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Subject[PATCH v3 076/110] don't pass nameidata to ->follow_link()
Date
From: Al Viro <viro@zeniv.linux.org.uk>

its only use is getting passed to nd_jump_link(), which can obtain
it from current->nameidata

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
Documentation/filesystems/Locking | 2 +-
Documentation/filesystems/vfs.txt | 2 +-
drivers/staging/lustre/lustre/llite/symlink.c | 2 +-
fs/9p/vfs_inode.c | 2 +-
fs/9p/vfs_inode_dotl.c | 2 +-
fs/autofs4/symlink.c | 2 +-
fs/befs/linuxvfs.c | 4 ++--
fs/cifs/cifsfs.h | 2 +-
fs/cifs/link.c | 2 +-
fs/configfs/symlink.c | 2 +-
fs/ecryptfs/inode.c | 2 +-
fs/ext4/symlink.c | 2 +-
fs/f2fs/namei.c | 4 ++--
fs/fuse/dir.c | 2 +-
fs/gfs2/inode.c | 2 +-
fs/hostfs/hostfs_kern.c | 2 +-
fs/hppfs/hppfs.c | 4 ++--
fs/kernfs/symlink.c | 2 +-
fs/libfs.c | 2 +-
fs/namei.c | 11 ++++++-----
fs/nfs/symlink.c | 2 +-
fs/overlayfs/inode.c | 4 ++--
fs/proc/base.c | 4 ++--
fs/proc/inode.c | 2 +-
fs/proc/namespaces.c | 4 ++--
fs/proc/self.c | 2 +-
fs/proc/thread_self.c | 2 +-
fs/xfs/xfs_iops.c | 3 +--
include/linux/fs.h | 6 +++---
include/linux/namei.h | 2 +-
mm/shmem.c | 2 +-
31 files changed, 44 insertions(+), 44 deletions(-)

diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 7fa6c4a..5b5b4f5 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -50,7 +50,7 @@ prototypes:
int (*rename2) (struct inode *, struct dentry *,
struct inode *, struct dentry *, unsigned int);
int (*readlink) (struct dentry *, char __user *,int);
- const char *(*follow_link) (struct dentry *, void **, struct nameidata *);
+ const char *(*follow_link) (struct dentry *, void **);
void (*put_link) (struct dentry *, void *);
void (*truncate) (struct inode *);
int (*permission) (struct inode *, int, unsigned int);
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 1c6b03a..0dec8c8 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -350,7 +350,7 @@ struct inode_operations {
int (*rename2) (struct inode *, struct dentry *,
struct inode *, struct dentry *, unsigned int);
int (*readlink) (struct dentry *, char __user *,int);
- const char *(*follow_link) (struct dentry *, void **, struct nameidata *);
+ const char *(*follow_link) (struct dentry *, void **);
void (*put_link) (struct dentry *, void *);
int (*permission) (struct inode *, int);
int (*get_acl)(struct inode *, int);
diff --git a/drivers/staging/lustre/lustre/llite/symlink.c b/drivers/staging/lustre/lustre/llite/symlink.c
index da6d9d1..f3be3bf 100644
--- a/drivers/staging/lustre/lustre/llite/symlink.c
+++ b/drivers/staging/lustre/lustre/llite/symlink.c
@@ -118,7 +118,7 @@ failed:
return rc;
}

-static const char *ll_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *ll_follow_link(struct dentry *dentry, void **cookie)
{
struct inode *inode = d_inode(dentry);
struct ptlrpc_request *request = NULL;
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 7cc70a3..271f51a 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1230,7 +1230,7 @@ ino_t v9fs_qid2ino(struct p9_qid *qid)
*
*/

-static const char *v9fs_vfs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *v9fs_vfs_follow_link(struct dentry *dentry, void **cookie)
{
struct v9fs_session_info *v9ses = v9fs_dentry2v9ses(dentry);
struct p9_fid *fid = v9fs_fid_lookup(dentry);
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index ae062ff..16658ed 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -910,7 +910,7 @@ error:
*/

static const char *
-v9fs_vfs_follow_link_dotl(struct dentry *dentry, void **cookie, struct nameidata *nd)
+v9fs_vfs_follow_link_dotl(struct dentry *dentry, void **cookie)
{
struct p9_fid *fid = v9fs_fid_lookup(dentry);
char *target;
diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c
index 9c6a077..da0c334 100644
--- a/fs/autofs4/symlink.c
+++ b/fs/autofs4/symlink.c
@@ -12,7 +12,7 @@

#include "autofs_i.h"

