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namei: simplify the callers of follow_managed() 

now that it gets nameidata, no reason to have setting LOOKUP_JUMPED on
mountpoint crossing and calling path_put_conditional() on failures
done in every caller.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-04-22 10:30:08 -04:00
parent 756daf263e
commit 8402752ecf
1 changed files with 10 additions and 22 deletions
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32
fs/namei.c
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@ -1118,7 +1118,11 @@ static int follow_managed(struct path *path, struct nameidata *nd)
mntput(path->mnt);
if (ret == -EISDIR)
ret = 0;
return ret < 0 ? ret : need_mntput;
if (need_mntput)
nd->flags |= LOOKUP_JUMPED;
if (unlikely(ret < 0))
path_put_conditional(path, nd);
return ret;
}
int follow_down_one(struct path *path)
@ -1494,14 +1498,9 @@ unlazy:
path->mnt = mnt;
path->dentry = dentry;
err = follow_managed(path, nd);
if (unlikely(err < 0)) {
path_put_conditional(path, nd);
return err;
}
if (err)
nd->flags |= LOOKUP_JUMPED;
*inode = path->dentry->d_inode;
return 0;
if (likely(!err))
*inode = path->dentry->d_inode;
return err;
need_lookup:
return 1;
@ -1511,7 +1510,6 @@ need_lookup:
static int lookup_slow(struct nameidata *nd, struct path *path)
{
struct dentry *dentry, *parent;
int err;
parent = nd->path.dentry;
BUG_ON(nd->inode != parent->d_inode);
@ -1523,14 +1521,7 @@ static int lookup_slow(struct nameidata *nd, struct path *path)
return PTR_ERR(dentry);
path->mnt = nd->path.mnt;
path->dentry = dentry;
err = follow_managed(path, nd);
if (unlikely(err < 0)) {
path_put_conditional(path, nd);
return err;
}
if (err)
nd->flags |= LOOKUP_JUMPED;
return 0;
return follow_managed(path, nd);
}
static inline int may_lookup(struct nameidata *nd)
@ -3098,10 +3089,7 @@ retry_lookup:
error = follow_managed(&path, nd);
if (error < 0)
goto exit_dput;
if (error)
nd->flags |= LOOKUP_JUMPED;
goto out;
BUG_ON(nd->flags & LOOKUP_RCU);
inode = path.dentry->d_inode;