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NFSv4: Move dentry instantiation into the NFSv4-specific atomic open code 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-05-29 13:11:28 -04:00
parent 3efb972247
commit 275bb30786
3 changed files with 20 additions and 21 deletions
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19
fs/nfs/dir.c
View File

@ -1357,11 +1357,6 @@ static int nfs_finish_open(struct nfs_open_context *ctx,
{
int err;
if (ctx->dentry != dentry) {
dput(ctx->dentry);
ctx->dentry = dget(dentry);
}
err = finish_open(file, dentry, do_open, opened);
if (err)
goto out;
@ -1420,13 +1415,13 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
nfs_block_sillyrename(dentry->d_parent);
inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr);
d_drop(dentry);
nfs_unblock_sillyrename(dentry->d_parent);
if (IS_ERR(inode)) {
nfs_unblock_sillyrename(dentry->d_parent);
put_nfs_open_context(ctx);
err = PTR_ERR(inode);
switch (err) {
case -ENOENT:
d_drop(dentry);
d_add(dentry, NULL);
break;
case -EISDIR:
@ -1442,16 +1437,8 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
}
goto out;
}
res = d_add_unique(dentry, inode);
if (res != NULL)
dentry = res;
nfs_unblock_sillyrename(dentry->d_parent);
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
err = nfs_finish_open(ctx, dentry, file, open_flags, opened);
dput(res);
err = nfs_finish_open(ctx, ctx->dentry, file, open_flags, opened);
out:
return err;

1
fs/nfs/nfs4file.c
View File

@ -69,7 +69,6 @@ nfs4_file_open(struct inode *inode, struct file *filp)
goto out_drop;
}
}
iput(inode);
if (inode != dentry->d_inode)
goto out_drop;

21
fs/nfs/nfs4proc.c
View File

@ -1964,6 +1964,7 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
{
struct nfs4_state_owner *sp = opendata->owner;
struct nfs_server *server = sp->so_server;
struct dentry *dentry;
struct nfs4_state *state;
unsigned int seq;
int ret;
@ -1981,6 +1982,21 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
if (server->caps & NFS_CAP_POSIX_LOCK)
set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
dentry = opendata->dentry;
if (dentry->d_inode == NULL) {
/* FIXME: Is this d_drop() ever needed? */
d_drop(dentry);
dentry = d_add_unique(dentry, igrab(state->inode));
if (dentry == NULL) {
dentry = opendata->dentry;
} else if (dentry != ctx->dentry) {
dput(ctx->dentry);
ctx->dentry = dget(dentry);
}
nfs_set_verifier(dentry,
nfs_save_change_attribute(opendata->dir->d_inode));
}
ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
if (ret != 0)
goto out;
@ -2444,7 +2460,7 @@ nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags
state = nfs4_do_open(dir, ctx, open_flags, attr);
if (IS_ERR(state))
return ERR_CAST(state);
return igrab(state->inode);
return state->inode;
}
static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
@ -3050,13 +3066,10 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
sattr->ia_mode &= ~current_umask();
state = nfs4_do_open(dir, ctx, flags, sattr);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
goto out;
}
d_add(dentry, igrab(state->inode));
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out:
put_nfs_open_context(ctx);
return status;