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Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

Browse Source 
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Fix an Oops in the NFSv4 atomic open code
  NFS: Fix the selection of security flavours in Kconfig
  NFS: fix the return value of nfs_file_fsync()
  rpcrdma: Fix SQ size calculation when memreg is FRMR
  xprtrdma: Do not truncate iova_start values in frmr registrations.
  nfs: Remove redundant NULL check upon kfree()
  nfs: Add "lookupcache" to displayed mount options
  NFS: allow close-to-open cache semantics to apply to root of NFS filesystem
  SUNRPC: fix NFS client over TCP hangs due to packet loss (Bug 16494)
This commit is contained in:
Linus Torvalds 2010-08-18 15:45:23 -07:00
commit 763008c435
10 changed files with 68 additions and 24 deletions
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1
fs/nfs/Kconfig
View File

@ -63,7 +63,6 @@ config NFS_V3_ACL
config NFS_V4
bool "NFS client support for NFS version 4"
depends on NFS_FS
select RPCSEC_GSS_KRB5
help
This option enables support for version 4 of the NFS protocol
(RFC 3530) in the kernel's NFS client.

9
fs/nfs/dir.c
View File

@ -140,6 +140,13 @@ nfs_opendir(struct inode *inode, struct file *filp)
/* Call generic open code in order to cache credentials */
res = nfs_open(inode, filp);
if (filp->f_path.dentry == filp->f_path.mnt->mnt_root) {
/* This is a mountpoint, so d_revalidate will never
* have been called, so we need to refresh the
* inode (for close-open consistency) ourselves.
*/
__nfs_revalidate_inode(NFS_SERVER(inode), inode);
}
return res;
}
@ -1103,7 +1110,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
if ((openflags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL))
goto no_open_dput;
/* We can't create new files, or truncate existing ones here */
openflags &= ~(O_CREAT|O_TRUNC);
openflags &= ~(O_CREAT|O_EXCL|O_TRUNC);
/*
* Note: we're not holding inode->i_mutex and so may be racing with

2
fs/nfs/file.c
View File

@ -323,7 +323,7 @@ nfs_file_fsync(struct file *file, int datasync)
have_error |= test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);
if (have_error)
ret = xchg(&ctx->error, 0);
if (!ret)
if (!ret && status < 0)
ret = status;
return ret;
}

11
fs/nfs/nfs4proc.c
View File

@ -2036,7 +2036,8 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
int open_flags = nd->intent.open.flags;
fmode_t fmode = open_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@ -2044,8 +2045,9 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
if (!IS_POSIXACL(dir))
attr.ia_mode &= ~current_umask();
} else {
open_flags &= ~O_EXCL;
attr.ia_valid = 0;
BUG_ON(nd->intent.open.flags & O_CREAT);
BUG_ON(open_flags & O_CREAT);
}
cred = rpc_lookup_cred();
@ -2054,7 +2056,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
state = nfs4_do_open(dir, &path, fmode, open_flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@ -2273,8 +2275,7 @@ static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct
out:
if (page)
__free_page(page);
if (locations)
kfree(locations);
kfree(locations);
return status;
}

7
fs/nfs/super.c
View File

@ -655,6 +655,13 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
if (nfss->options & NFS_OPTION_FSCACHE)
seq_printf(m, ",fsc");
if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) {
if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONE)
seq_printf(m, ",lookupcache=none");
else
seq_printf(m, ",lookupcache=pos");
}
}
/*

1
fs/nfsd/Kconfig
View File

@ -69,7 +69,6 @@ config NFSD_V4
depends on NFSD && PROC_FS && EXPERIMENTAL
select NFSD_V3
select FS_POSIX_ACL
select RPCSEC_GSS_KRB5
help
This option enables support in your system's NFS server for
version 4 of the NFS protocol (RFC 3530).

9
net/sunrpc/Kconfig
View File

@ -18,10 +18,11 @@ config SUNRPC_XPRT_RDMA
If unsure, say N.
config RPCSEC_GSS_KRB5
tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
depends on SUNRPC && EXPERIMENTAL
tristate
depends on SUNRPC && CRYPTO
prompt "Secure RPC: Kerberos V mechanism" if !(NFS_V4 || NFSD_V4)
default y
select SUNRPC_GSS
select CRYPTO
select CRYPTO_MD5
select CRYPTO_DES
select CRYPTO_CBC
@ -34,7 +35,7 @@ config RPCSEC_GSS_KRB5
available from http://linux-nfs.org/. In addition, user-space
Kerberos support should be installed.
If unsure, say N.
If unsure, say Y.
config RPCSEC_GSS_SPKM3
tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"

2
net/sunrpc/xprtrdma/rpc_rdma.c
View File

@ -249,6 +249,8 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
req->rl_nchunks = nchunks;
BUG_ON(nchunks == 0);
BUG_ON((r_xprt->rx_ia.ri_memreg_strategy == RPCRDMA_FRMR)
&& (nchunks > 3));
/*
* finish off header. If write, marshal discrim and nchunks.

