mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 03:33:59 +08:00
22328d712d
There is no need to do a separate allocation for each mru element, just embedd the structure into the parent one in the user. Besides saving a memory allocation and the infrastructure required for it this also simplifies the API. While we do major surgery on xfs_mru_cache.c also de-typedef it and make struct mru_cache private to the implementation file. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2006-2007 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#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)(struct xfs_mru_cache_elem *elem);
|
|
|
|
int xfs_mru_cache_init(void);
|
|
void xfs_mru_cache_uninit(void);
|
|
int xfs_mru_cache_create(struct xfs_mru_cache **mrup, 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__ */
|