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namei.c : update mnt when it needed 

update the mnt of the path when it is not equal to the new one.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Huang Shijie 2010-04-02 17:37:13 +08:00 committed by Al Viro
parent 51ee049e77
commit 9a2296832c
1 changed files with 3 additions and 2 deletions
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5
fs/namei.c
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@ -523,9 +523,10 @@ static void path_put_conditional(struct path *path, struct nameidata *nd)
static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
{
dput(nd->path.dentry);
if (nd->path.mnt != path->mnt)
if (nd->path.mnt != path->mnt) {
mntput(nd->path.mnt);
nd->path.mnt = path->mnt;
nd->path.mnt = path->mnt;
}
nd->path.dentry = path->dentry;
}