mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2024-12-28 16:52:18 +00:00
adbc76aa0f
Split busy extent tracking from struct xfs_perag into its own private structure, which can be pointed to by the generic group structure. Note that this structure is now dynamically allocated instead of embedded as the upcoming zone XFS code doesn't need it and will also have an unusually high number of groups due to hardware constraints. Dynamically allocating the structure this is a big memory saver for this case. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
|
|
* Copyright (c) 2010 David Chinner.
|
|
* Copyright (c) 2011 Christoph Hellwig.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_EXTENT_BUSY_H__
|
|
#define __XFS_EXTENT_BUSY_H__
|
|
|
|
struct xfs_group;
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
|
|
/*
|
|
* Busy block/extent entry. Indexed by a rbtree in the group to mark blocks
|
|
* that have been freed but whose transactions aren't committed to disk yet.
|
|
*/
|
|
struct xfs_extent_busy {
|
|
struct rb_node rb_node; /* group by-bno indexed search tree */
|
|
struct list_head list; /* transaction busy extent list */
|
|
struct xfs_group *group;
|
|
xfs_agblock_t bno;
|
|
xfs_extlen_t length;
|
|
unsigned int flags;
|
|
#define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */
|
|
#define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */
|
|
};
|
|
|
|
/*
|
|
* List used to track groups of related busy extents all the way through
|
|
* to discard completion.
|
|
*/
|
|
struct xfs_busy_extents {
|
|
struct list_head extent_list;
|
|
struct work_struct endio_work;
|
|
|
|
/*
|
|
* Owner is the object containing the struct xfs_busy_extents to free
|
|
* once the busy extents have been processed. If only the
|
|
* xfs_busy_extents object needs freeing, then point this at itself.
|
|
*/
|
|
void *owner;
|
|
};
|
|
|
|
void xfs_extent_busy_insert(struct xfs_trans *tp, struct xfs_group *xg,
|
|
xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags);
|
|
void xfs_extent_busy_insert_discard(struct xfs_group *xg, xfs_agblock_t bno,
|
|
xfs_extlen_t len, struct list_head *busy_list);
|
|
void xfs_extent_busy_clear(struct list_head *list, bool do_discard);
|
|
int xfs_extent_busy_search(struct xfs_group *xg, xfs_agblock_t bno,
|
|
xfs_extlen_t len);
|
|
void xfs_extent_busy_reuse(struct xfs_group *xg, xfs_agblock_t fbno,
|
|
xfs_extlen_t flen, bool userdata);
|
|
bool xfs_extent_busy_trim(struct xfs_group *xg, xfs_extlen_t minlen,
|
|
xfs_extlen_t maxlen, xfs_agblock_t *bno, xfs_extlen_t *len,
|
|
unsigned *busy_gen);
|
|
int xfs_extent_busy_flush(struct xfs_trans *tp, struct xfs_group *xg,
|
|
unsigned busy_gen, uint32_t alloc_flags);
|
|
void xfs_extent_busy_wait_all(struct xfs_mount *mp);
|
|
bool xfs_extent_busy_list_empty(struct xfs_group *xg, unsigned int *busy_gen);
|
|
struct xfs_extent_busy_tree *xfs_extent_busy_alloc(void);
|
|
|
|
int xfs_extent_busy_ag_cmp(void *priv, const struct list_head *a,
|
|
const struct list_head *b);
|
|
static inline void xfs_extent_busy_sort(struct list_head *list)
|
|
{
|
|
list_sort(NULL, list, xfs_extent_busy_ag_cmp);
|
|
}
|
|
|
|
#endif /* __XFS_EXTENT_BUSY_H__ */
|