10b61f8a4SDave Chinner // SPDX-License-Identifier: GPL-2.0 2efc27b52SDave Chinner /* 3efc27b52SDave Chinner * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. 4efc27b52SDave Chinner * Copyright (c) 2010 David Chinner. 5efc27b52SDave Chinner * Copyright (c) 2011 Christoph Hellwig. 6efc27b52SDave Chinner * All Rights Reserved. 7efc27b52SDave Chinner */ 8efc27b52SDave Chinner #ifndef __XFS_EXTENT_BUSY_H__ 9efc27b52SDave Chinner #define __XFS_EXTENT_BUSY_H__ 10efc27b52SDave Chinner 11a4fbe6abSDave Chinner struct xfs_mount; 1245d06621SDave Chinner struct xfs_perag; 13a4fbe6abSDave Chinner struct xfs_trans; 14a4fbe6abSDave Chinner struct xfs_alloc_arg; 15a4fbe6abSDave Chinner 16efc27b52SDave Chinner /* 17efc27b52SDave Chinner * Busy block/extent entry. Indexed by a rbtree in perag to mark blocks that 18efc27b52SDave Chinner * have been freed but whose transactions aren't committed to disk yet. 19efc27b52SDave Chinner */ 204ecbfe63SDave Chinner struct xfs_extent_busy { 21efc27b52SDave Chinner struct rb_node rb_node; /* ag by-bno indexed search tree */ 22efc27b52SDave Chinner struct list_head list; /* transaction busy extent list */ 23efc27b52SDave Chinner xfs_agnumber_t agno; 24efc27b52SDave Chinner xfs_agblock_t bno; 25efc27b52SDave Chinner xfs_extlen_t length; 26efc27b52SDave Chinner unsigned int flags; 274ecbfe63SDave Chinner #define XFS_EXTENT_BUSY_DISCARDED 0x01 /* undergoing a discard op. */ 284ecbfe63SDave Chinner #define XFS_EXTENT_BUSY_SKIP_DISCARD 0x02 /* do not discard */ 29efc27b52SDave Chinner }; 30efc27b52SDave Chinner 31*428c4435SDave Chinner /* 32*428c4435SDave Chinner * List used to track groups of related busy extents all the way through 33*428c4435SDave Chinner * to discard completion. 34*428c4435SDave Chinner */ 35*428c4435SDave Chinner struct xfs_busy_extents { 36*428c4435SDave Chinner struct xfs_mount *mount; 37*428c4435SDave Chinner struct list_head extent_list; 38*428c4435SDave Chinner struct work_struct endio_work; 39*428c4435SDave Chinner 40*428c4435SDave Chinner /* 41*428c4435SDave Chinner * Owner is the object containing the struct xfs_busy_extents to free 42*428c4435SDave Chinner * once the busy extents have been processed. If only the 43*428c4435SDave Chinner * xfs_busy_extents object needs freeing, then point this at itself. 44*428c4435SDave Chinner */ 45*428c4435SDave Chinner void *owner; 46*428c4435SDave Chinner }; 47*428c4435SDave Chinner 48efc27b52SDave Chinner void 4945d06621SDave Chinner xfs_extent_busy_insert(struct xfs_trans *tp, struct xfs_perag *pag, 50efc27b52SDave Chinner xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags); 51efc27b52SDave Chinner 52efc27b52SDave Chinner void 534ecbfe63SDave Chinner xfs_extent_busy_clear(struct xfs_mount *mp, struct list_head *list, 54efc27b52SDave Chinner bool do_discard); 55efc27b52SDave Chinner 56efc27b52SDave Chinner int 5745d06621SDave Chinner xfs_extent_busy_search(struct xfs_mount *mp, struct xfs_perag *pag, 58efc27b52SDave Chinner xfs_agblock_t bno, xfs_extlen_t len); 59efc27b52SDave Chinner 60efc27b52SDave Chinner void 6145d06621SDave Chinner xfs_extent_busy_reuse(struct xfs_mount *mp, struct xfs_perag *pag, 62efc27b52SDave Chinner xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata); 63efc27b52SDave Chinner 64ebf55872SChristoph Hellwig bool 65ebf55872SChristoph Hellwig xfs_extent_busy_trim(struct xfs_alloc_arg *args, xfs_agblock_t *bno, 66ebf55872SChristoph Hellwig xfs_extlen_t *len, unsigned *busy_gen); 67ebf55872SChristoph Hellwig 688ebbf262SDave Chinner int 698ebbf262SDave Chinner xfs_extent_busy_flush(struct xfs_trans *tp, struct xfs_perag *pag, 706a2a9d77SDave Chinner unsigned busy_gen, uint32_t alloc_flags); 71ebf55872SChristoph Hellwig 72ebf55872SChristoph Hellwig void 73ebf55872SChristoph Hellwig xfs_extent_busy_wait_all(struct xfs_mount *mp); 74e700a06cSBen Myers 75efc27b52SDave Chinner int 764f0f586bSSami Tolvanen xfs_extent_busy_ag_cmp(void *priv, const struct list_head *a, 774f0f586bSSami Tolvanen const struct list_head *b); 78efc27b52SDave Chinner 794ecbfe63SDave Chinner static inline void xfs_extent_busy_sort(struct list_head *list) 80efc27b52SDave Chinner { 814ecbfe63SDave Chinner list_sort(NULL, list, xfs_extent_busy_ag_cmp); 82efc27b52SDave Chinner } 83efc27b52SDave Chinner 84efc27b52SDave Chinner #endif /* __XFS_EXTENT_BUSY_H__ */ 85