#ifndef __XFS_MOUNT_H__
#define __XFS_MOUNT_H__
-typedef struct xfs_trans_reservations {
- uint tr_write; /* extent alloc trans */
- uint tr_itruncate; /* truncate trans */
- uint tr_rename; /* rename trans */
- uint tr_link; /* link trans */
- uint tr_remove; /* unlink trans */
- uint tr_symlink; /* symlink trans */
- uint tr_create; /* create trans */
- uint tr_mkdir; /* mkdir trans */
- uint tr_ifree; /* inode free trans */
- uint tr_ichange; /* inode update trans */
- uint tr_growdata; /* fs data section grow trans */
- uint tr_swrite; /* sync write inode trans */
- uint tr_addafork; /* cvt inode to attributed trans */
- uint tr_writeid; /* write setuid/setgid file */
- uint tr_attrinval; /* attr fork buffer invalidation */
- uint tr_attrsetm; /* set/create an attribute at mount time */
- uint tr_attrsetrt; /* set/create an attribute at runtime */
- uint tr_attrrm; /* remove an attribute */
- uint tr_clearagi; /* clear bad agi unlinked ino bucket */
- uint tr_growrtalloc; /* grow realtime allocations */
- uint tr_growrtzero; /* grow realtime zeroing */
- uint tr_growrtfree; /* grow realtime freeing */
- uint tr_qm_sbchange; /* change quota flags */
- uint tr_qm_setqlim; /* adjust quota limits */
- uint tr_qm_dqalloc; /* allocate quota on disk */
- uint tr_qm_quotaoff; /* turn quota off */
- uint tr_qm_equotaoff;/* end of turn quota off */
- uint tr_sb; /* modify superblock */
-} xfs_trans_reservations_t;
-
-#ifndef __KERNEL__
-
-#define xfs_daddr_to_agno(mp,d) \
- ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
-#define xfs_daddr_to_agbno(mp,d) \
- ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
-
-#else /* __KERNEL__ */
+#ifdef __KERNEL__
struct xlog;
struct xfs_inode;
int m_ialloc_blks; /* blocks in inode allocation */
int m_inoalign_mask;/* mask sb_inoalignmt if used */
uint m_qflags; /* quota status flags */
- xfs_trans_reservations_t m_reservations;/* precomputed res values */
+ struct xfs_trans_resv m_resv; /* precomputed res values */
__uint64_t m_maxicount; /* maximum inode count */
__uint64_t m_resblks; /* total reserved blocks */
__uint64_t m_resblks_avail;/* available reserved blocks */
return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
}
-/*
- * perag get/put wrappers for ref counting
- */
-struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno);
-struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno,
- int tag);
-void xfs_perag_put(struct xfs_perag *pag);
-
/*
* Per-cpu superblock locking functions
*/
int64_t msb_delta; /* Change to make to specified field */
} xfs_mod_sb_t;
+/*
+ * Per-ag incore structure, copies of information in agf and agi, to improve the
+ * performance of allocation group selection. This is defined for the kernel
+ * only, and hence is defined here instead of in xfs_ag.h. You need the struct
+ * xfs_mount to be defined to look up a xfs_perag anyway (via mp->m_perag_tree),
+ * so this doesn't introduce any strange header file dependencies.
+ */
+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 */
+
+ /*
+ * 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;
+ spinlock_t pagb_lock; /* lock for pagb_tree */
+ struct rb_root pagb_tree; /* ordered tree of busy extents */
+
+ atomic_t pagf_fstrms; /* # of filestreams active in this AG */
+
+ spinlock_t pag_ici_lock; /* incore inode cache lock */
+ struct radix_tree_root pag_ici_root; /* incore inode cache root */
+ int pag_ici_reclaimable; /* reclaimable inodes */
+ struct mutex pag_ici_reclaim_lock; /* serialisation point */
+ unsigned long pag_ici_reclaim_cursor; /* reclaim restart point */
+
+ /* buffer cache index */
+ spinlock_t pag_buf_lock; /* lock for pag_buf_tree */
+ struct rb_root pag_buf_tree; /* ordered tree of active buffers */
+
+ /* for rcu-safe freeing */
+ struct rcu_head rcu_head;
+ int pagb_count; /* pagb slots in use */
+} xfs_perag_t;
+
extern int xfs_log_sbcount(xfs_mount_t *);
extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
extern int xfs_mountfs(xfs_mount_t *mp);
+extern int xfs_initialize_perag(xfs_mount_t *mp, xfs_agnumber_t agcount,
+ xfs_agnumber_t *maxagi);
extern void xfs_unmountfs(xfs_mount_t *);
extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
#endif /* __KERNEL__ */
-extern void xfs_sb_calc_crc(struct xfs_buf *);
-extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
-extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t,
- xfs_agnumber_t *);
-extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
-extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
-
-extern const struct xfs_buf_ops xfs_sb_buf_ops;
-
#endif /* __XFS_MOUNT_H__ */
projects / firefly-linux-kernel-4.4.55.git / blobdiff