+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2005 Silicon Graphics, 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_MOUNT_H__
struct xfs_inode;
struct xfs_buftarg;
-struct xfs_dir_ops;
struct xfs_da_geometry;
+typedef void (*buf_writeback_fn)(struct xfs_buf *bp);
+
+/* dynamic preallocation free space thresholds, 5% down to 1% */
+enum {
+ XFS_LOWSP_1_PCNT = 0,
+ XFS_LOWSP_2_PCNT,
+ XFS_LOWSP_3_PCNT,
+ XFS_LOWSP_4_PCNT,
+ XFS_LOWSP_5_PCNT,
+ XFS_LOWSP_MAX,
+};
+
/*
* Define a user-level mount structure with all we need
* in order to make use of the numerous XFS_* macros.
#define m_icount m_sb.sb_icount
#define m_ifree m_sb.sb_ifree
#define m_fdblocks m_sb.sb_fdblocks
+ spinlock_t m_sb_lock;
+
+ /*
+ * Bitsets of per-fs metadata that have been checked and/or are sick.
+ * Callers must hold m_sb_lock to access these two fields.
+ */
+ uint8_t m_fs_checked;
+ uint8_t m_fs_sick;
+
char *m_fsname; /* filesystem name */
int m_bsize; /* fs logical block size */
+ spinlock_t m_agirotor_lock;
xfs_agnumber_t m_agfrotor; /* last ag where space found */
xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
xfs_agnumber_t m_maxagi; /* highest inode alloc group */
+ struct xfs_ino_geometry m_ino_geo; /* inode geometry */
uint m_rsumlevels; /* rt summary levels */
uint m_rsumsize; /* size of rt summary, bytes */
+ /*
+ * Optional cache of rt summary level per bitmap block with the
+ * invariant that m_rsum_cache[bbno] <= the minimum i for which
+ * rsum[i][bbno] != 0. Reads and writes are serialized by the rsumip
+ * inode lock.
+ */
+ uint8_t *m_rsum_cache;
struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
struct xfs_inode *m_rsumip; /* pointer to summary inode */
struct xfs_buftarg *m_ddev_targp;
uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
uint8_t m_sectbb_log; /* sectorlog - BBSHIFT */
uint8_t m_agno_log; /* log #ag's */
- uint8_t m_agino_log; /* #bits for agino in inum */
- uint m_inode_cluster_size;/* min inode buf size */
uint m_blockmask; /* sb_blocksize-1 */
uint m_blockwsize; /* sb_blocksize in words */
uint m_blockwmask; /* blockwsize-1 */
uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
- uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
- uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
uint m_rmap_mxr[2]; /* max rmap btree records */
uint m_rmap_mnr[2]; /* min rmap btree records */
uint m_refc_mxr[2]; /* max refc btree records */
uint m_refc_mnr[2]; /* min refc btree records */
- uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
- uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
- uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
+ uint m_alloc_maxlevels; /* max alloc btree levels */
+ uint m_bm_maxlevels[2]; /* max bmap btree levels */
uint m_rmap_maxlevels; /* max rmap btree levels */
uint m_refc_maxlevels; /* max refc btree levels */
+ unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */
xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */
uint m_alloc_set_aside; /* space we can't use */
uint m_ag_max_usable; /* max space per AG */
struct radix_tree_root m_perag_tree;
- uint m_flags; /* global mount flags */
- bool m_inotbt_nores; /* no per-AG finobt resv. */
+ uint64_t m_features; /* active filesystem features */
+ uint64_t m_low_space[XFS_LOWSP_MAX];
+ unsigned long m_opstate; /* dynamic state flags */
+ bool m_finobt_nores; /* no per-AG finobt resv. */
uint m_qflags; /* quota status flags */
uint m_attroffset; /* inode attribute offset */
- int m_ialloc_inos; /* inodes in inode allocation */
- int m_ialloc_blks; /* blocks in inode allocation */
- int m_ialloc_min_blks; /* min blocks in sparse inode
- * allocation */
- int m_litino; /* size of inode union area */
- int m_inoalign_mask;/* mask sb_inoalignmt if used */
struct xfs_trans_resv m_resv; /* precomputed res values */
- uint64_t m_maxicount; /* maximum inode count */
int m_dalign; /* stripe unit */
int m_swidth; /* stripe width */
- int m_sinoalign; /* stripe unit inode alignmnt */
const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
struct xfs_da_geometry *m_dir_geo; /* directory block geometry */
struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */
- const struct xfs_dir_ops *m_dir_inode_ops; /* vector of dir inode ops */
- const struct xfs_dir_ops *m_nondir_inode_ops; /* !dir inode ops */
-#define M_DIROPS(mp) ((mp)->m_dir_inode_ops)
/*
* anonymous struct to allow xfs_dquot_buf.c to compile.
