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Viewing changes to include/grub/zfs/dnode.h

  • Committer: Package Import Robot
  • Author(s): Colin Watson
  • Date: 2012-09-13 18:02:04 UTC
  • mfrom: (1.17.15 upstream)
  • mto: (17.6.27 experimental)
  • mto: This revision was merged to the branch mainline in revision 145.
  • Revision ID: package-import@ubuntu.com-20120913180204-mojnmocbimlom4im
Tags: upstream-2.00
Import upstream version 2.00

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include/grub/zfs/dnode.h
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 * Fixed constants.
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 */
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#define DNODE_SHIFT             9       /* 512 bytes */
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#define DN_MIN_INDBLKSHIFT      10      /* 1k */
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#define DN_MAX_INDBLKSHIFT      14      /* 16k */
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#define DNODE_BLOCK_SHIFT       14      /* 16k */
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#define DNODE_CORE_SIZE         64      /* 64 bytes for dnode sans blkptrs */
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#define DN_MAX_OBJECT_SHIFT     48      /* 256 trillion (zfs_fid_t limit) */
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#define DN_MAX_OFFSET_SHIFT     64      /* 2^64 bytes in a dnode */
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/*
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 * Derived constants.
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#define DNODE_SIZE      (1 << DNODE_SHIFT)
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#define DN_MAX_NBLKPTR  ((DNODE_SIZE - DNODE_CORE_SIZE) >> SPA_BLKPTRSHIFT)
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#define DN_MAX_BONUSLEN (DNODE_SIZE - DNODE_CORE_SIZE - (1 << SPA_BLKPTRSHIFT))
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#define DN_MAX_OBJECT   (1ULL << DN_MAX_OBJECT_SHIFT)
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#define DNODES_PER_BLOCK_SHIFT  (DNODE_BLOCK_SHIFT - DNODE_SHIFT)
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#define DNODES_PER_BLOCK        (1ULL << DNODES_PER_BLOCK_SHIFT)
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#define DNODES_PER_LEVEL_SHIFT  (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT)
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#define DNODE_FLAG_SPILL_BLKPTR (1<<2)
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