diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_shared.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_shared.h | 230 |
1 files changed, 170 insertions, 60 deletions
diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h index c6f4eb46fe26..b1e0d9bc1f7d 100644 --- a/fs/xfs/libxfs/xfs_shared.h +++ b/fs/xfs/libxfs/xfs_shared.h @@ -1,20 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2000-2005 Silicon Graphics, Inc. * Copyright (c) 2013 Red Hat, Inc. * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_SHARED_H__ #define __XFS_SHARED_H__ @@ -34,60 +22,147 @@ 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_agi_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_bnobt_buf_ops; +extern const struct xfs_buf_ops xfs_cntbt_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_dquot_buf_ra_ops; +extern const struct xfs_buf_ops xfs_finobt_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_refcountbt_buf_ops; +extern const struct xfs_buf_ops xfs_rmapbt_buf_ops; +extern const struct xfs_buf_ops xfs_rtbitmap_buf_ops; +extern const struct xfs_buf_ops xfs_rtsummary_buf_ops; +extern const struct xfs_buf_ops xfs_rtbuf_ops; +extern const struct xfs_buf_ops xfs_rtsb_buf_ops; +extern const struct xfs_buf_ops xfs_rtrefcountbt_buf_ops; +extern const struct xfs_buf_ops xfs_rtrmapbt_buf_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; -/* - * This structure is used to track log items associated with - * a transaction. It points to the log item and keeps some - * flags to track the state of the log item. It also tracks - * the amount of space needed to log the item it describes - * once we get to commit processing (see xfs_trans_commit()). - */ -struct xfs_log_item_desc { - struct xfs_log_item *lid_item; - struct list_head lid_trans; - unsigned char lid_flags; -}; +/* btree ops */ +extern const struct xfs_btree_ops xfs_bnobt_ops; +extern const struct xfs_btree_ops xfs_cntbt_ops; +extern const struct xfs_btree_ops xfs_inobt_ops; +extern const struct xfs_btree_ops xfs_finobt_ops; +extern const struct xfs_btree_ops xfs_bmbt_ops; +extern const struct xfs_btree_ops xfs_refcountbt_ops; +extern const struct xfs_btree_ops xfs_rmapbt_ops; +extern const struct xfs_btree_ops xfs_rmapbt_mem_ops; +extern const struct xfs_btree_ops xfs_rtrmapbt_ops; +extern const struct xfs_btree_ops xfs_rtrmapbt_mem_ops; +extern const struct xfs_btree_ops xfs_rtrefcountbt_ops; + +static inline bool xfs_btree_is_bno(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_bnobt_ops; +} + +static inline bool xfs_btree_is_cnt(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_cntbt_ops; +} + +static inline bool xfs_btree_is_bmap(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_bmbt_ops; +} + +static inline bool xfs_btree_is_ino(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_inobt_ops; +} + +static inline bool xfs_btree_is_fino(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_finobt_ops; +} + +static inline bool xfs_btree_is_refcount(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_refcountbt_ops; +} -#define XFS_LID_DIRTY 0x1 +static inline bool xfs_btree_is_rmap(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_rmapbt_ops; +} + +#ifdef CONFIG_XFS_BTREE_IN_MEM +static inline bool xfs_btree_is_mem_rmap(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_rmapbt_mem_ops; +} + +static inline bool xfs_btree_is_mem_rtrmap(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_rtrmapbt_mem_ops; +} +#else +# define xfs_btree_is_mem_rmap(...) (false) +# define xfs_btree_is_mem_rtrmap(...) (false) +#endif + +static inline bool xfs_btree_is_rtrmap(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_rtrmapbt_ops; +} + +static inline bool xfs_btree_is_rtrefcount(const struct xfs_btree_ops *ops) +{ + return ops == &xfs_rtrefcountbt_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 */ +/* Transaction needs to be logged */ +#define XFS_TRANS_DIRTY (1u << 0) +/* Superblock is dirty and needs to be logged */ +#define XFS_TRANS_SB_DIRTY (1u << 1) +/* Transaction took a permanent log reservation */ +#define XFS_TRANS_PERM_LOG_RES (1u << 2) +/* Synchronous transaction commit needed */ +#define XFS_TRANS_SYNC (1u << 3) +/* Transaction can use reserve block pool */ +#define XFS_TRANS_RESERVE (1u << 4) +/* Transaction should avoid VFS level superblock write accounting */ +#define XFS_TRANS_NO_WRITECOUNT (1u << 5) +/* Transaction has freed blocks returned to it's reservation */ +#define XFS_TRANS_RES_FDBLKS (1u << 6) +/* Transaction contains an intent done log item */ +#define XFS_TRANS_HAS_INTENT_DONE (1u << 7) +/* + * 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 (1u << 8) + +/* Transaction has locked the rtbitmap and rtsum inodes */ +#define XFS_TRANS_RTBITMAP_LOCKED (1u << 9) /* * Field values for xfs_trans_mod_sb. @@ -106,6 +181,7 @@ int xfs_log_calc_minimum_size(struct xfs_mount *); #define XFS_TRANS_SB_RBLOCKS 0x00000800 #define XFS_TRANS_SB_REXTENTS 0x00001000 #define XFS_TRANS_SB_REXTSLOG 0x00002000 +#define XFS_TRANS_SB_RGCOUNT 0x00004000 /* * Here we centralize the specification of XFS meta-data buffer reference count @@ -124,24 +200,58 @@ int xfs_log_calc_minimum_size(struct xfs_mount *); #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 */ +/* Computed inode geometry for the filesystem. */ +struct xfs_ino_geometry { + /* Maximum inode count in this filesystem. */ + uint64_t maxicount; + /* Actual inode cluster buffer size, in bytes. */ + unsigned int inode_cluster_size; -/* - * 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); + /* + * Desired inode cluster buffer size, in bytes. This value is not + * rounded up to at least one filesystem block, which is necessary for + * the sole purpose of validating sb_spino_align. Runtime code must + * only ever use inode_cluster_size. + */ + unsigned int inode_cluster_size_raw; + + /* Inode cluster sizes, adjusted to be at least 1 fsb. */ + unsigned int inodes_per_cluster; + unsigned int blocks_per_cluster; + + /* Inode cluster alignment. */ + unsigned int cluster_align; + unsigned int cluster_align_inodes; + unsigned int inoalign_mask; /* mask sb_inoalignmt if used */ + + unsigned int inobt_mxr[2]; /* max inobt btree records */ + unsigned int inobt_mnr[2]; /* min inobt btree records */ + unsigned int inobt_maxlevels; /* max inobt btree levels. */ + + /* Size of inode allocations under normal operation. */ + unsigned int ialloc_inos; + unsigned int ialloc_blks; + + /* Minimum inode blocks for a sparse allocation. */ + unsigned int ialloc_min_blks; + + /* stripe unit inode alignment */ + unsigned int ialloc_align; + + unsigned int agino_log; /* #bits for agino in inum */ + + /* precomputed default inode attribute fork offset */ + unsigned int attr_fork_offset; + + /* precomputed value for di_flags2 */ + uint64_t new_diflags2; + + /* minimum folio order of a page cache allocation */ + unsigned int min_folio_order; + +}; #endif /* __XFS_SHARED_H__ */ |