int qi_dqperchunk;
} *m_quotainfo;
+ buf_writeback_fn m_buf_writeback_fn;
+
/*
* xlog is defined in libxlog and thus is not intialized by libxfs. This
* allows an application to initialize and store a reference to the log
* if warranted.
*/
- struct xlog *m_log;
-} xfs_mount_t;
+ struct xlog *m_log; /* log specific stuff */
-/* per-AG block reservation data structures*/
-enum xfs_ag_resv_type {
- XFS_AG_RESV_NONE = 0,
- XFS_AG_RESV_METADATA,
- XFS_AG_RESV_AGFL,
-};
+ /*
+ * Global count of allocation btree blocks in use across all AGs. Only
+ * used when perag reservation is enabled. Helps prevent block
+ * reservation from attempting to reserve allocation btree blocks.
+ */
+ atomic64_t m_allocbt_blks;
+ spinlock_t m_perag_lock; /* lock for m_perag_tree */
-struct xfs_ag_resv {
- /* number of blocks originally reserved here */
- xfs_extlen_t ar_orig_reserved;
- /* number of blocks reserved here */
- xfs_extlen_t ar_reserved;
- /* number of blocks originally asked for */
- xfs_extlen_t ar_asked;
-};
+} xfs_mount_t;
+
+#define M_IGEO(mp) (&(mp)->m_ino_geo)
/*
- * Per-ag incore structure, copies of information in agf and agi,
- * to improve the performance of allocation group selection.
+ * Flags for m_features.
+ *
+ * These are all the active features in the filesystem, regardless of how
+ * they are configured.
*/
-typedef struct xfs_perag {
- struct xfs_mount *pag_mount; /* owner filesystem */
- xfs_agnumber_t pag_agno; /* AG this structure belongs to */
- atomic_t pag_ref; /* perag reference count */
- char pagf_init; /* this agf's entry is initialized */
- char pagi_init; /* this agi's entry is initialized */
- char pagf_metadata; /* the agf is preferred to be metadata */
- char pagi_inodeok; /* The agi is ok for inodes */
- uint8_t pagf_levels[XFS_BTNUM_AGF];
- /* # of levels in bno & cnt btree */
- uint32_t pagf_flcount; /* count of blocks in freelist */
- xfs_extlen_t pagf_freeblks; /* total free blocks */
- xfs_extlen_t pagf_longest; /* longest free space */
- uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */
- xfs_agino_t pagi_freecount; /* number of free inodes */
- xfs_agino_t pagi_count; /* number of allocated inodes */
+#define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */
+#define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */
+#define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */
+#define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */
+#define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */
+#define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */
+#define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */
+#define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */
+#define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */
+#define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */
+#define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */
+#define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */
+#define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */
+#define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */
+#define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */
+#define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */
+#define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */
+#define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */
+#define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */
+#define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */
+#define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */
+#define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */
+#define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */
+#define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */
+#define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */
+#define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */
+#define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */
- /*
- * Inode allocation search lookup optimisation.
