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eb872f0c
编写于
4月 16, 2010
作者:
T
Trond Myklebust
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
NFS: Reduce the stack footprint of nfs_proc_create
Signed-off-by:
N
Trond Myklebust
<
Trond.Myklebust@netapp.com
>
上级
39967ddf
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
66 addition
and
52 deletion
+66
-52
fs/nfs/proc.c
fs/nfs/proc.c
+66
-52
未找到文件。
fs/nfs/proc.c
浏览文件 @
eb872f0c
...
...
@@ -224,35 +224,60 @@ static int nfs_proc_readlink(struct inode *inode, struct page *page,
return
status
;
}
struct
nfs_createdata
{
struct
nfs_createargs
arg
;
struct
nfs_diropok
res
;
struct
nfs_fh
fhandle
;
struct
nfs_fattr
fattr
;
};
static
struct
nfs_createdata
*
nfs_alloc_createdata
(
struct
inode
*
dir
,
struct
dentry
*
dentry
,
struct
iattr
*
sattr
)
{
struct
nfs_createdata
*
data
;
data
=
kmalloc
(
sizeof
(
*
data
),
GFP_KERNEL
);
if
(
data
!=
NULL
)
{
data
->
arg
.
fh
=
NFS_FH
(
dir
);
data
->
arg
.
name
=
dentry
->
d_name
.
name
;
data
->
arg
.
len
=
dentry
->
d_name
.
len
;
data
->
arg
.
sattr
=
sattr
;
nfs_fattr_init
(
&
data
->
fattr
);
data
->
fhandle
.
size
=
0
;
data
->
res
.
fh
=
&
data
->
fhandle
;
data
->
res
.
fattr
=
&
data
->
fattr
;
}
return
data
;
};
static
void
nfs_free_createdata
(
const
struct
nfs_createdata
*
data
)
{
kfree
(
data
);
}
static
int
nfs_proc_create
(
struct
inode
*
dir
,
struct
dentry
*
dentry
,
struct
iattr
*
sattr
,
int
flags
,
struct
nameidata
*
nd
)
{
struct
nfs_fh
fhandle
;
struct
nfs_fattr
fattr
;
struct
nfs_createargs
arg
=
{
.
fh
=
NFS_FH
(
dir
),
.
name
=
dentry
->
d_name
.
name
,
.
len
=
dentry
->
d_name
.
len
,
.
sattr
=
sattr
};
struct
nfs_diropok
res
=
{
.
fh
=
&
fhandle
,
.
fattr
=
&
fattr
};
struct
nfs_createdata
*
data
;
struct
rpc_message
msg
=
{
.
rpc_proc
=
&
nfs_procedures
[
NFSPROC_CREATE
],
.
rpc_argp
=
&
arg
,
.
rpc_resp
=
&
res
,
};
int
status
;
int
status
=
-
ENOMEM
;
nfs_fattr_init
(
&
fattr
);
dprintk
(
"NFS call create %s
\n
"
,
dentry
->
d_name
.
name
);
data
=
nfs_alloc_createdata
(
dir
,
dentry
,
sattr
);
if
(
data
==
NULL
)
goto
out
;
msg
.
rpc_argp
=
&
data
->
arg
;
msg
.
rpc_resp
=
&
data
->
res
;
status
=
rpc_call_sync
(
NFS_CLIENT
(
dir
),
&
msg
,
0
);
nfs_mark_for_revalidate
(
dir
);
if
(
status
==
0
)
status
=
nfs_instantiate
(
dentry
,
&
fhandle
,
&
fattr
);
status
=
nfs_instantiate
(
dentry
,
data
->
res
.
fh
,
data
->
res
.
fattr
);
nfs_free_createdata
(
data
);
out:
dprintk
(
"NFS reply create: %d
\n
"
,
status
);
return
status
;
}
...
...
