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Re: [PATCH] xfs: require 64-bit sector_t

To: xfs@xxxxxxxxxxx
Subject: Re: [PATCH] xfs: require 64-bit sector_t
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 16 Jun 2014 07:47:17 -0700
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131210162005.GA32644@xxxxxxxxxxxxx>
References: <20131114164603.GA13628@xxxxxxxxxxxxx> <20131210162005.GA32644@xxxxxxxxxxxxx>
User-agent: Mutt/1.5.23 (2014-03-12)
ping^2

On Tue, Dec 10, 2013 at 08:20:05AM -0800, Christoph Hellwig wrote:
> ping?
> 
> On Thu, Nov 14, 2013 at 08:46:03AM -0800, Christoph Hellwig wrote:
> > Trying to support tiny disks only and saving a bit memory might have
> > made sense on an SGI O2 15 years ago, but is pretty pointless today.
> > 
> > Remove the rarely tested codepath that uses various smaller in-memory
> > types to reduce our test matrix and make the codebase a little bit
> > smaller and less complicated.
> > 
> > 
> > Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> > 
> > diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
> > index 399e8ce..5d47b4d 100644
> > --- a/fs/xfs/Kconfig
> > +++ b/fs/xfs/Kconfig
> > @@ -1,6 +1,7 @@
> >  config XFS_FS
> >     tristate "XFS filesystem support"
> >     depends on BLOCK
> > +   depends on (64BIT || LBDAF)
> >     select EXPORTFS
> >     select LIBCRC32C
> >     help
> > diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
> > index 1c02da8..b0eccfc 100644
> > --- a/fs/xfs/xfs_bmap.c
> > +++ b/fs/xfs/xfs_bmap.c
> > @@ -393,7 +393,7 @@ xfs_bmap_check_leaf_extents(
> >     pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
> >     bno = be64_to_cpu(*pp);
> >  
> > -   ASSERT(bno != NULLDFSBNO);
> > +   ASSERT(bno != NULLFSBLOCK);
> >     ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
> >     ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
> >  
> > @@ -1295,7 +1295,7 @@ xfs_bmap_read_extents(
> >     ASSERT(level > 0);
> >     pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
> >     bno = be64_to_cpu(*pp);
> > -   ASSERT(bno != NULLDFSBNO);
> > +   ASSERT(bno != NULLFSBLOCK);
> >     ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
> >     ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
> >     /*
> > @@ -1425,11 +1425,7 @@ xfs_bmap_search_multi_extents(
> >     gotp->br_startoff = 0xffa5a5a5a5a5a5a5LL;
> >     gotp->br_blockcount = 0xa55a5a5a5a5a5a5aLL;
> >     gotp->br_state = XFS_EXT_INVALID;
> > -#if XFS_BIG_BLKNOS
> >     gotp->br_startblock = 0xffffa5a5a5a5a5a5LL;
> > -#else
> > -   gotp->br_startblock = 0xffffa5a5;
> > -#endif
> >     prevp->br_startoff = NULLFILEOFF;
> >  
> >     ep = xfs_iext_bno_to_ext(ifp, bno, &lastx);
> > diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
> > index 706bc3f..9c05b00 100644
> > --- a/fs/xfs/xfs_bmap_btree.c
> > +++ b/fs/xfs/xfs_bmap_btree.c
> > @@ -111,23 +111,8 @@ __xfs_bmbt_get_all(
> >     ext_flag = (int)(l0 >> (64 - BMBT_EXNTFLAG_BITLEN));
> >     s->br_startoff = ((xfs_fileoff_t)l0 &
> >                        xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN)) >> 9;
> > -#if XFS_BIG_BLKNOS
> >     s->br_startblock = (((xfs_fsblock_t)l0 & xfs_mask64lo(9)) << 43) |
> >                        (((xfs_fsblock_t)l1) >> 21);
> > -#else
> > -#ifdef DEBUG
> > -   {
> > -           xfs_dfsbno_t    b;
> > -
> > -           b = (((xfs_dfsbno_t)l0 & xfs_mask64lo(9)) << 43) |
> > -               (((xfs_dfsbno_t)l1) >> 21);
> > -           ASSERT((b >> 32) == 0 || isnulldstartblock(b));
> > -           s->br_startblock = (xfs_fsblock_t)b;
> > -   }
> > -#else      /* !DEBUG */
> > -   s->br_startblock = (xfs_fsblock_t)(((xfs_dfsbno_t)l1) >> 21);
