Commit 1e508e05 authored by Al Viro's avatar Al Viro
Browse files

convert mqueue 



All modifications via normal VFS codepaths; just take care of making
persistent in in mqueue_create_attr() and discardable in mqueue_unlink()
and it doesn't need kill_litter_super() at all.

mqueue_unlink() side is best handled by having it call simple_unlink()
rather than duplicating its guts...

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 50889f53

ipc/mqueue.c

+3 −9
Original line number Diff line number Diff line
@@ -599,8 +599,7 @@ static int mqueue_create_attr(struct dentry *dentry, umode_t mode, void *arg) 
	dir->i_size += DIRENT_SIZE;

	simple_inode_init_ts(dir);



	d_instantiate(dentry, inode);

	dget(dentry);

	d_make_persistent(dentry, inode);

	return 0;

out_unlock:

	spin_unlock(&mq_lock);
@@ -617,13 +616,8 @@ static int mqueue_create(struct mnt_idmap *idmap, struct inode *dir, 


static int mqueue_unlink(struct inode *dir, struct dentry *dentry)

{

	struct inode *inode = d_inode(dentry);



	simple_inode_init_ts(dir);

	dir->i_size -= DIRENT_SIZE;

	drop_nlink(inode);

	dput(dentry);

	return 0;

	return simple_unlink(dir, dentry);

}



/*
@@ -1638,7 +1632,7 @@ static const struct fs_context_operations mqueue_fs_context_ops = { 
static struct file_system_type mqueue_fs_type = {

	.name			= "mqueue",

	.init_fs_context	= mqueue_init_fs_context,

	.kill_sb		= kill_litter_super,

	.kill_sb		= kill_anon_super,

	.fs_flags		= FS_USERNS_MOUNT,

};