@@ -264,24 +289,12 @@ static int
nfs_proc_mknod
(
struct
inode
*
dir
,
struct
dentry
*
dentry
,
struct
iattr
*
sattr
,
dev_t
rdev
)
{
struct
nfs_fh
fhandle
;
struct
nfs_fattr
fattr
;
struct
nfs_createargs
arg
=
{
.
fh
=
NFS_FH
(
dir
),
.
name
=
dentry
->
d_name
.
name
,
.
len
=
dentry
->
d_name
.
len
,
.
sattr
=
sattr
};
struct
nfs_diropok
res
=
{
.
fh
=
&
fhandle
,
.
fattr
=
&
fattr
};
struct
nfs_createdata
*
data
;
struct
rpc_message
msg
=
{
.
rpc_proc
=
&
nfs_procedures
[
NFSPROC_CREATE
],
.
rpc_argp
=
&
arg
,
.
rpc_resp
=
&
res
,
};
int
status
,
mode
;
umode_t
mode
;
int
status
=
-
ENOMEM
;
dprintk
(
"NFS call mknod %s
\n
"
,
dentry
->
d_name
.
name
);
...
...
@@ -294,17 +307,24 @@ nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
sattr
->
ia_size
=
new_encode_dev
(
rdev
);
/* get out your barf bag */
}
nfs_fattr_init
(
&
fattr
);
data
=
nfs_alloc_createdata
(
dir
,
dentry
,
sattr
);
if
(
data
==
NULL
)
goto
out
;
msg
.
rpc_argp
=
&
data
->
arg
;
msg
.
rpc_resp
=
&
data
->
res
;
status
=
rpc_call_sync
(
NFS_CLIENT
(
dir
),
&
msg
,
0
);
nfs_mark_for_revalidate
(
dir
);
if
(
status
==
-
EINVAL
&&
S_ISFIFO
(
mode
))
{
sattr
->
ia_mode
=
mode
;
nfs_fattr_init
(
&
fattr
);
nfs_fattr_init
(
data
->
res
.
fattr
);
status
=
rpc_call_sync
(
NFS_CLIENT
(
dir
),
&
msg
,
0
);
}
if
(
status
==
0
)
status
=
nfs_instantiate
(
dentry
,
&
fhandle
,
&
fattr
);
status
=
nfs_instantiate
(
dentry
,
data
->
res
.
fh
,
data
->
res
.
fattr
);
nfs_free_createdata
(
data
);
out:
dprintk
(
"NFS reply mknod: %d
\n
"
,
status
);
return
status
;
}
...
...
@@ -440,31 +460,25 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
static
int
nfs_proc_mkdir
(
struct
inode
*
dir
,
struct
dentry
*
dentry
,
struct
iattr
*
sattr
)
{
struct
nfs_fh
fhandle
;
struct
nfs_fattr
fattr
;
struct
nfs_createargs
arg
=
{
.
fh
=
NFS_FH
(
dir
),
.
name
=
dentry
->
d_name
.
name
,
.
len
=
dentry
->
d_name
.
len
,
.
sattr
=
sattr
};
struct
nfs_diropok
res
=
{
.
fh
=
&
fhandle
,
.
fattr
=
&
fattr
};
struct
nfs_createdata
*
data
;
struct
rpc_message
msg
=
{
.
rpc_proc
=
&
nfs_procedures
[
NFSPROC_MKDIR
],
.
rpc_argp
=
&
arg
,
.
rpc_resp
=
&
res
,
};
int
status
;
int
status
=
-
ENOMEM
;
dprintk
(
"NFS call mkdir %s
\n
"
,
dentry
->
d_name
.
name
);
nfs_fattr_init
(
&
fattr
);
data
=
nfs_alloc_createdata
(
dir
,
dentry
,
sattr
);
if
(
data
==
NULL
)
goto
out
;
msg
.
rpc_argp
=
&
data
->
arg
;
msg
.
rpc_resp
=
&
data
->
res
;
status
=
rpc_call_sync
(
NFS_CLIENT
(
dir
),
&
msg
,
0
);
nfs_mark_for_revalidate
(
dir
);
if
(
status
==
0
)
status
=
nfs_instantiate
(
dentry
,
&
fhandle
,
&
fattr
);
status
=
nfs_instantiate
(
dentry
,
data
->
res
.
fh
,
data
->
res
.
fattr
);
nfs_free_createdata
(
data
);
out:
dprintk
(
"NFS reply mkdir: %d
\n
"
,
status
);
return
status
;
}
...
...
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