- * If the pagino matches, the search for new inodes
- * doesn't need to search the near ones again straight away
- */
- xfs_agino_t pagl_pagino;
- xfs_agino_t pagl_leftrec;
- xfs_agino_t pagl_rightrec;
- int pagb_count; /* pagb slots in use */
-
- /* Blocks reserved for all kinds of metadata. */
- struct xfs_ag_resv pag_meta_resv;
- /* Blocks reserved for just AGFL-based metadata. */
- struct xfs_ag_resv pag_agfl_resv;
-
- /* reference count */
- uint8_t pagf_refcount_level;
-} xfs_perag_t;
-
-static inline struct xfs_ag_resv *
-xfs_perag_resv(
- struct xfs_perag *pag,
- enum xfs_ag_resv_type type)
-{
- switch (type) {
- case XFS_AG_RESV_METADATA:
- return &pag->pag_meta_resv;
- case XFS_AG_RESV_AGFL:
- return &pag->pag_agfl_resv;
- default:
- return NULL;
- }
+#define __XFS_HAS_FEAT(name, NAME) \
+static inline bool xfs_has_ ## name (struct xfs_mount *mp) \
+{ \
+ return mp->m_features & XFS_FEAT_ ## NAME; \
+}
+
+/* Some features can be added dynamically so they need a set wrapper, too. */
+#define __XFS_ADD_FEAT(name, NAME) \
+ __XFS_HAS_FEAT(name, NAME); \
+static inline void xfs_add_ ## name (struct xfs_mount *mp) \
+{ \
+ mp->m_features |= XFS_FEAT_ ## NAME; \
+ xfs_sb_version_add ## name(&mp->m_sb); \
+}
+
+/* Superblock features */
+__XFS_ADD_FEAT(attr, ATTR)
+__XFS_HAS_FEAT(nlink, NLINK)
+__XFS_ADD_FEAT(quota, QUOTA)
+__XFS_HAS_FEAT(align, ALIGN)
+__XFS_HAS_FEAT(dalign, DALIGN)
+__XFS_HAS_FEAT(logv2, LOGV2)
+__XFS_HAS_FEAT(sector, SECTOR)
+__XFS_HAS_FEAT(extflg, EXTFLG)
+__XFS_HAS_FEAT(asciici, ASCIICI)
+__XFS_HAS_FEAT(lazysbcount, LAZYSBCOUNT)
+__XFS_ADD_FEAT(attr2, ATTR2)
+__XFS_HAS_FEAT(parent, PARENT)
+__XFS_ADD_FEAT(projid32, PROJID32)
+__XFS_HAS_FEAT(crc, CRC)
+__XFS_HAS_FEAT(v3inodes, V3INODES)
+__XFS_HAS_FEAT(pquotino, PQUOTINO)
+__XFS_HAS_FEAT(ftype, FTYPE)
+__XFS_HAS_FEAT(finobt, FINOBT)
+__XFS_HAS_FEAT(rmapbt, RMAPBT)
+__XFS_HAS_FEAT(reflink, REFLINK)
+__XFS_HAS_FEAT(sparseinodes, SPINODES)
+__XFS_HAS_FEAT(metauuid, META_UUID)
+__XFS_HAS_FEAT(realtime, REALTIME)
+__XFS_HAS_FEAT(inobtcounts, INOBTCNT)
+__XFS_HAS_FEAT(bigtime, BIGTIME)
+__XFS_HAS_FEAT(needsrepair, NEEDSREPAIR)
+__XFS_HAS_FEAT(large_extent_counts, NREXT64)
+
+/* Kernel mount features that we don't support */
+#define __XFS_UNSUPP_FEAT(name) \
+static inline bool xfs_has_ ## name (struct xfs_mount *mp) \
+{ \
+ return false; \
+}
+__XFS_UNSUPP_FEAT(wsync)
+__XFS_UNSUPP_FEAT(noattr2)
+__XFS_UNSUPP_FEAT(ikeep)
+__XFS_UNSUPP_FEAT(swalloc)
+__XFS_UNSUPP_FEAT(small_inums)
+__XFS_UNSUPP_FEAT(readonly)
+
+/* Operational mount state flags */
+#define XFS_OPSTATE_INODE32 0 /* inode32 allocator active */
+#define XFS_OPSTATE_DEBUGGER 1 /* is this the debugger? */
