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 2006-09-08 14:21:43 -07:00
parent 379dfe9d0d
commit 1390334b4c
2 changed files with 2 additions and 183 deletions

View file

@ -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;

View file

@ -39,11 +39,6 @@ static inline void ocfs2_kick_vote_thread(struct ocfs2_super *osb)
}
int ocfs2_request_delete_vote(struct inode *inode);
int ocfs2_request_unlink_vote(struct inode *inode,
struct dentry *dentry,
unsigned int nlink);
int ocfs2_request_rename_vote(struct inode *inode,
struct dentry *dentry);
int ocfs2_request_mount_vote(struct ocfs2_super *osb);
int ocfs2_request_umount_vote(struct ocfs2_super *osb);
int ocfs2_register_net_handlers(struct ocfs2_super *osb);