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Diffstat (limited to 'fs/xfs/xfs_mount.h')
-rw-r--r--fs/xfs/xfs_mount.h110
1 files changed, 3 insertions, 107 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index bb67274ee23f..c78b63fe779a 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -12,6 +12,7 @@ struct xfs_mru_cache;
struct xfs_ail;
struct xfs_quotainfo;
struct xfs_da_geometry;
+struct xfs_perag;
/* dynamic preallocation free space thresholds, 5% down to 1% */
enum {
@@ -297,117 +298,12 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
}
-/* per-AG block reservation data structures*/
-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;
-};
-
-/*
- * Per-ag incore structure, copies of information in agf and agi, to improve the
- * performance of allocation group selection.
- */
-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 */
- bool pagf_agflreset; /* agfl requires reset before use */
- 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;
-
- /*
- * Bitsets of per-ag metadata that have been checked and/or are sick.
- * Callers should hold pag_state_lock before accessing this field.
- */
- uint16_t pag_checked;
- uint16_t pag_sick;
- spinlock_t pag_state_lock;
-
- spinlock_t pagb_lock; /* lock for pagb_tree */
- struct rb_root pagb_tree; /* ordered tree of busy extents */
- unsigned int pagb_gen; /* generation count for pagb_tree */
- wait_queue_head_t pagb_wait; /* woken when pagb_gen changes */
-
- 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 */
- unsigned long pag_ici_reclaim_cursor; /* reclaim restart point */
-
- /* buffer cache index */
- spinlock_t pag_buf_lock; /* lock for pag_buf_hash */
- struct rhashtable pag_buf_hash;
-
- /* for rcu-safe freeing */
- struct rcu_head rcu_head;
- int pagb_count; /* pagb slots in use */
-
- /* Blocks reserved for all kinds of metadata. */
- struct xfs_ag_resv pag_meta_resv;
- /* Blocks reserved for the reverse mapping btree. */
- struct xfs_ag_resv pag_rmapbt_resv;
-
- /* background prealloc block trimming */
- struct delayed_work pag_blockgc_work;
-
- /* reference count */
- uint8_t pagf_refcount_level;
-
- /*
- * Unlinked inode information. This incore information reflects
- * data stored in the AGI, so callers must hold the AGI buffer lock
- * or have some other means to control concurrency.
- */
- struct rhashtable pagi_unlinked_hash;
-} 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_RMAPBT:
- return &pag->pag_rmapbt_resv;
- default:
- return NULL;
- }
-}
-
-int xfs_buf_hash_init(xfs_perag_t *pag);
-void xfs_buf_hash_destroy(xfs_perag_t *pag);
+int xfs_buf_hash_init(struct xfs_perag *pag);
+void xfs_buf_hash_destroy(struct xfs_perag *pag);
extern void xfs_uuid_table_free(void);
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_fdblocks(struct xfs_mount *mp, int64_t delta,