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NFS: Request a directory delegation during RENAME 

If we notice that we're renaming a file within a directory then we take
that as a sign that the user is working with the current directory and
may want a delegation to avoid extra revalidations when possible.

The nfs_request_directory_delegation() function exists within the NFS v4
module, so I add an extra flag to rename_setup() to indicate if a dentry
is being renamed within the same parent directory.

Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
master
Anna Schumaker 2025-11-04 10:06:43 -05:00 committed by Trond Myklebust
parent 156b094829
commit 2da2116707
5 changed files with 12 additions and 5 deletions
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3
fs/nfs/nfs3proc.c
View File

@ -483,7 +483,8 @@ nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
static void
nfs3_proc_rename_setup(struct rpc_message *msg,
struct dentry *old_dentry,
struct dentry *new_dentry)
struct dentry *new_dentry,
struct inode *same_parent)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
}

5
fs/nfs/nfs4proc.c
View File

@ -5060,7 +5060,8 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
static void nfs4_proc_rename_setup(struct rpc_message *msg,
struct dentry *old_dentry,
struct dentry *new_dentry)
struct dentry *new_dentry,
struct inode *same_parent)
{
struct nfs_renameargs *arg = msg->rpc_argp;
struct nfs_renameres *res = msg->rpc_resp;
@ -5071,6 +5072,8 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg,
nfs4_inode_make_writeable(old_inode);
if (new_inode)
nfs4_inode_return_delegation(new_inode);
if (same_parent)
nfs_request_directory_delegation(same_parent);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
res->server = NFS_SB(old_dentry->d_sb);
nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1, 0);

3
fs/nfs/proc.c
View File

@ -353,7 +353,8 @@ static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir)
static void
nfs_proc_rename_setup(struct rpc_message *msg,
struct dentry *old_dentry,
struct dentry *new_dentry)
struct dentry *new_dentry,
struct inode *same_parent)
{
msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME];
}

3
fs/nfs/unlink.c
View File

@ -390,7 +390,8 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
nfs_sb_active(old_dir->i_sb);
NFS_PROTO(data->old_dir)->rename_setup(&msg, old_dentry, new_dentry);
NFS_PROTO(data->old_dir)->rename_setup(&msg, old_dentry, new_dentry,
old_dir == new_dir ? old_dir : NULL);
return rpc_run_task(&task_setup_data);
}

3
include/linux/nfs_xdr.h
View File

@ -1808,7 +1808,8 @@ struct nfs_rpc_ops {
int (*unlink_done) (struct rpc_task *, struct inode *);
void (*rename_setup) (struct rpc_message *msg,
struct dentry *old_dentry,
struct dentry *new_dentry);
struct dentry *new_dentry,
struct inode *same_parent);
void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
int (*link) (struct inode *, struct inode *, const struct qstr *);