mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 19:25:27 +07:00
1214f1cf66
The dop_low field enables the low free space allocation mode when a previous allocation has detected difficulty allocating blocks. It has historically been part of the xfs_defer_ops structure, which means if enabled, it remains enabled across a set of transactions until the deferred operations have completed and the dfops is reset. Now that the dfops is embedded in the transaction, we can save a bit more space by using a transaction flag rather than a standalone boolean. Drop the ->dop_low field and replace it with a transaction flag that is set at the same points, carried across rolling transactions and cleared on completion of deferred operations. This essentially emulates the behavior of ->dop_low and so should not change behavior. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
138 lines
5.1 KiB
C
138 lines
5.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
|
|
* Copyright (c) 2013 Red Hat, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_SHARED_H__
|
|
#define __XFS_SHARED_H__
|
|
|
|
/*
|
|
* Definitions shared between kernel and userspace that don't fit into any other
|
|
* header file that is shared with userspace.
|
|
*/
|
|
struct xfs_ifork;
|
|
struct xfs_buf;
|
|
struct xfs_buf_ops;
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
struct xfs_inode;
|
|
|
|
/*
|
|
* Buffer verifier operations are widely used, including userspace tools
|
|
*/
|
|
extern const struct xfs_buf_ops xfs_agf_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agi_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agf_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agfl_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_allocbt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_rmapbt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_refcountbt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_bmbt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_da3_node_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_dquot_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_symlink_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_agi_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_inobt_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_inode_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
|
|
extern const struct xfs_buf_ops xfs_dquot_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_dquot_buf_ra_ops;
|
|
extern const struct xfs_buf_ops xfs_sb_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_symlink_buf_ops;
|
|
extern const struct xfs_buf_ops xfs_rtbuf_ops;
|
|
|
|
/* log size calculation functions */
|
|
int xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes);
|
|
int xfs_log_calc_minimum_size(struct xfs_mount *);
|
|
|
|
struct xfs_trans_res;
|
|
void xfs_log_get_max_trans_res(struct xfs_mount *mp,
|
|
struct xfs_trans_res *max_resp);
|
|
|
|
/*
|
|
* Values for t_flags.
|
|
*/
|
|
#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
|
|
#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
|
|
#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
|
|
#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
|
|
#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
|
|
#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
|
|
#define XFS_TRANS_NO_WRITECOUNT 0x40 /* do not elevate SB writecount */
|
|
#define XFS_TRANS_NOFS 0x80 /* pass KM_NOFS to kmem_alloc */
|
|
/*
|
|
* LOWMODE is used by the allocator to activate the lowspace algorithm - when
|
|
* free space is running low the extent allocator may choose to allocate an
|
|
* extent from an AG without leaving sufficient space for a btree split when
|
|
* inserting the new extent. In this case the allocator will enable the
|
|
* lowspace algorithm which is supposed to allow further allocations (such as
|
|
* btree splits and newroots) to allocate from sequential AGs. In order to
|
|
* avoid locking AGs out of order the lowspace algorithm will start searching
|
|
* for free space from AG 0. If the correct transaction reservations have been
|
|
* made then this algorithm will eventually find all the space it needs.
|
|
*/
|
|
#define XFS_TRANS_LOWMODE 0x100 /* allocate in low space mode */
|
|
|
|
/*
|
|
* Field values for xfs_trans_mod_sb.
|
|
*/
|
|
#define XFS_TRANS_SB_ICOUNT 0x00000001
|
|
#define XFS_TRANS_SB_IFREE 0x00000002
|
|
#define XFS_TRANS_SB_FDBLOCKS 0x00000004
|
|
#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
|
|
#define XFS_TRANS_SB_FREXTENTS 0x00000010
|
|
#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
|
|
#define XFS_TRANS_SB_DBLOCKS 0x00000040
|
|
#define XFS_TRANS_SB_AGCOUNT 0x00000080
|
|
#define XFS_TRANS_SB_IMAXPCT 0x00000100
|
|
#define XFS_TRANS_SB_REXTSIZE 0x00000200
|
|
#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
|
|
#define XFS_TRANS_SB_RBLOCKS 0x00000800
|
|
#define XFS_TRANS_SB_REXTENTS 0x00001000
|
|
#define XFS_TRANS_SB_REXTSLOG 0x00002000
|
|
|
|
/*
|
|
* Here we centralize the specification of XFS meta-data buffer reference count
|
|
* values. This determines how hard the buffer cache tries to hold onto the
|
|
* buffer.
|
|
*/
|
|
#define XFS_AGF_REF 4
|
|
#define XFS_AGI_REF 4
|
|
#define XFS_AGFL_REF 3
|
|
#define XFS_INO_BTREE_REF 3
|
|
#define XFS_ALLOC_BTREE_REF 2
|
|
#define XFS_BMAP_BTREE_REF 2
|
|
#define XFS_RMAP_BTREE_REF 2
|
|
#define XFS_DIR_BTREE_REF 2
|
|
#define XFS_INO_REF 2
|
|
#define XFS_ATTR_BTREE_REF 1
|
|
#define XFS_DQUOT_REF 1
|
|
#define XFS_REFC_BTREE_REF 1
|
|
#define XFS_SSB_REF 0
|
|
|
|
/*
|
|
* Flags for xfs_trans_ichgtime().
|
|
*/
|
|
#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
|
|
#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
|
|
#define XFS_ICHGTIME_CREATE 0x4 /* inode create timestamp */
|
|
|
|
|
|
/*
|
|
* Symlink decoding/encoding functions
|
|
*/
|
|
int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen);
|
|
int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
|
|
uint32_t size, struct xfs_buf *bp);
|
|
bool xfs_symlink_hdr_ok(xfs_ino_t ino, uint32_t offset,
|
|
uint32_t size, struct xfs_buf *bp);
|
|
void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp,
|
|
struct xfs_inode *ip, struct xfs_ifork *ifp);
|
|
xfs_failaddr_t xfs_symlink_shortform_verify(struct xfs_inode *ip);
|
|
|
|
#endif /* __XFS_SHARED_H__ */
|