aboutsummaryrefslogtreecommitdiffstats
path: root/net
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-11 12:11:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-11 12:11:35 -0700
commit1466b77a7be75144dee1cb09839be3435854dd0b (patch)
tree977a0b6c1cd69ff98e5027359bb7de7b8897276a /net
parent19d2f8e0fb7bba99cc585d2467e9fa54a84c8557 (diff)
parenteeee245268c951262b861bc1be4e9dc812352499 (diff)
Merge tag 'nfs-for-3.11-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull second set of NFS client updates from Trond Myklebust: "This mainly contains some small readdir optimisations that had dependencies on Al Viro's readdir rewrite. There is also a fix for a nasty deadlock which surfaced earlier in this merge window. Highlights include: - Fix an_rpc pipefs regression that causes a deadlock on mount - Readdir optimisations by Scott Mayhew and Jeff Layton - clean up the rpc_pipefs dentry operation setup" * tag 'nfs-for-3.11-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Fix a deadlock in rpc_client_register() rpc_pipe: rpc_dir_inode_operations can be static NFS: Allow nfs_updatepage to extend a write under additional circumstances NFS: Make nfs_readdir revalidate less often NFS: Make nfs_attribute_cache_expired() non-static rpc_pipe: set dentry operations at d_alloc time nfs: set verifier on existing dentries in nfs_prime_dcache
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/clnt.c16
-rw-r--r--net/sunrpc/rpc_pipe.c25
2 files changed, 29 insertions, 12 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index f0339ae9bf37..aa401560777b 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -290,7 +290,7 @@ static int rpc_client_register(const struct rpc_create_args *args,
struct rpc_auth *auth;
struct net *net = rpc_net_ns(clnt);
struct super_block *pipefs_sb;
- int err = 0;
+ int err;
pipefs_sb = rpc_get_sb_net(net);
if (pipefs_sb) {
@@ -299,6 +299,10 @@ static int rpc_client_register(const struct rpc_create_args *args,
goto out;
}
+ rpc_register_client(clnt);
+ if (pipefs_sb)
+ rpc_put_sb_net(net);
+
auth = rpcauth_create(args->authflavor, clnt);
if (IS_ERR(auth)) {
dprintk("RPC: Couldn't create auth handle (flavor %u)\n",
@@ -306,16 +310,14 @@ static int rpc_client_register(const struct rpc_create_args *args,
err = PTR_ERR(auth);
goto err_auth;
}
-
- rpc_register_client(clnt);
+ return 0;
+err_auth:
+ pipefs_sb = rpc_get_sb_net(net);
+ __rpc_clnt_remove_pipedir(clnt);
out:
if (pipefs_sb)
rpc_put_sb_net(net);
return err;
-
-err_auth:
- __rpc_clnt_remove_pipedir(clnt);
- goto out;
}
static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt)
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 4679df5a6d50..61239a2cb786 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -480,6 +480,23 @@ static const struct dentry_operations rpc_dentry_operations = {
.d_delete = rpc_delete_dentry,
};
+/*
+ * Lookup the data. This is trivial - if the dentry didn't already
+ * exist, we know it is negative.
+ */
+static struct dentry *
+rpc_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
+{
+ if (dentry->d_name.len > NAME_MAX)
+ return ERR_PTR(-ENAMETOOLONG);
+ d_add(dentry, NULL);
+ return NULL;
+}
+
+static const struct inode_operations rpc_dir_inode_operations = {
+ .lookup = rpc_lookup,
+};
+
static struct inode *
rpc_get_inode(struct super_block *sb, umode_t mode)
{
@@ -492,7 +509,7 @@ rpc_get_inode(struct super_block *sb, umode_t mode)
switch (mode & S_IFMT) {
case S_IFDIR:
inode->i_fop = &simple_dir_operations;
- inode->i_op = &simple_dir_inode_operations;
+ inode->i_op = &rpc_dir_inode_operations;
inc_nlink(inode);
default:
break;
@@ -666,11 +683,8 @@ static struct dentry *__rpc_lookup_create_exclusive(struct dentry *parent,
if (!dentry)
return ERR_PTR(-ENOMEM);
}
- if (dentry->d_inode == NULL) {
- if (!dentry->d_op)
- d_set_d_op(dentry, &rpc_dentry_operations);
+ if (dentry->d_inode == NULL)
return dentry;
- }
dput(dentry);
return ERR_PTR(-EEXIST);
}
@@ -1117,6 +1131,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = RPCAUTH_GSSMAGIC;
sb->s_op = &s_ops;
+ sb->s_d_op = &rpc_dentry_operations;
sb->s_time_gran = 1;
inode = rpc_get_inode(sb, S_IFDIR | S_IRUGO | S_IXUGO);

Privacy Policy