btrfs-progs/kernel-shared/locking.c

25 lines
525 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#include "kerncompat.h"
#include "kernel-shared/ctree.h"
#include "kernel-shared/locking.h"
#include "kernel-shared/extent_io.h"
struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root)
{
root->node->refs++;
return root->node;
}
struct extent_buffer *btrfs_try_read_lock_root_node(struct btrfs_root *root)
{
root->node->refs++;
return root->node;
}
struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root)
{
root->node->refs++;
return root->node;
}