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fs/namei.c: new helper (path_cleanup())

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All callers of path_init() proceed to do the identical cleanup when
they are done with nameidata.  Don't open-code it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-11-20 14:18:09 -05:00
parent 5e53084d77
commit 893b7775a7
1 changed files with 13 additions and 17 deletions
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30
fs/namei.c
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@ -1943,6 +1943,16 @@ static int path_init(int dfd, const char *name, unsigned int flags,
return -ECHILD;
}
static void path_cleanup(struct nameidata *nd)
{
if (nd->root.mnt && !(nd->flags & LOOKUP_ROOT)) {
path_put(&nd->root);
nd->root.mnt = NULL;
}
if (unlikely(nd->base))
fput(nd->base);
}
static inline int lookup_last(struct nameidata *nd, struct path *path)
{
if (nd->last_type == LAST_NORM && nd->last.name[nd->last.len])
@ -2009,13 +2019,7 @@ static int path_lookupat(int dfd, const char *name,
}
out:
if (nd->base)
fput(nd->base);
if (nd->root.mnt && !(nd->flags & LOOKUP_ROOT)) {
path_put(&nd->root);
nd->root.mnt = NULL;
}
path_cleanup(nd);
return err;
}
@ -2349,12 +2353,7 @@ path_mountpoint(int dfd, const char *name, struct path *path, unsigned int flags
put_link(&nd, &link, cookie);
}
out:
if (nd.base)
fput(nd.base);
if (nd.root.mnt && !(nd.flags & LOOKUP_ROOT))
path_put(&nd.root);
path_cleanup(&nd);
return err;
}
@ -3252,10 +3251,7 @@ static struct file *path_openat(int dfd, struct filename *pathname,
put_link(nd, &link, cookie);
}
out:
if (nd->root.mnt && !(nd->flags & LOOKUP_ROOT))
path_put(&nd->root);
if (nd->base)
fput(nd->base);
path_cleanup(nd);
if (!(opened & FILE_OPENED)) {
BUG_ON(!error);
put_filp(file);