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new helper: kfree_put_link()

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duplicated to hell and back...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-09-16 10:30:04 -04:00
parent 12f3887222
commit 87dc800be2
8 changed files with 15 additions and 38 deletions
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2
fs/cifs/cifsfs.c
View File

@ -860,7 +860,7 @@ const struct inode_operations cifs_file_inode_ops = {
const struct inode_operations cifs_symlink_inode_ops = {
.readlink = generic_readlink,
.follow_link = cifs_follow_link,
.put_link = cifs_put_link,
.put_link = kfree_put_link,
.permission = cifs_permission,
/* BB add the following two eventually */
/* revalidate: cifs_revalidate,

2
fs/cifs/cifsfs.h
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@ -115,8 +115,6 @@ extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
/* Functions related to symlinks */
extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
extern void cifs_put_link(struct dentry *direntry,
struct nameidata *nd, void *);
extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
int buflen);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,

7
fs/cifs/link.c
View File

@ -621,10 +621,3 @@ symlink_exit:
free_xid(xid);
return rc;
}
void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie)
{
char *p = nd_get_link(nd);
if (!IS_ERR(p))
kfree(p);
}

12
fs/ecryptfs/inode.c
View File

@ -703,16 +703,6 @@ out:
return NULL;
}
static void
ecryptfs_put_link(struct dentry *dentry, struct nameidata *nd, void *ptr)
{
char *buf = nd_get_link(nd);
if (!IS_ERR(buf)) {
/* Free the char* */
kfree(buf);
}
}
/**
* upper_size_to_lower_size
* @crypt_stat: Crypt_stat associated with file
@ -1121,7 +1111,7 @@ out:
const struct inode_operations ecryptfs_symlink_iops = {
.readlink = generic_readlink,
.follow_link = ecryptfs_follow_link,
.put_link = ecryptfs_put_link,
.put_link = kfree_put_link,
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
.getattr = ecryptfs_getattr_link,

9
fs/gfs2/inode.c
View File

@ -1506,13 +1506,6 @@ out:
return NULL;
}
static void gfs2_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
{
char *s = nd_get_link(nd);
if (!IS_ERR(s))
kfree(s);
}
/**
* gfs2_permission -
* @inode: The inode
@ -1864,7 +1857,7 @@ const struct inode_operations gfs2_dir_iops = {
const struct inode_operations gfs2_symlink_iops = {
.readlink = generic_readlink,
.follow_link = gfs2_follow_link,
.put_link = gfs2_put_link,
.put_link = kfree_put_link,
.permission = gfs2_permission,
.setattr = gfs2_setattr,
.getattr = gfs2_getattr,

10
fs/libfs.c
View File

@ -10,6 +10,7 @@
#include <linux/vfs.h>
#include <linux/quotaops.h>
#include <linux/mutex.h>
#include <linux/namei.h>
#include <linux/exportfs.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h> /* sync_mapping_buffers */
@ -992,3 +993,12 @@ int noop_fsync(struct file *file, loff_t start, loff_t end, int datasync)
return 0;
}
EXPORT_SYMBOL(noop_fsync);
void kfree_put_link(struct dentry *dentry, struct nameidata *nd,
void *cookie)
{
char *s = nd_get_link(nd);
if (!IS_ERR(s))
kfree(s);
}
EXPORT_SYMBOL(kfree_put_link);

10
fs/proc/self.c
View File

@ -36,18 +36,10 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
return NULL;
}
static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
void *cookie)
{
char *s = nd_get_link(nd);
if (!IS_ERR(s))
kfree(s);
}
static const struct inode_operations proc_self_inode_operations = {
.readlink = proc_self_readlink,
.follow_link = proc_self_follow_link,
.put_link = proc_self_put_link,
.put_link = kfree_put_link,
};
static unsigned self_inum;

1
include/linux/fs.h
View File

@ -2502,6 +2502,7 @@ extern int __page_symlink(struct inode *inode, const char *symname, int len,
int nofs);
extern int page_symlink(struct inode *inode, const char *symname, int len);
extern const struct inode_operations page_symlink_inode_operations;
extern void kfree_put_link(struct dentry *, struct nameidata *, void *);
extern int generic_readlink(struct dentry *, char __user *, int);
extern void generic_fillattr(struct inode *, struct kstat *);
extern int vfs_getattr(struct path *, struct kstat *);