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Message-ID: <20250206054504.2950516-19-neilb@suse.de>
Date: Thu, 6 Feb 2025 16:42:55 +1100
From: NeilBrown <neilb@...e.de>
To: Alexander Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>,
Jan Kara <jack@...e.cz>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Jeff Layton <jlayton@...nel.org>,
Dave Chinner <david@...morbit.com>
Cc: linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 18/19] nfs: change mkdir inode_operation to mkdir_async
mkdir_async allows a different dentry to be returned which is sometimes
relevant for nfs.
This patch changes the nfs_rpc_ops mkdir op to return a dentry, and
passes that back to the caller using mkdir_async.
Signed-off-by: NeilBrown <neilb@...e.de>
---
fs/nfs/dir.c | 17 ++++++++--------
fs/nfs/internal.h | 4 ++--
fs/nfs/nfs3proc.c | 9 +++++----
fs/nfs/nfs4proc.c | 45 +++++++++++++++++++++++++++++------------
fs/nfs/proc.c | 14 ++++++++-----
include/linux/nfs_xdr.h | 2 +-
6 files changed, 58 insertions(+), 33 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 8cbe63f4089a..2c69ec77d02c 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2420,11 +2420,12 @@ EXPORT_SYMBOL_GPL(nfs_mknod);
/*
* See comments for nfs_proc_create regarding failed operations.
*/
-int nfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry, umode_t mode)
+struct dentry *nfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
+ struct dentry *dentry, umode_t mode,
+ struct dirop_ret *dret)
{
struct iattr attr;
- int error;
+ struct dentry *ret;
dfprintk(VFS, "NFS: mkdir(%s/%lu), %pd\n",
dir->i_sb->s_id, dir->i_ino, dentry);
@@ -2433,14 +2434,14 @@ int nfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
attr.ia_mode = mode | S_IFDIR;
trace_nfs_mkdir_enter(dir, dentry);
- error = NFS_PROTO(dir)->mkdir(dir, dentry, &attr);
- trace_nfs_mkdir_exit(dir, dentry, error);
- if (error != 0)
+ ret = NFS_PROTO(dir)->mkdir(dir, dentry, &attr);
+ trace_nfs_mkdir_exit(dir, dentry, PTR_ERR_OR_ZERO(ret));
+ if (IS_ERR(ret))
goto out_err;
- return 0;
+ return ret;
out_err:
d_drop(dentry);
- return error;
+ return ret;
}
EXPORT_SYMBOL_GPL(nfs_mkdir);
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index fae2c7ae4acc..f7dea7fe5ebc 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -400,8 +400,8 @@ struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int);
void nfs_d_prune_case_insensitive_aliases(struct inode *inode);
int nfs_create(struct mnt_idmap *, struct inode *, struct dentry *,
umode_t, bool);
-int nfs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *,
- umode_t);
+struct dentry *nfs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *,
+ umode_t, struct dirop_ret *);
int nfs_rmdir(struct inode *, struct dentry *);
int nfs_unlink(struct inode *, struct dentry *);
int nfs_symlink(struct mnt_idmap *, struct inode *, struct dentry *,
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 0c3bc98cd999..41797cbbb8dc 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -578,7 +578,7 @@ nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct folio *folio,
return status;
}
-static int
+static struct dentry *
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct posix_acl *default_acl, *acl;
@@ -613,14 +613,15 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
- dput(d_alias);
out_release_acls:
posix_acl_release(acl);
posix_acl_release(default_acl);
out:
nfs3_free_createdata(data);
dprintk("NFS reply mkdir: %d\n", status);
- return status;
+ if (status)
+ return ERR_PTR(status);
+ return d_alias;
}
static int
@@ -1037,7 +1038,7 @@ static const struct inode_operations nfs3_dir_inode_operations = {
.link = nfs_link,
.unlink = nfs_unlink,
.symlink = nfs_symlink,
- .mkdir = nfs_mkdir,
+ .mkdir_async = nfs_mkdir,
.rmdir = nfs_rmdir,
.mknod = nfs_mknod,
.rename = nfs_rename,
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index df9669d4ded7..ef219968ed22 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5135,9 +5135,6 @@ static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_
&data->arg.seq_args, &data->res.seq_res, 1);
if (status == 0) {
spin_lock(&dir->i_lock);
- /* Creating a directory bumps nlink in the parent */
- if (data->arg.ftype == NF4DIR)
- nfs4_inc_nlink_locked(dir);
nfs4_update_changeattr_locked(dir, &data->res.dir_cinfo,
data->res.fattr->time_start,
NFS_INO_INVALID_DATA);
@@ -5147,6 +5144,25 @@ static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_
return status;
}