-static const char *autofs4_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *autofs4_follow_link(struct dentry *dentry, void **cookie)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 3a1aefb..46aedac 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -42,7 +42,7 @@ static struct inode *befs_iget(struct super_block *, unsigned long);
static struct inode *befs_alloc_inode(struct super_block *sb);
static void befs_destroy_inode(struct inode *inode);
static void befs_destroy_inodecache(void);
-static const char *befs_follow_link(struct dentry *, void **, struct nameidata *nd);
+static const char *befs_follow_link(struct dentry *, void **);
static int befs_utf2nls(struct super_block *sb, const char *in, int in_len,
char **out, int *out_len);
static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
@@ -464,7 +464,7 @@ befs_destroy_inodecache(void)
* flag is set.
*/
static const char *
-befs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+befs_follow_link(struct dentry *dentry, void **cookie)
{
struct super_block *sb = dentry->d_sb;
struct befs_inode_info *befs_ino = BEFS_I(d_inode(dentry));
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 61012da..a782b22 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -120,7 +120,7 @@ extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
#endif

/* Functions related to symlinks */
-extern const char *cifs_follow_link(struct dentry *direntry, void **cookie, struct nameidata *nd);
+extern const char *cifs_follow_link(struct dentry *direntry, void **cookie);
extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
int buflen);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 4a439c2..546f86a 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -627,7 +627,7 @@ cifs_hl_exit:
}

const char *
-cifs_follow_link(struct dentry *direntry, void **cookie, struct nameidata *nd)
+cifs_follow_link(struct dentry *direntry, void **cookie)
{
struct inode *inode = d_inode(direntry);
int rc = -ENOMEM;
diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c
index fac8e85..0ace756 100644
--- a/fs/configfs/symlink.c
+++ b/fs/configfs/symlink.c
@@ -279,7 +279,7 @@ static int configfs_getlink(struct dentry *dentry, char * path)

}

-static const char *configfs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *configfs_follow_link(struct dentry *dentry, void **cookie)
{
unsigned long page = get_zeroed_page(GFP_KERNEL);
int error;
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index cdb9d6c..73d20ae 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -675,7 +675,7 @@ out:
return rc ? ERR_PTR(rc) : buf;
}

-static const char *ecryptfs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *ecryptfs_follow_link(struct dentry *dentry, void **cookie)
{
size_t len;
char *buf = ecryptfs_readlink_lower(dentry, &len);
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index afec475..ba5bd18 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -23,7 +23,7 @@
#include "xattr.h"

#ifdef CONFIG_EXT4_FS_ENCRYPTION
-static const char *ext4_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *ext4_follow_link(struct dentry *dentry, void **cookie)
{
struct page *cpage = NULL;
char *caddr, *paddr = NULL;
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index d294793..cd05a7c 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -296,9 +296,9 @@ fail:
return err;
}

-static const char *f2fs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *f2fs_follow_link(struct dentry *dentry, void **cookie)
{
- const char *link = page_follow_link_light(dentry, cookie, nd);
+ const char *link = page_follow_link_light(dentry, cookie);
if (!IS_ERR(link) && !*link) {
/* this is broken symlink case */
page_put_link(dentry, *cookie);
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index f9cb260..d5cdef8 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1365,7 +1365,7 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx)
return err;
}

-static const char *fuse_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *fuse_follow_link(struct dentry *dentry, void **cookie)
{
struct inode *inode = d_inode(dentry);
struct fuse_conn *fc = get_fuse_conn(inode);
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index f59390a..3a1461d 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1548,7 +1548,7 @@ out:
* Returns: 0 on success or error code
*/

-static const char *gfs2_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *gfs2_follow_link(struct dentry *dentry, void **cookie)
{
struct gfs2_inode *ip = GFS2_I(d_inode(dentry));
struct gfs2_holder i_gh;
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index f650ed6..7b6ed7a 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -892,7 +892,7 @@ static const struct inode_operations hostfs_dir_iops = {
.setattr = hostfs_setattr,
};

-static const char *hostfs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *hostfs_follow_link(struct dentry *dentry, void **cookie)
{
char *link = __getname();
if (link) {
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index b8f24d3..15a774e 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -642,11 +642,11 @@ static int hppfs_readlink(struct dentry *dentry, char __user *buffer,
buflen);
}

-static const char *hppfs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *hppfs_follow_link(struct dentry *dentry, void **cookie)
{
struct dentry *proc_dentry = HPPFS_I(d_inode(dentry))->proc_dentry;

