mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
c34d570d15
Always set XFS_ALLOC_USERDATA for data fork allocations, and check it in xfs_alloc_is_userdata instead of the current obsfucated check. Also remove the xfs_alloc_is_userdata and xfs_alloc_allow_busy_reuse helpers to make the code a little easier to understand. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
240 lines
8.2 KiB
C
240 lines
8.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_ALLOC_H__
|
|
#define __XFS_ALLOC_H__
|
|
|
|
struct xfs_buf;
|
|
struct xfs_btree_cur;
|
|
struct xfs_mount;
|
|
struct xfs_perag;
|
|
struct xfs_trans;
|
|
|
|
extern struct workqueue_struct *xfs_alloc_wq;
|
|
|
|
unsigned int xfs_agfl_size(struct xfs_mount *mp);
|
|
|
|
/*
|
|
* Freespace allocation types. Argument to xfs_alloc_[v]extent.
|
|
*/
|
|
#define XFS_ALLOCTYPE_FIRST_AG 0x02 /* ... start at ag 0 */
|
|
#define XFS_ALLOCTYPE_THIS_AG 0x08 /* anywhere in this a.g. */
|
|
#define XFS_ALLOCTYPE_START_BNO 0x10 /* near this block else anywhere */
|
|
#define XFS_ALLOCTYPE_NEAR_BNO 0x20 /* in this a.g. and near this block */
|
|
#define XFS_ALLOCTYPE_THIS_BNO 0x40 /* at exactly this block */
|
|
|
|
/* this should become an enum again when the tracing code is fixed */
|
|
typedef unsigned int xfs_alloctype_t;
|
|
|
|
#define XFS_ALLOC_TYPES \
|
|
{ XFS_ALLOCTYPE_FIRST_AG, "FIRST_AG" }, \
|
|
{ XFS_ALLOCTYPE_THIS_AG, "THIS_AG" }, \
|
|
{ XFS_ALLOCTYPE_START_BNO, "START_BNO" }, \
|
|
{ XFS_ALLOCTYPE_NEAR_BNO, "NEAR_BNO" }, \
|
|
{ XFS_ALLOCTYPE_THIS_BNO, "THIS_BNO" }
|
|
|
|
/*
|
|
* Flags for xfs_alloc_fix_freelist.
|
|
*/
|
|
#define XFS_ALLOC_FLAG_TRYLOCK 0x00000001 /* use trylock for buffer locking */
|
|
#define XFS_ALLOC_FLAG_FREEING 0x00000002 /* indicate caller is freeing extents*/
|
|
#define XFS_ALLOC_FLAG_NORMAP 0x00000004 /* don't modify the rmapbt */
|
|
#define XFS_ALLOC_FLAG_NOSHRINK 0x00000008 /* don't shrink the freelist */
|
|
#define XFS_ALLOC_FLAG_CHECK 0x00000010 /* test only, don't modify args */
|
|
|
|
/*
|
|
* Argument structure for xfs_alloc routines.
|
|
* This is turned into a structure to avoid having 20 arguments passed
|
|
* down several levels of the stack.
