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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-03-20 21:44:44 +0300 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-03-20 21:44:44 +0300 |
| commit | 3a649b884637c4fdff50a6beebc3dc0e6082e048 (patch) | |
| tree | 042455741f079fdbd4d33cd7da61c1c9e68db477 /fs/lockd/clntlock.c | |
| parent | d72b7a6b26b9009b7a05117fe2e04b3a73ae4a5c (diff) | |
| download | linux-3a649b884637c4fdff50a6beebc3dc0e6082e048.tar.xz | |
NLM: Simplify client locks
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/lockd/clntlock.c')
| -rw-r--r-- | fs/lockd/clntlock.c | 43 |
1 files changed, 16 insertions, 27 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index 7cf41c1e1a88..bce744468708 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -44,32 +44,25 @@ static LIST_HEAD(nlm_blocked); /* * Queue up a lock for blocking so that the GRANTED request can see it */ -int nlmclnt_prepare_block(struct nlm_rqst *req, struct nlm_host *host, struct file_lock *fl) +struct nlm_wait *nlmclnt_prepare_block(struct nlm_host *host, struct file_lock *fl) { struct nlm_wait *block; - BUG_ON(req->a_block != NULL); block = kmalloc(sizeof(*block), GFP_KERNEL); - if (block == NULL) - return -ENOMEM; - block->b_host = host; - block->b_lock = fl; - init_waitqueue_head(&block->b_wait); - block->b_status = NLM_LCK_BLOCKED; - - list_add(&block->b_list, &nlm_blocked); - req->a_block = block; - - return 0; + if (block != NULL) { + block->b_host = host; + block->b_lock = fl; + init_waitqueue_head(&block->b_wait); + block->b_status = NLM_LCK_BLOCKED; + list_add(&block->b_list, &nlm_blocked); + } + return block; } -void nlmclnt_finish_block(struct nlm_rqst *req) +void nlmclnt_finish_block(struct nlm_wait *block) { - struct nlm_wait *block = req->a_block; - if (block == NULL) return; - req->a_block = NULL; list_del(&block->b_list); kfree(block); } @@ -77,15 +70,14 @@ void nlmclnt_finish_block(struct nlm_rqst *req) /* * Block on a lock */ -long nlmclnt_block(struct nlm_rqst *req, long timeout) +int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout) { - struct nlm_wait *block = req->a_block; long ret; /* A borken server might ask us to block even if we didn't * request it. Just say no! */ - if (!req->a_args.block) + if (block == NULL) return -EAGAIN; /* Go to sleep waiting for GRANT callback. Some servers seem @@ -99,13 +91,10 @@ long nlmclnt_block(struct nlm_rqst *req, long timeout) ret = wait_event_interruptible_timeout(block->b_wait, block->b_status != NLM_LCK_BLOCKED, timeout); - - if (block->b_status != NLM_LCK_BLOCKED) { - req->a_res.status = block->b_status; - block->b_status = NLM_LCK_BLOCKED; - } - - return ret; + if (ret < 0) + return -ERESTARTSYS; + req->a_res.status = block->b_status; + return 0; } /* |