+#define XFS_OPSTATE_REPORT_CORRUPTION 2 /* report buffer corruption? */
+#define XFS_OPSTATE_PERAG_DATA_LOADED 3 /* per-AG data initialized? */
+
+#define __XFS_IS_OPSTATE(name, NAME) \
+static inline bool xfs_is_ ## name (struct xfs_mount *mp) \
+{ \
+ return (mp)->m_opstate & (1UL << XFS_OPSTATE_ ## NAME); \
+} \
+static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \
+{ \
+ bool ret = xfs_is_ ## name(mp); \
+\
+ (mp)->m_opstate &= ~(1UL << XFS_OPSTATE_ ## NAME); \
+ return ret; \
+} \
+static inline bool xfs_set_ ## name (struct xfs_mount *mp) \
+{ \
+ bool ret = xfs_is_ ## name(mp); \
+\
+ (mp)->m_opstate |= (1UL << XFS_OPSTATE_ ## NAME); \
+ return ret; \
+}
+
+__XFS_IS_OPSTATE(inode32, INODE32)
+__XFS_IS_OPSTATE(debugger, DEBUGGER)
+__XFS_IS_OPSTATE(reporting_corruption, REPORT_CORRUPTION)
+__XFS_IS_OPSTATE(perag_data_loaded, PERAG_DATA_LOADED)
+
+#define __XFS_UNSUPP_OPSTATE(name) \
+static inline bool xfs_is_ ## name (struct xfs_mount *mp) \
+{ \
+ return false; \
}
+__XFS_UNSUPP_OPSTATE(readonly)
+__XFS_UNSUPP_OPSTATE(shutdown)
-#define LIBXFS_MOUNT_DEBUGGER 0x0001
-#define LIBXFS_MOUNT_32BITINODES 0x0002
-#define LIBXFS_MOUNT_32BITINOOPT 0x0004
-#define LIBXFS_MOUNT_COMPAT_ATTR 0x0008
-#define LIBXFS_MOUNT_ATTR2 0x0010
-#define LIBXFS_MOUNT_WANT_CORRUPTED 0x0020
+/* don't fail on device size or AG count checks */
+#define LIBXFS_MOUNT_DEBUGGER (1U << 0)
+/* report metadata corruption to stdout */
+#define LIBXFS_MOUNT_REPORT_CORRUPTION (1U << 1)
#define LIBXFS_BHASHSIZE(sbp) (1<<10)
-extern xfs_mount_t *libxfs_mount (xfs_mount_t *, xfs_sb_t *,
- dev_t, dev_t, dev_t, int);
-extern void libxfs_umount (xfs_mount_t *);
+void libxfs_compute_all_maxlevels(struct xfs_mount *mp);
+struct xfs_mount *libxfs_mount(struct xfs_mount *mp, struct xfs_sb *sb,
+ dev_t dev, dev_t logdev, dev_t rtdev, unsigned int flags);
+int libxfs_flush_mount(struct xfs_mount *mp);
+int libxfs_umount(struct xfs_mount *mp);
extern void libxfs_rtmount_destroy (xfs_mount_t *);
+/* Dummy xfs_dquot so that libxfs compiles. */
+struct xfs_dquot {
+ int q_type;
+};
+
+typedef struct wait_queue_head {
+} wait_queue_head_t;
+
+static inline void wake_up(wait_queue_head_t *wq) {}
+
+struct xfs_defer_drain { /* empty */ };
+
+#define xfs_defer_drain_init(dr) ((void)0)
+#define xfs_defer_drain_free(dr) ((void)0)
+
+#define xfs_perag_intent_get(mp, agno) xfs_perag_get((mp), (agno))
+#define xfs_perag_intent_put(pag) xfs_perag_put(pag)
+
+static inline void xfs_perag_intent_hold(struct xfs_perag *pag) {}
+static inline void xfs_perag_intent_rele(struct xfs_perag *pag) {}
+
#endif /* __XFS_MOUNT_H__ */
projects / thirdparty / xfsprogs-dev.git / blobdiff