- return d_inode(proc_dentry)->i_op->follow_link(proc_dentry, cookie, nd);
+ return d_inode(proc_dentry)->i_op->follow_link(proc_dentry, cookie);
}

static void hppfs_put_link(struct dentry *dentry, void *cookie)
diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index 3c7e799..366c5a1 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -112,7 +112,7 @@ static int kernfs_getlink(struct dentry *dentry, char *path)
return error;
}

-static const char *kernfs_iop_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *kernfs_iop_follow_link(struct dentry *dentry, void **cookie)
{
int error = -ENOMEM;
unsigned long page = get_zeroed_page(GFP_KERNEL);
diff --git a/fs/libfs.c b/fs/libfs.c
index 0c83fde..c5f3373 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -1091,7 +1091,7 @@ simple_nosetlease(struct file *filp, long arg, struct file_lock **flp,
}
EXPORT_SYMBOL(simple_nosetlease);

-const char *simple_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+const char *simple_follow_link(struct dentry *dentry, void **cookie)
{
return d_inode(dentry)->i_link;
}
diff --git a/fs/namei.c b/fs/namei.c
index b57400c..f311f03 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -753,8 +753,9 @@ static inline void path_to_nameidata(const struct path *path,
* Helper to directly jump to a known parsed path from ->follow_link,
* caller must have taken a reference to path beforehand.
*/
-void nd_jump_link(struct nameidata *nd, struct path *path)
+void nd_jump_link(struct path *path)
{
+ struct nameidata *nd = current->nameidata;
path_put(&nd->path);

nd->path = *path;
@@ -916,7 +917,7 @@ const char *get_link(struct nameidata *nd)
nd->last_type = LAST_BIND;
res = inode->i_link;
if (!res) {
- res = inode->i_op->follow_link(dentry, &last->cookie, nd);
+ res = inode->i_op->follow_link(dentry, &last->cookie);
if (IS_ERR(res)) {
out:
path_put(&last->link);
@@ -4485,12 +4486,12 @@ int generic_readlink(struct dentry *dentry, char __user *buffer, int buflen)
int res;

if (!link) {
- link = dentry->d_inode->i_op->follow_link(dentry, &cookie, NULL);
+ link = dentry->d_inode->i_op->follow_link(dentry, &cookie);
if (IS_ERR(link))
return PTR_ERR(link);
}
res = readlink_copy(buffer, buflen, link);
- if (cookie && dentry->d_inode->i_op->put_link)
+ if (dentry->d_inode->i_op->put_link)
dentry->d_inode->i_op->put_link(dentry, cookie);
return res;
}
@@ -4523,7 +4524,7 @@ int page_readlink(struct dentry *dentry, char __user *buffer, int buflen)
}
EXPORT_SYMBOL(page_readlink);

-const char *page_follow_link_light(struct dentry *dentry, void **cookie, struct nameidata *nd)
+const char *page_follow_link_light(struct dentry *dentry, void **cookie)
{
struct page *page = NULL;
char *res = page_getlink(dentry, &page);
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index c992b20..b6de433 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -42,7 +42,7 @@ error:
return -EIO;
}

-static const char *nfs_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *nfs_follow_link(struct dentry *dentry, void **cookie)
{
struct inode *inode = d_inode(dentry);
struct page *page;
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 235ad42..9986833 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -140,7 +140,7 @@ struct ovl_link_data {
void *cookie;
};

-static const char *ovl_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *ovl_follow_link(struct dentry *dentry, void **cookie)
{
struct dentry *realdentry;
struct inode *realinode;
@@ -160,7 +160,7 @@ static const char *ovl_follow_link(struct dentry *dentry, void **cookie, struct
data->realdentry = realdentry;
}

- ret = realinode->i_op->follow_link(realdentry, cookie, nd);
+ ret = realinode->i_op->follow_link(realdentry, cookie);
if (IS_ERR_OR_NULL(ret)) {
kfree(data);
return ret;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 52652f8..286a422 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1380,7 +1380,7 @@ static int proc_exe_link(struct dentry *dentry, struct path *exe_path)
return -ENOENT;
}

-static const char *proc_pid_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *proc_pid_follow_link(struct dentry *dentry, void **cookie)
{
struct inode *inode = d_inode(dentry);
struct path path;
@@ -1394,7 +1394,7 @@ static const char *proc_pid_follow_link(struct dentry *dentry, void **cookie, st
if (error)
goto out;

- nd_jump_link(nd, &path);
+ nd_jump_link(&path);
return NULL;
out:
return ERR_PTR(error);
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index acd51d7..eb35874 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -393,7 +393,7 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
};
#endif

