From 70e9b3571107b88674cd55ae4bed33f76261e7d3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 5 Mar 2011 21:12:22 -0500 Subject: [PATCH] get rid of nd->file 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 --- fs/namei.c | 15 +++++++-------- include/linux/namei.h | 1 - 2 files changed, 7 insertions(+), 9 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index 85f6e39b4034..a260a306daf5 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -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); diff --git a/include/linux/namei.h b/include/linux/namei.h index 265378a707bd..72ffd62ac736 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -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; -- 2.20.1