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authorAl Viro <viro@zeniv.linux.org.uk>2013-06-07 01:20:27 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-06-29 12:57:10 +0400
commit60545d0d4610b02e55f65d141c95b18ccf855b6e (patch)
tree252111eed41e5f54a7bd13b054420f750cb5e069 /fs/dcache.c
parentf9652e10c12b43d9bb957269745cf2fa5682fa92 (diff)
downloadop-kernel-dev-60545d0d4610b02e55f65d141c95b18ccf855b6e.zip
op-kernel-dev-60545d0d4610b02e55f65d141c95b18ccf855b6e.tar.gz
[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/dcache.c')
-rw-r--r--fs/dcache.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index f09b908..b7f049c 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2968,6 +2968,22 @@ rename_retry:
goto again;
}
+void d_tmpfile(struct dentry *dentry, struct inode *inode)
+{
+ inode_dec_link_count(inode);
+ BUG_ON(dentry->d_name.name != dentry->d_iname ||
+ !hlist_unhashed(&dentry->d_alias) ||
+ !d_unlinked(dentry));
+ spin_lock(&dentry->d_parent->d_lock);
+ spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ dentry->d_name.len = sprintf(dentry->d_iname, "#%llu",
+ (unsigned long long)inode->i_ino);
+ spin_unlock(&dentry->d_lock);
+ spin_unlock(&dentry->d_parent->d_lock);
+ d_instantiate(dentry, inode);
+}
+EXPORT_SYMBOL(d_tmpfile);
+
/**
* find_inode_number - check for dentry with name
* @dir: directory to check
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