summaryrefslogtreecommitdiffstats
path: root/fs/nfs/nfs4xdr.c
diff options
context:
space:
mode:
authorTrond Myklebust <Trond.Myklebust@netapp.com>2008-04-07 13:20:54 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-04-19 16:53:15 -0400
commitc1d519312dcdf11532fed9f99a8ecc3547ffd9d6 (patch)
treef91e0d8df3fc424aaa6eddbc54aaf55bdbfb245b /fs/nfs/nfs4xdr.c
parent35d05778e25ee16dbddb60331be0bc1309efba19 (diff)
downloadop-kernel-dev-c1d519312dcdf11532fed9f99a8ecc3547ffd9d6.zip
op-kernel-dev-c1d519312dcdf11532fed9f99a8ecc3547ffd9d6.tar.gz
NFSv4: Only increment the sequence id if the server saw it
It is quite possible that the OPEN, CLOSE, LOCK, LOCKU,... compounds fail before the actual stateful operation has been executed (for instance in the PUTFH call). There is no way to tell from the overall status result which operations were executed from the COMPOUND. The fix is to move incrementing of the sequence id into the XDR layer, so that we do it as we process the results from the stateful operation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
-rw-r--r--fs/nfs/nfs4xdr.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 2b519f6..b8b2e39 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -3005,6 +3005,8 @@ static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
int status;
status = decode_op_hdr(xdr, OP_CLOSE);
+ if (status != -EIO)
+ nfs_increment_open_seqid(status, res->seqid);
if (status)
return status;
READ_BUF(NFS4_STATEID_SIZE);
@@ -3296,11 +3298,17 @@ static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
int status;
status = decode_op_hdr(xdr, OP_LOCK);
+ if (status == -EIO)
+ goto out;
if (status == 0) {
READ_BUF(NFS4_STATEID_SIZE);
COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
} else if (status == -NFS4ERR_DENIED)
- return decode_lock_denied(xdr, NULL);
+ status = decode_lock_denied(xdr, NULL);
+ if (res->open_seqid != NULL)
+ nfs_increment_open_seqid(status, res->open_seqid);
+ nfs_increment_lock_seqid(status, res->lock_seqid);
+out:
return status;
}
@@ -3319,6 +3327,8 @@ static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
int status;
status = decode_op_hdr(xdr, OP_LOCKU);
+ if (status != -EIO)
+ nfs_increment_lock_seqid(status, res->seqid);
if (status == 0) {
READ_BUF(NFS4_STATEID_SIZE);
COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
@@ -3384,6 +3394,8 @@ static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
int status;
status = decode_op_hdr(xdr, OP_OPEN);
+ if (status != -EIO)
+ nfs_increment_open_seqid(status, res->seqid);
if (status)
return status;
READ_BUF(NFS4_STATEID_SIZE);
@@ -3416,6 +3428,8 @@ static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmre
int status;
status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
+ if (status != -EIO)
+ nfs_increment_open_seqid(status, res->seqid);
if (status)
return status;
READ_BUF(NFS4_STATEID_SIZE);
@@ -3429,6 +3443,8 @@ static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *re
int status;
status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
+ if (status != -EIO)
+ nfs_increment_open_seqid(status, res->seqid);
if (status)
return status;
READ_BUF(NFS4_STATEID_SIZE);
OpenPOWER on IntegriCloud