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vfs: d_alloc_root() gone

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all callers converted to d_make_root() by now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-02-12 22:15:47 -05:00
parent 318ceed088
commit 32991ab305
3 changed files with 6 additions and 25 deletions
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6
Documentation/filesystems/porting
View File

@ -429,3 +429,9 @@ filemap_write_and_wait_range() so that all dirty pages are synced out properly.
You must also keep in mind that ->fsync() is not called with i_mutex held
anymore, so if you require i_mutex locking you must make sure to take it and
release it yourself.
--
[mandatory]
d_alloc_root() is gone, along with a lot of bugs caused by code
misusing it. Replacement: d_make_root(inode). The difference is,
d_make_root() drops the reference to inode if dentry allocation fails.

24
fs/dcache.c
View File

@ -1443,30 +1443,6 @@ struct dentry *d_instantiate_unique(struct dentry *entry, struct inode *inode)
EXPORT_SYMBOL(d_instantiate_unique);
/**
* d_alloc_root - allocate root dentry
* @root_inode: inode to allocate the root for
*
* Allocate a root ("/") dentry for the inode given. The inode is
* instantiated and returned. %NULL is returned if there is insufficient
* memory or the inode passed is %NULL.
*/
struct dentry * d_alloc_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);
}
return res;
}
EXPORT_SYMBOL(d_alloc_root);
struct dentry *d_make_root(struct inode *root_inode)
{
struct dentry *res = NULL;

1
include/linux/dcache.h
View File

@ -222,7 +222,6 @@ extern void shrink_dcache_for_umount(struct super_block *);
extern int d_invalidate(struct dentry *);
/* only used at mount-time */
extern struct dentry * d_alloc_root(struct inode *);
extern struct dentry * d_make_root(struct inode *);
/* <clickety>-<click> the ramfs-type tree */