+static struct dentry *nfs4_do_mkdir(struct inode *dir, struct dentry *dentry,
+ struct nfs4_createdata *data)
+{
+ int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
+ &data->arg.seq_args, &data->res.seq_res, 1);
+
+ if (status)
+ return ERR_PTR(status);
+
+ spin_lock(&dir->i_lock);
+ /* Creating a directory bumps nlink in the parent */
+ nfs4_inc_nlink_locked(dir);
+ nfs4_update_changeattr_locked(dir, &data->res.dir_cinfo,
+ data->res.fattr->time_start,
+ NFS_INO_INVALID_DATA);
+ spin_unlock(&dir->i_lock);
+ return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr);
+}
+
static void nfs4_free_createdata(struct nfs4_createdata *data)
{
nfs4_label_free(data->fattr.label);
@@ -5203,32 +5219,34 @@ static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
return err;
}
-static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
- struct iattr *sattr, struct nfs4_label *label)
+static struct dentry *_nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
+ struct iattr *sattr,
+ struct nfs4_label *label)
{
struct nfs4_createdata *data;
- int status = -ENOMEM;
+ struct dentry *ret = ERR_PTR(-ENOMEM);
data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
if (data == NULL)
goto out;
data->arg.label = label;
- status = nfs4_do_create(dir, dentry, data);
+ ret = nfs4_do_mkdir(dir, dentry, data);
nfs4_free_createdata(data);
out:
- return status;
+ return ret;
}
-static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
- struct iattr *sattr)
+static struct dentry *nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
+ struct iattr *sattr)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_exception exception = {
.interruptible = true,
};
struct nfs4_label l, *label;
+ struct dentry *alias;
int err;
label = nfs4_label_init_security(dir, dentry, sattr, &l);
@@ -5236,14 +5254,15 @@ static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
sattr->ia_mode &= ~current_umask();
do {
- err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
+ alias = _nfs4_proc_mkdir(dir, dentry, sattr, label);
+ err = PTR_ERR_OR_ZERO(alias);
trace_nfs4_mkdir(dir, &dentry->d_name, err);
err = nfs4_handle_exception(NFS_SERVER(dir), err,
&exception);
} while (exception.retry);
nfs4_label_release_security(label);
- return err;
+ return alias;
}
static int _nfs4_proc_readdir(struct nfs_readdir_arg *nr_arg,
@@ -10865,7 +10884,7 @@ static const struct inode_operations nfs4_dir_inode_operations = {
.link = nfs_link,
.unlink = nfs_unlink,
.symlink = nfs_symlink,
- .mkdir = nfs_mkdir,
+ .mkdir_async = nfs_mkdir,
.rmdir = nfs_rmdir,
.mknod = nfs_mknod,
.rename = nfs_rename,
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 77920a2e3cef..7e8f6d8f02b4 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -446,13 +446,14 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct folio *folio,
return status;
}
-static int
+static struct dentry *
nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_MKDIR],
};
+ struct dentry *alias = NULL;
int status = -ENOMEM;
dprintk("NFS call mkdir %pd\n", dentry);
@@ -464,12 +465,15 @@ nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
- if (status == 0)
- status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+ if (status == 0) {
+ alias = nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr);
+ status = PTR_ERR_OR_ZERO(alias);
+ } else
+ alias = ERR_PTR(status);
nfs_free_createdata(data);
out:
dprintk("NFS reply mkdir: %d\n", status);
- return status;
+ return alias;
}
static int
@@ -706,7 +710,7 @@ static const struct inode_operations nfs_dir_inode_operations = {
.link = nfs_link,
.unlink = nfs_unlink,
.symlink = nfs_symlink,
- .mkdir = nfs_mkdir,
+ .mkdir_async = nfs_mkdir,
.rmdir = nfs_rmdir,
.mknod = nfs_mknod,
.rename = nfs_rename,
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index d0473e0d4aba..33d7f4c8183e 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1801,7 +1801,7 @@ struct nfs_rpc_ops {
int (*link) (struct inode *, struct inode *, const struct qstr *);
int (*symlink) (struct inode *, struct dentry *, struct folio *,
unsigned int, struct iattr *);
- int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
+ struct dentry *(*mkdir) (struct inode *, struct dentry *, struct iattr *);
int (*rmdir) (struct inode *, const struct qstr *);
int (*readdir) (struct nfs_readdir_arg *, struct nfs_readdir_res *);
int (*mknod) (struct inode *, struct dentry *, struct iattr *,
--
2.47.1
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