NFSv4: Move dentry instantiation into the NFSv4-specific atomic open code
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index bf4e5f4..c662ff6 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1357,11 +1357,6 @@
{
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 @@
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 @@
}
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;
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 13e6bb3..e5b804d 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -69,7 +69,6 @@
goto out_drop;
}
}
- iput(inode);
if (inode != dentry->d_inode)
goto out_drop;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 70f378f..aaf2c13 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1964,6 +1964,7 @@
{
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 @@
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 @@
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 @@
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;