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Commit 7de9c6ee authored by Al Viro's avatar Al Viro
Browse files

new helper: ihold() 



Clones an existing reference to inode; caller must already hold one.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 646ec461

fs/9p/vfs_inode.c

+3 −2
Original line number Diff line number Diff line
@@ -1789,9 +1789,10 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, 
		kfree(st);

	} else {

		/* Caching disabled. No need to get upto date stat info.

		 * This dentry will be released immediately. So, just i_count++

		 * This dentry will be released immediately. So, just hold the

		 * inode

		 */

		atomic_inc(&old_dentry->d_inode->i_count);

		ihold(old_dentry->d_inode);

	}



	dentry->d_op = old_dentry->d_op;

fs/affs/inode.c

+1 −1
Original line number Diff line number Diff line
@@ -388,7 +388,7 @@ affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s3 
		affs_adjust_checksum(inode_bh, block - be32_to_cpu(chain));

		mark_buffer_dirty_inode(inode_bh, inode);

		inode->i_nlink = 2;

		atomic_inc(&inode->i_count);

		ihold(inode);

	}

	affs_fix_checksum(sb, bh);

	mark_buffer_dirty_inode(bh, inode);

fs/afs/dir.c

+1 −1
Original line number Diff line number Diff line
@@ -1045,7 +1045,7 @@ static int afs_link(struct dentry *from, struct inode *dir, 
	if (ret < 0)

		goto link_error;



	atomic_inc(&vnode->vfs_inode.i_count);

	ihold(&vnode->vfs_inode);

	d_instantiate(dentry, &vnode->vfs_inode);

	key_put(key);

	_leave(" = 0");

fs/aio.c

+2 −3
Original line number Diff line number Diff line
@@ -1553,10 +1553,9 @@ static void aio_batch_add(struct address_space *mapping, 
	 *

	 * When we're called, we always have a reference

	 * on the file, so we must always have a reference

	 * on the inode, so igrab must always just

	 * bump the count and move on.

	 * on the inode, so ihold() is safe here.

	 */

	atomic_inc(&mapping->host->i_count);

	ihold(mapping->host);

	abe->mapping = mapping;

	hlist_add_head(&abe->list, &batch_hash[bucket]);

	return;

fs/anon_inodes.c

+2 −3
Original line number Diff line number Diff line
@@ -111,10 +111,9 @@ struct file *anon_inode_getfile(const char *name, 
	path.mnt = mntget(anon_inode_mnt);

	/*

	 * We know the anon_inode inode count is always greater than zero,

	 * so we can avoid doing an igrab() and we can use an open-coded

	 * atomic_inc().

	 * so ihold() is safe.

	 */

	atomic_inc(&anon_inode_inode->i_count);

	ihold(anon_inode_inode);



	path.dentry->d_op = &anon_inodefs_dentry_operations;

	d_instantiate(path.dentry, anon_inode_inode);