22
net/sunrpc/xprtrdma/verbs.c
View File

@ -650,10 +650,22 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
ep->rep_attr.cap.max_send_wr = cdata->max_requests;
switch (ia->ri_memreg_strategy) {
case RPCRDMA_FRMR:
/* Add room for frmr register and invalidate WRs */
ep->rep_attr.cap.max_send_wr *= 3;
if (ep->rep_attr.cap.max_send_wr > devattr.max_qp_wr)
return -EINVAL;
/* Add room for frmr register and invalidate WRs.
* 1. FRMR reg WR for head
* 2. FRMR invalidate WR for head
* 3. FRMR reg WR for pagelist
* 4. FRMR invalidate WR for pagelist
* 5. FRMR reg WR for tail
* 6. FRMR invalidate WR for tail
* 7. The RDMA_SEND WR
*/
ep->rep_attr.cap.max_send_wr *= 7;
if (ep->rep_attr.cap.max_send_wr > devattr.max_qp_wr) {
cdata->max_requests = devattr.max_qp_wr / 7;
if (!cdata->max_requests)
return -EINVAL;
ep->rep_attr.cap.max_send_wr = cdata->max_requests * 7;
}
break;
case RPCRDMA_MEMWINDOWS_ASYNC:
case RPCRDMA_MEMWINDOWS:
@ -1490,7 +1502,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg,
memset(&frmr_wr, 0, sizeof frmr_wr);
frmr_wr.opcode = IB_WR_FAST_REG_MR;
frmr_wr.send_flags = 0; /* unsignaled */
frmr_wr.wr.fast_reg.iova_start = (unsigned long)seg1->mr_dma;
frmr_wr.wr.fast_reg.iova_start = seg1->mr_dma;
frmr_wr.wr.fast_reg.page_list = seg1->mr_chunk.rl_mw->r.frmr.fr_pgl;
frmr_wr.wr.fast_reg.page_list_len = i;
frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT;

28
net/sunrpc/xprtsock.c
View File

@ -1305,10 +1305,11 @@ static void xs_tcp_state_change(struct sock *sk)
if (!(xprt = xprt_from_sock(sk)))
goto out;
dprintk("RPC: xs_tcp_state_change client %p...\n", xprt);
dprintk("RPC: state %x conn %d dead %d zapped %d\n",
dprintk("RPC: state %x conn %d dead %d zapped %d sk_shutdown %d\n",
sk->sk_state, xprt_connected(xprt),
sock_flag(sk, SOCK_DEAD),
sock_flag(sk, SOCK_ZAPPED));
sock_flag(sk, SOCK_ZAPPED),
sk->sk_shutdown);
switch (sk->sk_state) {
case TCP_ESTABLISHED:
@ -1779,10 +1780,25 @@ static void xs_tcp_reuse_connection(struct rpc_xprt *xprt, struct sock_xprt *tra
{
unsigned int state = transport->inet->sk_state;
if (state == TCP_CLOSE && transport->sock->state == SS_UNCONNECTED)
return;
if ((1 << state) & (TCPF_ESTABLISHED|TCPF_SYN_SENT))
return;
if (state == TCP_CLOSE && transport->sock->state == SS_UNCONNECTED) {
/* we don't need to abort the connection if the socket
* hasn't undergone a shutdown
*/
if (transport->inet->sk_shutdown == 0)
return;
dprintk("RPC: %s: TCP_CLOSEd and sk_shutdown set to %d\n",
__func__, transport->inet->sk_shutdown);
}
if ((1 << state) & (TCPF_ESTABLISHED|TCPF_SYN_SENT)) {
/* we don't need to abort the connection if the socket
* hasn't undergone a shutdown
*/
if (transport->inet->sk_shutdown == 0)
return;
dprintk("RPC: %s: ESTABLISHED/SYN_SENT "
"sk_shutdown set to %d\n",
__func__, transport->inet->sk_shutdown);
}
xs_abort_connection(xprt, transport);
}