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NFSv4: Further minor cleanups for nfs4_atomic_open() 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2010-09-17 10:56:50 -04:00
parent cd9a1c0e5a
commit f46e0bd34e
3 changed files with 20 additions and 31 deletions
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21
fs/nfs/dir.c
View File

@ -1084,8 +1084,8 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
struct nfs_open_context *ctx;
struct iattr attr;
struct dentry *res = NULL;
struct inode *inode;
int open_flags;
int error;
dfprintk(VFS, "NFS: atomic_lookup(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
@ -1125,13 +1125,15 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
}
/* Open the file on the server */
res = nfs4_atomic_open(dir, ctx, open_flags, &attr);
if (IS_ERR(res)) {
nfs_block_sillyrename(dentry->d_parent);
inode = nfs4_atomic_open(dir, ctx, open_flags, &attr);
if (IS_ERR(inode)) {
nfs_unblock_sillyrename(dentry->d_parent);
put_nfs_open_context(ctx);
error = PTR_ERR(res);
switch (error) {
switch (PTR_ERR(inode)) {
/* Make a negative dentry */
case -ENOENT:
d_add(dentry, NULL);
res = NULL;
goto out;
/* This turned out not to be a regular file */
@ -1143,13 +1145,20 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
goto no_open;
/* case -EINVAL: */
default:
res = ERR_CAST(inode);
goto out;
}
}
if (res != NULL)
res = d_add_unique(dentry, inode);
if (res != NULL) {
dput(ctx->path.dentry);
ctx->path.dentry = dget(res);
dentry = res;
}
nfs_intent_set_file(nd, ctx);
nfs_unblock_sillyrename(dentry->d_parent);
out:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
return res;
no_open:
return nfs_lookup(dir, dentry, nd);

2
fs/nfs/nfs4_fs.h
View File

@ -242,7 +242,7 @@ extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait);
extern struct dentry *nfs4_atomic_open(struct inode *, struct nfs_open_context *, int, struct iattr *);
extern struct inode *nfs4_atomic_open(struct inode *, struct nfs_open_context *, int, struct iattr *);
extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,

28
fs/nfs/nfs4proc.c
View File

@ -2024,37 +2024,17 @@ out_close:
return ret;
}
struct dentry *
struct inode *
nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
{
struct dentry *dentry = ctx->path.dentry;
struct dentry *parent;
struct nfs4_state *state;
struct dentry *res;
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
d_add(dentry, NULL);
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
}
nfs_unblock_sillyrename(parent);
return (struct dentry *)state;
}
res = d_add_unique(dentry, igrab(state->inode));
if (res != NULL) {
struct dentry *dummy = ctx->path.dentry;
ctx->path.dentry = dget(res);
dput(dummy);
}
if (IS_ERR(state))
return ERR_CAST(state);
ctx->state = state;
nfs_set_verifier(ctx->path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
return res;
return igrab(state->inode);
}
int