new helper: kfree_put_link()

duplicated to hell and back...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index a16b4e5..801975c 100644 (file)
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -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,

diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 6d0b072..26a754f 100644 (file)
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -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,

diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 7e36ceb..cc02347 100644 (file)
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -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);
-}

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 2ca62c4..0f9b66e 100644 (file)
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -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,

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index ced3257..d2384f7 100644 (file)
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -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,

diff --git a/fs/libfs.c b/fs/libfs.c
index 828622a..8c50184 100644 (file)
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -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);

diff --git a/fs/proc/self.c b/fs/proc/self.c
index 6b6a993..ffeb202 100644 (file)
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -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;

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3f40547..d80c243 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -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 *);