From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- fs/xfs/xfs_mru_cache.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 fs/xfs/xfs_mru_cache.h (limited to 'fs/xfs/xfs_mru_cache.h') diff --git a/fs/xfs/xfs_mru_cache.h b/fs/xfs/xfs_mru_cache.h new file mode 100644 index 000000000..f1fde1ecf --- /dev/null +++ b/fs/xfs/xfs_mru_cache.h @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2006-2007 Silicon Graphics, Inc. + * All Rights Reserved. + */ +#ifndef __XFS_MRU_CACHE_H__ +#define __XFS_MRU_CACHE_H__ + +struct xfs_mru_cache; + +struct xfs_mru_cache_elem { + struct list_head list_node; + unsigned long key; +}; + +/* Function pointer type for callback to free a client's data pointer. */ +typedef void (*xfs_mru_cache_free_func_t)(void *, struct xfs_mru_cache_elem *); + +int xfs_mru_cache_init(void); +void xfs_mru_cache_uninit(void); +int xfs_mru_cache_create(struct xfs_mru_cache **mrup, void *data, + unsigned int lifetime_ms, unsigned int grp_count, + xfs_mru_cache_free_func_t free_func); +void xfs_mru_cache_destroy(struct xfs_mru_cache *mru); +int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key, + struct xfs_mru_cache_elem *elem); +struct xfs_mru_cache_elem * +xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key); +void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key); +struct xfs_mru_cache_elem * +xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key); +void xfs_mru_cache_done(struct xfs_mru_cache *mru); + +#endif /* __XFS_MRU_CACHE_H__ */ -- cgit v1.2.3