From 237d8b327abb428ff39b49e32ce07fdac468e32f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 7 May 2015 09:21:14 -0400 Subject: [PATCH] namei: store inode in nd->stack[] Signed-off-by: Al Viro --- fs/namei.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index e3214506016d..366b0f348d1c 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -507,6 +507,7 @@ struct nameidata { struct path link; void *cookie; const char *name; + struct inode *inode; } *stack, internal[EMBEDDED_LEVELS]; }; @@ -746,7 +747,7 @@ void nd_jump_link(struct path *path) static inline void put_link(struct nameidata *nd) { struct saved *last = nd->stack + --nd->depth; - struct inode *inode = last->link.dentry->d_inode; + struct inode *inode = last->inode; if (last->cookie && inode->i_op->put_link) inode->i_op->put_link(last->link.dentry, last->cookie); path_put(&last->link); @@ -779,7 +780,7 @@ static inline int may_follow_link(struct nameidata *nd) return 0; /* Allowed if owner and follower match. */ - inode = nd->stack[0].link.dentry->d_inode; + inode = nd->stack[0].inode; if (uid_eq(current_cred()->fsuid, inode->i_uid)) return 0; @@ -870,7 +871,7 @@ const char *get_link(struct nameidata *nd) { struct saved *last = nd->stack + nd->depth - 1; struct dentry *dentry = last->link.dentry; - struct inode *inode = dentry->d_inode; + struct inode *inode = last->inode; int error; const char *res; @@ -1569,6 +1570,7 @@ static int pick_link(struct nameidata *nd, struct path *link, unsigned seq) last = nd->stack + nd->depth++; last->link = *link; last->cookie = NULL; + last->inode = d_backing_inode(link->dentry); return 1; } -- 2.20.1