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vfs: do_last(): inline walk_component()

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Copy walk_component() into do_lookup().

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Miklos Szeredi 2012-05-21 17:30:07 +02:00 committed by Al Viro
parent e276ae672f
commit a1eb331530
1 changed files with 30 additions and 5 deletions
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35
fs/namei.c
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@ -2200,6 +2200,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
int want_write = 0;
int acc_mode = op->acc_mode;
struct file *filp;
struct inode *inode;
int error;
nd->flags &= ~LOOKUP_PARENT;
@ -2237,12 +2238,36 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
if (open_flag & O_PATH && !(nd->flags & LOOKUP_FOLLOW))
symlink_ok = 1;
/* we _can_ be in RCU mode here */
error = walk_component(nd, path, &nd->last, LAST_NORM,
!symlink_ok);
if (error < 0)
return ERR_PTR(error);
if (error) /* symlink */
error = lookup_fast(nd, &nd->last, path, &inode);
if (unlikely(error)) {
if (error < 0)
goto exit;
error = lookup_slow(nd, &nd->last, path);
if (error < 0)
goto exit;
inode = path->dentry->d_inode;
}
error = -ENOENT;
if (!inode) {
path_to_nameidata(path, nd);
goto exit;
}
if (should_follow_link(inode, !symlink_ok)) {
if (nd->flags & LOOKUP_RCU) {
if (unlikely(unlazy_walk(nd, path->dentry))) {
error = -ECHILD;
goto exit;
}
}
BUG_ON(inode != path->dentry->d_inode);
return NULL;
}
path_to_nameidata(path, nd);
nd->inode = inode;
/* sayonara */
error = complete_walk(nd);
if (error)