提交 8a280510 编写于 作者: J J. Bruce Fields 提交者: Linus Torvalds

[PATCH] nfsd4: fix nfsd4_lock cleanup on failure

release_state_owner also puts the lock owner on the close_lru.  There's no
need for that, though; replays of the failed lock would be handled by the
openowner not the lockowner.

Also consolidate the cleanup a bit, fixing leaks that can happen if errors
occur between the time a new lock owner is allocated and the lock is done.

Remove a comment and dprintk that look a little redundant.
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: NNeil Brown <neilb@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 a6f6ef2f
......@@ -2744,10 +2744,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lock
if (lock_sop == NULL)
goto out;
lock_stp = alloc_init_lock_stateid(lock_sop, fp, open_stp);
if (lock_stp == NULL) {
release_stateowner(lock_sop);
if (lock_stp == NULL)
goto out;
}
} else {
/* lock (lock owner + lock stateid) already exists */
status = nfs4_preprocess_seqid_op(current_fh,
......@@ -2815,7 +2813,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lock
status = nfserr_deadlock;
default:
dprintk("NFSD: nfsd4_lock: posix_lock_file() failed! status %d\n",status);
goto out_destroy_new_stateid;
goto out;
}
conflicting_lock:
......@@ -2829,17 +2827,9 @@ nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lock
goto out;
}
nfs4_set_lock_denied(conflock, &lock->lk_denied);
out_destroy_new_stateid:
if (lock->lk_is_new) {
dprintk("NFSD: nfsd4_lock: destroy new stateid!\n");
/*
* An error encountered after instantiation of the new
* stateid has forced us to destroy it.
*/
release_state_owner(lock_stp, LOCK_STATE);
}
out:
if (status && lock->lk_is_new && lock_sop)
release_stateowner(lock_sop);
if (lock->lk_stateowner) {
nfs4_get_stateowner(lock->lk_stateowner);
*replay_owner = lock->lk_stateowner;
......
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