> > -#endif     /* DEBUG */
> > -#endif     /* XFS_BIG_BLKNOS */
> >     s->br_blockcount = (xfs_filblks_t)(l1 & xfs_mask64lo(21));
> >     /* This is xfs_extent_state() in-line */
> >     if (ext_flag) {
> > @@ -163,21 +148,8 @@ xfs_fsblock_t
> >  xfs_bmbt_get_startblock(
> >     xfs_bmbt_rec_host_t     *r)
> >  {
> > -#if XFS_BIG_BLKNOS
> >     return (((xfs_fsblock_t)r->l0 & xfs_mask64lo(9)) << 43) |
> >            (((xfs_fsblock_t)r->l1) >> 21);
> > -#else
> > -#ifdef DEBUG
> > -   xfs_dfsbno_t    b;
> > -
> > -   b = (((xfs_dfsbno_t)r->l0 & xfs_mask64lo(9)) << 43) |
> > -       (((xfs_dfsbno_t)r->l1) >> 21);
> > -   ASSERT((b >> 32) == 0 || isnulldstartblock(b));
> > -   return (xfs_fsblock_t)b;
> > -#else      /* !DEBUG */
> > -   return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21);
> > -#endif     /* DEBUG */
> > -#endif     /* XFS_BIG_BLKNOS */
> >  }
> >  
> >  /*
> > @@ -241,7 +213,6 @@ xfs_bmbt_set_allf(
> >     ASSERT((startoff & xfs_mask64hi(64-BMBT_STARTOFF_BITLEN)) == 0);
> >     ASSERT((blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)) == 0);
> >  
> > -#if XFS_BIG_BLKNOS
> >     ASSERT((startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)) == 0);
> >  
> >     r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) |
> > @@ -250,23 +221,6 @@ xfs_bmbt_set_allf(
> >     r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) |
> >             ((xfs_bmbt_rec_base_t)blockcount &
> >             (xfs_bmbt_rec_base_t)xfs_mask64lo(21));
> > -#else      /* !XFS_BIG_BLKNOS */
> > -   if (isnullstartblock(startblock)) {
> > -           r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) |
> > -                   ((xfs_bmbt_rec_base_t)startoff << 9) |
> > -                    (xfs_bmbt_rec_base_t)xfs_mask64lo(9);
> > -           r->l1 = xfs_mask64hi(11) |
> > -                     ((xfs_bmbt_rec_base_t)startblock << 21) |
> > -                     ((xfs_bmbt_rec_base_t)blockcount &
> > -                      (xfs_bmbt_rec_base_t)xfs_mask64lo(21));
> > -   } else {
> > -           r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) |
> > -                   ((xfs_bmbt_rec_base_t)startoff << 9);
> > -           r->l1 = ((xfs_bmbt_rec_base_t)startblock << 21) |
> > -                    ((xfs_bmbt_rec_base_t)blockcount &
> > -                    (xfs_bmbt_rec_base_t)xfs_mask64lo(21));
> > -   }
> > -#endif     /* XFS_BIG_BLKNOS */
> >  }
> >  
> >  /*
> > @@ -298,8 +252,6 @@ xfs_bmbt_disk_set_allf(
> >     ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN);
> >     ASSERT((startoff & xfs_mask64hi(64-BMBT_STARTOFF_BITLEN)) == 0);
> >     ASSERT((blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)) == 0);
> > -
> > -#if XFS_BIG_BLKNOS
> >     ASSERT((startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)) == 0);
> >  
> >     r->l0 = cpu_to_be64(
> > @@ -310,26 +262,6 @@ xfs_bmbt_disk_set_allf(
> >             ((xfs_bmbt_rec_base_t)startblock << 21) |
> >              ((xfs_bmbt_rec_base_t)blockcount &
> >               (xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
> > -#else      /* !XFS_BIG_BLKNOS */
> > -   if (isnullstartblock(startblock)) {
> > -           r->l0 = cpu_to_be64(
> > -                   ((xfs_bmbt_rec_base_t)extent_flag << 63) |
> > -                    ((xfs_bmbt_rec_base_t)startoff << 9) |
> > -                     (xfs_bmbt_rec_base_t)xfs_mask64lo(9));
> > -           r->l1 = cpu_to_be64(xfs_mask64hi(11) |
> > -                     ((xfs_bmbt_rec_base_t)startblock << 21) |
> > -                     ((xfs_bmbt_rec_base_t)blockcount &
> > -                      (xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
> > -   } else {
