#define XFS_AGF_NUM_BITS 12
#define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
+#define XFS_AGF_FLAGS \
+ { XFS_AGF_MAGICNUM, "MAGICNUM" }, \
+ { XFS_AGF_VERSIONNUM, "VERSIONNUM" }, \
+ { XFS_AGF_SEQNO, "SEQNO" }, \
+ { XFS_AGF_LENGTH, "LENGTH" }, \
+ { XFS_AGF_ROOTS, "ROOTS" }, \
+ { XFS_AGF_LEVELS, "LEVELS" }, \
+ { XFS_AGF_FLFIRST, "FLFIRST" }, \
+ { XFS_AGF_FLLAST, "FLLAST" }, \
+ { XFS_AGF_FLCOUNT, "FLCOUNT" }, \
+ { XFS_AGF_FREEBLKS, "FREEBLKS" }, \
+ { XFS_AGF_LONGEST, "LONGEST" }, \
+ { XFS_AGF_BTREEBLKS, "BTREEBLKS" }
+
/* disk block (xfs_daddr_t) in the AG */
#define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
/*
* Per-ag incore structure, copies of information in agf and agi,
* to improve the performance of allocation group selection.
- *
- * pick sizes which fit in allocation buckets well
*/
-#if (BITS_PER_LONG == 32)
-#define XFS_PAGB_NUM_SLOTS 84
-#elif (BITS_PER_LONG == 64)
#define XFS_PAGB_NUM_SLOTS 128
-#endif
-typedef struct xfs_perag
-{
+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 */
__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 */
- int pagb_count; /* pagb slots in use */
- xfs_perag_busy_t *pagb_list; /* unstable blocks */
+
+ /*
+ * 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;
#ifdef __KERNEL__
spinlock_t pagb_lock; /* lock for pagb_list */
int pag_ici_init; /* incore inode cache initialised */
rwlock_t pag_ici_lock; /* incore inode lock */
struct radix_tree_root pag_ici_root; /* incore inode cache root */
+ int pag_ici_reclaimable; /* reclaimable inodes */
#endif
+ int pagb_count; /* pagb slots in use */
+ xfs_perag_busy_t pagb_list[XFS_PAGB_NUM_SLOTS]; /* unstable blocks */
} xfs_perag_t;
/*
* tags for inode radix tree
*/
+#define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup
+ in xfs_inode_ag_iterator */
#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels)
be32_to_cpu((a)->agf_levels[XFS_BTNUM_CNTi]), mp))
#define XFS_MIN_FREELIST_PAG(pag,mp) \
(XFS_MIN_FREELIST_RAW( \
- (uint_t)(pag)->pagf_levels[XFS_BTNUM_BNOi], \
- (uint_t)(pag)->pagf_levels[XFS_BTNUM_CNTi], mp))
+ (unsigned int)(pag)->pagf_levels[XFS_BTNUM_BNOi], \
+ (unsigned int)(pag)->pagf_levels[XFS_BTNUM_CNTi], mp))
#define XFS_AGB_TO_FSB(mp,agno,agbno) \
(((xfs_fsblock_t)(agno) << (mp)->m_sb.sb_agblklog) | (agbno))