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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-08 22:49:21 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-10 01:23:45 +0100 |
| commit | adc0e91ab142abe93f5b0d7980ada8a7676231fe (patch) | |
| tree | 27ee89f960b7e2d6cd5179d914bc252324122c26 /fs/dcache.c | |
| parent | dcache: use a dispose list in select_parent (diff) | |
| download | linux-adc0e91ab142abe93f5b0d7980ada8a7676231fe.tar.xz linux-adc0e91ab142abe93f5b0d7980ada8a7676231fe.zip | |
vfs: new helper - d_make_root()
d_alloc_root() with iput() in case of allocation failure...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/dcache.c')
| -rw-r--r-- | fs/dcache.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index b209d73f9a98..3c6d3113a255 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -1440,6 +1440,23 @@ struct dentry * d_alloc_root(struct inode * root_inode) } EXPORT_SYMBOL(d_alloc_root); +struct dentry *d_make_root(struct inode *root_inode) +{ + struct dentry *res = NULL; + + if (root_inode) { + static const struct qstr name = { .name = "/", .len = 1 }; + + res = __d_alloc(root_inode->i_sb, &name); + if (res) + d_instantiate(res, root_inode); + else + iput(root_inode); + } + return res; +} +EXPORT_SYMBOL(d_make_root); + static struct dentry * __d_find_any_alias(struct inode *inode) { struct dentry *alias; |