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get rid of nd->file

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Don't stash the struct file * used as starting point of walk in nameidata;
pass file ** to path_init() instead.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-03-05 21:12:22 -05:00
parent 951361f954
commit 70e9b35711
2 changed files with 7 additions and 9 deletions
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15
fs/namei.c
View File

@ -1498,7 +1498,8 @@ lookup_parent:
return err;
}
static int path_init(int dfd, const char *name, unsigned int flags, struct nameidata *nd)
static int path_init(int dfd, const char *name, unsigned int flags,
struct nameidata *nd, struct file **fp)
{
int retval = 0;
int fput_needed;
@ -1508,7 +1509,6 @@ static int path_init(int dfd, const char *name, unsigned int flags, struct namei
nd->flags = flags | LOOKUP_JUMPED;
nd->depth = 0;
nd->root.mnt = NULL;
nd->file = NULL;
if (*name=='/') {
if (flags & LOOKUP_RCU) {
@ -1557,7 +1557,7 @@ static int path_init(int dfd, const char *name, unsigned int flags, struct namei
nd->path = file->f_path;
if (flags & LOOKUP_RCU) {
if (fput_needed)
nd->file = file;
*fp = file;
nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
br_read_lock(vfsmount_lock);
rcu_read_lock();
@ -1580,6 +1580,7 @@ out_fail:
static int path_lookupat(int dfd, const char *name,
unsigned int flags, struct nameidata *nd)
{
struct file *base = NULL;
int retval;
/*
@ -1596,7 +1597,7 @@ static int path_lookupat(int dfd, const char *name,
* be handled by restarting a traditional ref-walk (which will always
* be able to complete).
*/
retval = path_init(dfd, name, flags, nd);
retval = path_init(dfd, name, flags, nd, &base);
if (unlikely(retval))
return retval;
@ -1614,10 +1615,8 @@ static int path_lookupat(int dfd, const char *name,
if (!retval)
retval = handle_reval_path(nd);
if (nd->file) {
fput(nd->file);
nd->file = NULL;
}
if (base)
fput(base);
if (nd->root.mnt) {
path_put(&nd->root);

1
include/linux/namei.h
View File

@ -19,7 +19,6 @@ struct nameidata {
struct path path;
struct qstr last;
struct path root;
struct file *file;
struct inode *inode; /* path.dentry.d_inode */
unsigned int flags;
unsigned seq;