return 0;
no_locks:
- if (host)
- nlm_release_host(host);
+ nlm_release_host(host);
if (error)
return error;
return nlm_lck_denied_nolocks;
return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now check for conflicting locks */
- resp->status = nlmsvc_testlock(rqstp, file, &argp->lock, &resp->lock, &resp->cookie);
+ resp->status = nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie);
if (resp->status == nlm_drop_reply)
rc = rpc_drop_reply;
else
#endif
/* Now try to lock the file */
- resp->status = nlmsvc_lock(rqstp, file, &argp->lock,
+ resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
argp->block, &argp->cookie);
if (resp->status == nlm_drop_reply)
rc = rpc_drop_reply;
static void nlm4svc_callback_release(void *data)
{
+ lock_kernel();
nlm_release_call(data);
+ unlock_kernel();
}
static const struct rpc_call_ops nlm4svc_callback_ops = {
static inline int nlm_cookie_match(struct nlm_cookie *a, struct nlm_cookie *b)
{
- if(a->len != b->len)
+ if (a->len != b->len)
return 0;
- if(memcmp(a->data,b->data,a->len))
+ if (memcmp(a->data, b->data, a->len))
return 0;
return 1;
}
struct nlm_block *block;
struct nlm_rqst *call = NULL;
+ nlm_get_host(host);
call = nlm_alloc_call(host);
if (call == NULL)
return NULL;
*/
__be32
nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
- struct nlm_lock *lock, int wait, struct nlm_cookie *cookie)
+ struct nlm_host *host, struct nlm_lock *lock, int wait,
+ struct nlm_cookie *cookie)
{
struct nlm_block *block = NULL;
- struct nlm_host *host;
int error;
__be32 ret;
(long long)lock->fl.fl_end,
wait);
- /* Create host handle for callback */
- host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len);
- if (host == NULL)
- return nlm_lck_denied_nolocks;
-
/* Lock file against concurrent access */
mutex_lock(&file->f_mutex);
/* Get existing block (in case client is busy-waiting)
*/
block = nlmsvc_lookup_block(file, lock);
if (block == NULL) {
- block = nlmsvc_create_block(rqstp, nlm_get_host(host), file,
- lock, cookie);
+ block = nlmsvc_create_block(rqstp, host, file, lock, cookie);
ret = nlm_lck_denied_nolocks;
if (block == NULL)
goto out;
lock->fl.fl_flags &= ~FL_SLEEP;
dprintk("lockd: vfs_lock_file returned %d\n", error);
- switch(error) {
+ switch (error) {
case 0:
ret = nlm_granted;
goto out;
out:
mutex_unlock(&file->f_mutex);
nlmsvc_release_block(block);
- nlm_release_host(host);
dprintk("lockd: nlmsvc_lock returned %u\n", ret);
return ret;
}
*/
__be32
nlmsvc_testlock(struct svc_rqst *rqstp, struct nlm_file *file,
- struct nlm_lock *lock, struct nlm_lock *conflock,
- struct nlm_cookie *cookie)
+ struct nlm_host *host, struct nlm_lock *lock,
+ struct nlm_lock *conflock, struct nlm_cookie *cookie)
{
struct nlm_block *block = NULL;
int error;
if (block == NULL) {
struct file_lock *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
- struct nlm_host *host;
if (conf == NULL)
return nlm_granted;
- /* Create host handle for callback */
- host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len);
- if (host == NULL) {
- kfree(conf);
- return nlm_lck_denied_nolocks;
- }
block = nlmsvc_create_block(rqstp, host, file, lock, cookie);
if (block == NULL) {
kfree(conf);
dprintk("lockd: GRANT_MSG RPC callback\n");
+ lock_kernel();
/* if the block is not on a list at this point then it has
* been invalidated. Don't try to requeue it.
*
* for nlm_blocked?
*/
if (list_empty(&block->b_list))
- return;
+ goto out;
/* Technically, we should down the file semaphore here. Since we
* move the block towards the head of the queue only, no harm
}
nlmsvc_insert_block(block, timeout);
svc_wake_up(block->b_daemon);
+out:
+ unlock_kernel();
}
static void nlmsvc_grant_release(void *data)
{
struct nlm_rqst *call = data;
+ lock_kernel();
nlmsvc_release_block(call->a_block);
+ unlock_kernel();
}
static const struct rpc_call_ops nlmsvc_grant_ops = {
if (block->b_when == NLM_NEVER)
break;
- if (time_after(block->b_when,jiffies)) {
+ if (time_after(block->b_when, jiffies)) {
timeout = block->b_when - jiffies;
break;
}
return 0;
no_locks:
- if (host)
- nlm_release_host(host);
+ nlm_release_host(host);
if (error)
return error;
return nlm_lck_denied_nolocks;
return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now check for conflicting locks */
- resp->status = cast_status(nlmsvc_testlock(rqstp, file, &argp->lock, &resp->lock, &resp->cookie));
+ resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
if (resp->status == nlm_drop_reply)
rc = rpc_drop_reply;
else
#endif
/* Now try to lock the file */
- resp->status = cast_status(nlmsvc_lock(rqstp, file, &argp->lock,
+ resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
argp->block, &argp->cookie));
if (resp->status == nlm_drop_reply)
rc = rpc_drop_reply;
static void nlmsvc_callback_release(void *data)
{
+ lock_kernel();
nlm_release_call(data);
+ unlock_kernel();
}
static const struct rpc_call_ops nlmsvc_callback_ops = {
#define READ_SYNC (READ | (1 << BIO_RW_SYNC))
#define READ_META (READ | (1 << BIO_RW_META))
#define WRITE_SYNC (WRITE | (1 << BIO_RW_SYNC))
+#define SWRITE_SYNC (SWRITE | (1 << BIO_RW_SYNC))
#define WRITE_BARRIER ((1 << BIO_RW) | (1 << BIO_RW_BARRIER))
#define SEL_IN 1
struct list_head fl_link; /* doubly linked list of all locks */
struct list_head fl_block; /* circular list of blocked processes */
fl_owner_t fl_owner;
+ unsigned char fl_flags;
+ unsigned char fl_type;
unsigned int fl_pid;
struct pid *fl_nspid;
wait_queue_head_t fl_wait;
struct file *fl_file;
- unsigned char fl_flags;
- unsigned char fl_type;
loff_t fl_start;
loff_t fl_end;
extern int invalidate_inode_pages2(struct address_space *mapping);
extern int invalidate_inode_pages2_range(struct address_space *mapping,
pgoff_t start, pgoff_t end);
+extern void generic_sync_sb_inodes(struct super_block *sb,
+ struct writeback_control *wbc);
extern int write_inode_now(struct inode *, int);
extern int filemap_fdatawrite(struct address_space *);
extern int filemap_flush(struct address_space *);
pgoff_t start, pgoff_t end);
extern int __filemap_fdatawrite_range(struct address_space *mapping,
loff_t start, loff_t end, int sync_mode);
+extern int filemap_fdatawrite_range(struct address_space *mapping,
+ loff_t start, loff_t end);
extern long do_fsync(struct file *file, int datasync);
extern void sync_supers(void);
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
-extern loff_t remote_llseek(struct file *file, loff_t offset, int origin);
+extern loff_t generic_file_llseek_unlocked(struct file *file, loff_t offset,
+ int origin);
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);