xfs_extent_busy.h (1995B)
1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. 4 * Copyright (c) 2010 David Chinner. 5 * Copyright (c) 2011 Christoph Hellwig. 6 * All Rights Reserved. 7 */ 8#ifndef __XFS_EXTENT_BUSY_H__ 9#define __XFS_EXTENT_BUSY_H__ 10 11struct xfs_mount; 12struct xfs_perag; 13struct xfs_trans; 14struct xfs_alloc_arg; 15 16/* 17 * Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that 18 * have been freed but whose transactions aren't committed to disk yet. 19 * 20 * Note that we use the transaction ID to record the transaction, not the 21 * transaction structure itself. See xfs_extent_busy_insert() for details. 22 */ 23struct xfs_extent_busy { 24 struct rb_node rb_node; /* ag by-bno indexed search tree */ 25 struct list_head list; /* transaction busy extent list */ 26 xfs_agnumber_t agno; 27 xfs_agblock_t bno; 28 xfs_extlen_t length; 29 unsigned int flags; 30#define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */ 31#define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */ 32}; 33 34void 35xfs_extent_busy_insert(struct xfs_trans *tp, struct xfs_perag *pag, 36 xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags); 37 38void 39xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list, 40 bool do_discard); 41 42int 43xfs_extent_busy_search(struct xfs_mount *mp, struct xfs_perag *pag, 44 xfs_agblock_t bno, xfs_extlen_t len); 45 46void 47xfs_extent_busy_reuse(struct xfs_mount *mp, struct xfs_perag *pag, 48 xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata); 49 50bool 51xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno, 52 xfs_extlen_t *len, unsigned *busy_gen); 53 54void 55xfs_extent_busy_flush(struct xfs_mount *mp, struct xfs_perag *pag, 56 unsigned busy_gen); 57 58void 59xfs_extent_busy_wait_all(struct xfs_mount *mp); 60 61int 62xfs_extent_busy_ag_cmp(void *priv, const struct list_head *a, 63 const struct list_head *b); 64 65static inline void xfs_extent_busy_sort(struct list_head *list) 66{ 67 list_sort(NULL, list, xfs_extent_busy_ag_cmp); 68} 69 70#endif /* __XFS_EXTENT_BUSY_H__ */