-static const char *proc_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *proc_follow_link(struct dentry *dentry, void **cookie)
{
struct proc_dir_entry *pde = PDE(d_inode(dentry));
if (unlikely(!use_pde(pde)))
diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index 10d24dd..f6e8354 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -30,7 +30,7 @@ static const struct proc_ns_operations *ns_entries[] = {
&mntns_operations,
};

-static const char *proc_ns_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *proc_ns_follow_link(struct dentry *dentry, void **cookie)
{
struct inode *inode = d_inode(dentry);
const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
@@ -45,7 +45,7 @@ static const char *proc_ns_follow_link(struct dentry *dentry, void **cookie, str
if (ptrace_may_access(task, PTRACE_MODE_READ)) {
error = ns_get_path(&ns_path, task, ns_ops);
if (!error)
- nd_jump_link(nd, &ns_path);
+ nd_jump_link(&ns_path);
}
put_task_struct(task);
return error;
diff --git a/fs/proc/self.c b/fs/proc/self.c
index ad33394..113b8d0 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -18,7 +18,7 @@ static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
return readlink_copy(buffer, buflen, tmp);
}

-static const char *proc_self_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *proc_self_follow_link(struct dentry *dentry, void **cookie)
{
struct pid_namespace *ns = dentry->d_sb->s_fs_info;
pid_t tgid = task_tgid_nr_ns(current, ns);
diff --git a/fs/proc/thread_self.c b/fs/proc/thread_self.c
index 85c96e0..947b0f4 100644
--- a/fs/proc/thread_self.c
+++ b/fs/proc/thread_self.c
@@ -19,7 +19,7 @@ static int proc_thread_self_readlink(struct dentry *dentry, char __user *buffer,
return readlink_copy(buffer, buflen, tmp);
}

-static const char *proc_thread_self_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *proc_thread_self_follow_link(struct dentry *dentry, void **cookie)
{
struct pid_namespace *ns = dentry->d_sb->s_fs_info;
pid_t tgid = task_tgid_nr_ns(current, ns);
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 26c4dcb..7f51f39 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -416,8 +416,7 @@ xfs_vn_rename(
STATIC const char *
xfs_vn_follow_link(
struct dentry *dentry,
- void **cookie,
- struct nameidata *nd)
+ void **cookie)
{
char *link;
int error = -ENOMEM;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9ab9341..ed7c9f2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1608,7 +1608,7 @@ struct file_operations {

struct inode_operations {
struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
- const char * (*follow_link) (struct dentry *, void **, struct nameidata *);
+ const char * (*follow_link) (struct dentry *, void **);
int (*permission) (struct inode *, int);
struct posix_acl * (*get_acl)(struct inode *, int);

@@ -2705,7 +2705,7 @@ extern const struct file_operations generic_ro_fops;

extern int readlink_copy(char __user *, int, const char *);
extern int page_readlink(struct dentry *, char __user *, int);
-extern const char *page_follow_link_light(struct dentry *, void **, struct nameidata *);
+extern const char *page_follow_link_light(struct dentry *, void **);
extern void page_put_link(struct dentry *, void *);
extern int __page_symlink(struct inode *inode, const char *symname, int len,
int nofs);
@@ -2722,7 +2722,7 @@ void __inode_sub_bytes(struct inode *inode, loff_t bytes);
void inode_sub_bytes(struct inode *inode, loff_t bytes);
loff_t inode_get_bytes(struct inode *inode);
void inode_set_bytes(struct inode *inode, loff_t bytes);
-const char *simple_follow_link(struct dentry *, void **, struct nameidata *);
+const char *simple_follow_link(struct dentry *, void **);
extern const struct inode_operations simple_symlink_inode_operations;

extern int iterate_dir(struct file *, struct dir_context *);
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 3a6cc96..d756304 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -72,7 +72,7 @@ extern int follow_up(struct path *);
extern struct dentry *lock_rename(struct dentry *, struct dentry *);
extern void unlock_rename(struct dentry *, struct dentry *);

-extern void nd_jump_link(struct nameidata *nd, struct path *path);
+extern void nd_jump_link(struct path *path);

static inline void nd_terminate_link(void *name, size_t len, size_t maxlen)
{
diff --git a/mm/shmem.c b/mm/shmem.c
index d1693dc..e026822 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2475,7 +2475,7 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
return 0;
}

-static const char *shmem_follow_link(struct dentry *dentry, void **cookie, struct nameidata *nd)
+static const char *shmem_follow_link(struct dentry *dentry, void **cookie)
{
struct page *page = NULL;
int error = shmem_getpage(d_inode(dentry), 0, &page, SGP_READ, NULL);
--
2.1.4


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