(*request), GFP_NOFS);
if (!request) {
mlog_errno(-ENOMEM);
} else {
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;
static int ocfs2_handle_response_message(struct o2net_msg *msg,
u32 len,
- void *data)
+ void *data, void **ret_data)
{
unsigned int response_id, node_num;
int response_status;
static int ocfs2_handle_vote_message(struct o2net_msg *msg,
u32 len,
- void *data)
+ void *data, void **ret_data)
{
int status;
struct ocfs2_super *osb = data;
{
int status = 0;
+ if (ocfs2_mount_local(osb))
+ return 0;
+
status = o2net_register_handler(OCFS2_MESSAGE_TYPE_RESPONSE,
osb->net_key,
sizeof(struct ocfs2_response_msg),
ocfs2_handle_response_message,
- osb, &osb->osb_net_handlers);
+ osb, NULL, &osb->osb_net_handlers);
if (status) {
mlog_errno(status);
goto bail;
osb->net_key,
sizeof(struct ocfs2_vote_msg),
ocfs2_handle_vote_message,
- osb, &osb->osb_net_handlers);
+ osb, NULL, &osb->osb_net_handlers);
if (status) {
mlog_errno(status);
goto bail;
projects / linux-drm-fsl-dcu.git / blobdiff