|
|
*/
|
|
typedef struct xfs_alloc_arg {
|
|
struct xfs_trans *tp; /* transaction pointer */
|
|
struct xfs_mount *mp; /* file system mount point */
|
|
struct xfs_buf *agbp; /* buffer for a.g. freelist header */
|
|
struct xfs_perag *pag; /* per-ag struct for this agno */
|
|
xfs_fsblock_t fsbno; /* file system block number */
|
|
xfs_agnumber_t agno; /* allocation group number */
|
|
xfs_agblock_t agbno; /* allocation group-relative block # */
|
|
xfs_extlen_t minlen; /* minimum size of extent */
|
|
xfs_extlen_t maxlen; /* maximum size of extent */
|
|
xfs_extlen_t mod; /* mod value for extent size */
|
|
xfs_extlen_t prod; /* prod value for extent size */
|
|
xfs_extlen_t minleft; /* min blocks must be left after us */
|
|
xfs_extlen_t total; /* total blocks needed in xaction */
|
|
xfs_extlen_t alignment; /* align answer to multiple of this */
|
|
xfs_extlen_t minalignslop; /* slop for minlen+alignment calcs */
|
|
xfs_agblock_t min_agbno; /* set an agbno range for NEAR allocs */
|
|
xfs_agblock_t max_agbno; /* ... */
|
|
xfs_extlen_t len; /* output: actual size of extent */
|
|
xfs_alloctype_t type; /* allocation type XFS_ALLOCTYPE_... */
|
|
xfs_alloctype_t otype; /* original allocation type */
|
|
int datatype; /* mask defining data type treatment */
|
|
char wasdel; /* set if allocation was prev delayed */
|
|
char wasfromfl; /* set if allocation is from freelist */
|
|
struct xfs_owner_info oinfo; /* owner of blocks being allocated */
|
|
enum xfs_ag_resv_type resv; /* block reservation to use */
|
|
} xfs_alloc_arg_t;
|
|
|
|
/*
|
|
* Defines for datatype
|
|
*/
|
|
#define XFS_ALLOC_USERDATA (1 << 0)/* allocation is for user data*/
|
|
#define XFS_ALLOC_INITIAL_USER_DATA (1 << 1)/* special case start of file */
|
|
#define XFS_ALLOC_NOBUSY (1 << 2)/* Busy extents not allowed */
|
|
|
|
/* freespace limit calculations */
|
|
#define XFS_ALLOC_AGFL_RESERVE 4
|
|
unsigned int xfs_alloc_set_aside(struct xfs_mount *mp);
|
|
unsigned int xfs_alloc_ag_max_usable(struct xfs_mount *mp);
|
|
|
|
xfs_extlen_t xfs_alloc_longest_free_extent(struct xfs_perag *pag,
|
|
xfs_extlen_t need, xfs_extlen_t reserved);
|
|
unsigned int xfs_alloc_min_freelist(struct xfs_mount *mp,
|
|
struct xfs_perag *pag);
|
|
|
|
/*
|
|
* Compute and fill in value of m_ag_maxlevels.
|
|
*/
|
|
void
|
|
xfs_alloc_compute_maxlevels(
|
|
struct xfs_mount *mp); /* file system mount structure */
|
|
|
|
/*
|
|
* Get a block from the freelist.
|
|
* Returns with the buffer for the block gotten.
|
|
*/
|
|
int /* error */
|
|
xfs_alloc_get_freelist(
|
|
struct xfs_trans *tp, /* transaction pointer */
|
|
struct xfs_buf *agbp, /* buffer containing the agf structure */
|
|
xfs_agblock_t *bnop, /* block address retrieved from freelist */
|
|
int btreeblk); /* destination is a AGF btree */
|
|
|
|
/*
|
|
* Log the given fields from the agf structure.
|
|
*/
|
|
void
|
|
xfs_alloc_log_agf(
|
|
struct xfs_trans *tp, /* transaction pointer */
|
|
struct xfs_buf *bp, /* buffer for a.g. freelist header */
|
|
int fields);/* mask of fields to be logged (XFS_AGF_...) */
|
|
|
|
/*
|
|
* Interface for inode allocation to force the pag data to be initialized.
|
|
*/
|
|
int /* error */
|
|
xfs_alloc_pagf_init(
|
|
struct xfs_mount *mp, /* file system mount structure */
|
|
struct xfs_trans *tp, /* transaction pointer */
|
|
xfs_agnumber_t agno, /* allocation group number */
|
|
int flags); /* XFS_ALLOC_FLAGS_... */
|
|
|
|
/*
|
|
* Put the block on the freelist for the allocation group.
|
|
*/
|
|
int /* error */
|
|
xfs_alloc_put_freelist(
|
|
struct xfs_trans *tp, /* transaction pointer */
|
|
struct xfs_buf *agbp, /* buffer for a.g. freelist header */
|
|
struct xfs_buf *agflbp,/* buffer for a.g. free block array */
|
|
xfs_agblock_t bno, /* block being freed */
|
|
int btreeblk); /* owner was a AGF btree */
|
|
|
|
/*
|
|
* Read in the allocation group header (free/alloc section).
|
|
*/
|
|
int /* error */
|
|
xfs_alloc_read_agf(
|
|
struct xfs_mount *mp, /* mount point structure */
|
|
struct xfs_trans *tp, /* transaction pointer */
|
|
xfs_agnumber_t agno, /* allocation group number */
|
|
int flags, /* XFS_ALLOC_FLAG_... */
|
|
struct xfs_buf **bpp); /* buffer for the ag freelist header */
|
|
|
|
/*
|
|
* Allocate an extent (variable-size).
