diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-02-14 13:53:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-14 16:09:34 -0800 |
| commit | 5ac5f9d1ce8492163dbde5d357dc5d03becf7e36 (patch) | |
| tree | 3ce7f36c074e37dd565b91490582c4a4902f2b18 /fs/lockd/svc4proc.c | |
| parent | 7c8903f6373f9abecf060bad53ca36bc4ac037f2 (diff) | |
| download | linux-5ac5f9d1ce8492163dbde5d357dc5d03becf7e36.tar.gz | |
[PATCH] NLM: Fix the NLM_GRANTED callback checks
If 2 threads attached to the same process are blocking on different locks on different files (maybe even on different servers) but have the same lock arguments (i.e. same offset+length - actually quite common, since most processes try to lock the entire file) then the first GRANTED call that wakes one up will also wake the other. Currently when the NLM_GRANTED callback comes in, lockd walks the list of blocked locks in search of a match to the lock that the NLM server has granted. Although it checks the lock pid, start and end, it fails to check the filehandle and the server address. By checking the filehandle and server IP address, we ensure that this only happens if the locks truly are referencing the same file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/lockd/svc4proc.c')
| -rw-r--r-- | fs/lockd/svc4proc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c index 4063095d849e..b10f913aa06a 100644 --- a/fs/lockd/svc4proc.c +++ b/fs/lockd/svc4proc.c @@ -228,7 +228,7 @@ nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp, resp->cookie = argp->cookie; dprintk("lockd: GRANTED called\n"); - resp->status = nlmclnt_grant(&argp->lock); + resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock); dprintk("lockd: GRANTED status %d\n", ntohl(resp->status)); return rpc_success; } |