|
|
*/
|
|
int /* error */
|
|
xfs_alloc_vextent(
|
|
xfs_alloc_arg_t *args); /* allocation argument structure */
|
|
|
|
/*
|
|
* Free an extent.
|
|
*/
|
|
int /* error */
|
|
__xfs_free_extent(
|
|
struct xfs_trans *tp, /* transaction pointer */
|
|
xfs_fsblock_t bno, /* starting block number of extent */
|
|
xfs_extlen_t len, /* length of extent */
|
|
const struct xfs_owner_info *oinfo, /* extent owner */
|
|
enum xfs_ag_resv_type type, /* block reservation type */
|
|
bool skip_discard);
|
|
|
|
static inline int
|
|
xfs_free_extent(
|
|
struct xfs_trans *tp,
|
|
xfs_fsblock_t bno,
|
|
xfs_extlen_t len,
|
|
const struct xfs_owner_info *oinfo,
|
|
enum xfs_ag_resv_type type)
|
|
{
|
|
return __xfs_free_extent(tp, bno, len, oinfo, type, false);
|
|
}
|
|
|
|
int /* error */
|
|
xfs_alloc_lookup_le(
|
|
struct xfs_btree_cur *cur, /* btree cursor */
|
|
xfs_agblock_t bno, /* starting block of extent */
|
|
xfs_extlen_t len, /* length of extent */
|
|
int *stat); /* success/failure */
|
|
|
|
int /* error */
|
|
xfs_alloc_lookup_ge(
|
|
struct xfs_btree_cur *cur, /* btree cursor */
|
|
xfs_agblock_t bno, /* starting block of extent */
|
|
xfs_extlen_t len, /* length of extent */
|
|
int *stat); /* success/failure */
|
|
|
|
int /* error */
|
|
xfs_alloc_get_rec(
|
|
struct xfs_btree_cur *cur, /* btree cursor */
|
|
xfs_agblock_t *bno, /* output: starting block of extent */
|
|
xfs_extlen_t *len, /* output: length of extent */
|
|
int *stat); /* output: success/failure */
|
|
|
|
int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
|
|
xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
|
|
int xfs_alloc_read_agfl(struct xfs_mount *mp, struct xfs_trans *tp,
|
|
xfs_agnumber_t agno, struct xfs_buf **bpp);
|
|
int xfs_free_agfl_block(struct xfs_trans *, xfs_agnumber_t, xfs_agblock_t,
|
|
struct xfs_buf *, struct xfs_owner_info *);
|
|
int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, int flags);
|
|
int xfs_free_extent_fix_freelist(struct xfs_trans *tp, xfs_agnumber_t agno,
|
|
struct xfs_buf **agbp);
|
|
|
|
xfs_extlen_t xfs_prealloc_blocks(struct xfs_mount *mp);
|
|
|
|
typedef int (*xfs_alloc_query_range_fn)(
|
|
struct xfs_btree_cur *cur,
|
|
struct xfs_alloc_rec_incore *rec,
|
|
void *priv);
|
|
|
|
int xfs_alloc_query_range(struct xfs_btree_cur *cur,
|
|
struct xfs_alloc_rec_incore *low_rec,
|
|
struct xfs_alloc_rec_incore *high_rec,
|
|
xfs_alloc_query_range_fn fn, void *priv);
|
|
int xfs_alloc_query_all(struct xfs_btree_cur *cur, xfs_alloc_query_range_fn fn,
|
|
void *priv);
|
|
|
|
int xfs_alloc_has_record(struct xfs_btree_cur *cur, xfs_agblock_t bno,
|
|
xfs_extlen_t len, bool *exist);
|
|
|
|
typedef int (*xfs_agfl_walk_fn)(struct xfs_mount *mp, xfs_agblock_t bno,
|
|
void *priv);
|
|
int xfs_agfl_walk(struct xfs_mount *mp, struct xfs_agf *agf,
|
|
struct xfs_buf *agflbp, xfs_agfl_walk_fn walk_fn, void *priv);
|
|
|
|
#endif /* __XFS_ALLOC_H__ */
|