> > -           r->l0 = cpu_to_be64(
> > -                   ((xfs_bmbt_rec_base_t)extent_flag << 63) |
> > -                    ((xfs_bmbt_rec_base_t)startoff << 9));
> > -           r->l1 = cpu_to_be64(
> > -                   ((xfs_bmbt_rec_base_t)startblock << 21) |
> > -                    ((xfs_bmbt_rec_base_t)blockcount &
> > -                     (xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
> > -   }
> > -#endif     /* XFS_BIG_BLKNOS */
> >  }
> >  
> >  /*
> > @@ -365,24 +297,11 @@ xfs_bmbt_set_startblock(
> >     xfs_bmbt_rec_host_t *r,
> >     xfs_fsblock_t   v)
> >  {
> > -#if XFS_BIG_BLKNOS
> >     ASSERT((v & xfs_mask64hi(12)) == 0);
> >     r->l0 = (r->l0 & (xfs_bmbt_rec_base_t)xfs_mask64hi(55)) |
> >               (xfs_bmbt_rec_base_t)(v >> 43);
> >     r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21)) |
> >               (xfs_bmbt_rec_base_t)(v << 21);
> > -#else      /* !XFS_BIG_BLKNOS */
> > -   if (isnullstartblock(v)) {
> > -           r->l0 |= (xfs_bmbt_rec_base_t)xfs_mask64lo(9);
> > -           r->l1 = (xfs_bmbt_rec_base_t)xfs_mask64hi(11) |
> > -                     ((xfs_bmbt_rec_base_t)v << 21) |
> > -                     (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21));
> > -   } else {
> > -           r->l0 &= ~(xfs_bmbt_rec_base_t)xfs_mask64lo(9);
> > -           r->l1 = ((xfs_bmbt_rec_base_t)v << 21) |
> > -                     (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21));
> > -   }
> > -#endif     /* XFS_BIG_BLKNOS */
> >  }
> >  
> >  /*
> > @@ -438,8 +357,8 @@ xfs_bmbt_to_bmdr(
> >                    cpu_to_be64(XFS_BUF_DADDR_NULL));
> >     } else
> >             ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC));
> > -   ASSERT(rblock->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO));
> > -   ASSERT(rblock->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO));
> > +   ASSERT(rblock->bb_u.l.bb_leftsib == cpu_to_be64(NULLFSBLOCK));
> > +   ASSERT(rblock->bb_u.l.bb_rightsib == cpu_to_be64(NULLFSBLOCK));
> >     ASSERT(rblock->bb_level != 0);
> >     dblock->bb_level = rblock->bb_level;
> >     dblock->bb_numrecs = rblock->bb_numrecs;
> > @@ -765,11 +684,11 @@ xfs_bmbt_verify(
> >  
> >     /* sibling pointer verification */
> >     if (!block->bb_u.l.bb_leftsib ||
> > -       (block->bb_u.l.bb_leftsib != cpu_to_be64(NULLDFSBNO) &&
> > +       (block->bb_u.l.bb_leftsib != cpu_to_be64(NULLFSBLOCK) &&
> >          !XFS_FSB_SANITY_CHECK(mp, be64_to_cpu(block->bb_u.l.bb_leftsib))))
> >             return false;
> >     if (!block->bb_u.l.bb_rightsib ||
> > -       (block->bb_u.l.bb_rightsib != cpu_to_be64(NULLDFSBNO) &&
> > +       (block->bb_u.l.bb_rightsib != cpu_to_be64(NULLFSBLOCK) &&
> >          !XFS_FSB_SANITY_CHECK(mp, be64_to_cpu(block->bb_u.l.bb_rightsib))))
> >             return false;
> >  
> > diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
> > index 5887e41..699776e 100644
> > --- a/fs/xfs/xfs_bmap_util.c
> > +++ b/fs/xfs/xfs_bmap_util.c
> > @@ -467,7 +467,7 @@ xfs_bmap_count_blocks(
> >     ASSERT(level > 0);
> >     pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
> >     bno = be64_to_cpu(*pp);
> > -   ASSERT(bno != NULLDFSBNO);
> > +   ASSERT(bno != NULLFSBLOCK);
> >     ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
> >     ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
> >  
> > diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
> > index 9adaae4..6f217a5 100644
> > --- a/fs/xfs/xfs_btree.c
> > +++ b/fs/xfs/xfs_btree.c
> > @@ -76,11 +76,11 @@ xfs_btree_check_lblock(
> >             be16_to_cpu(block->bb_numrecs) <=
> >                     cur->bc_ops->get_maxrecs(cur, level) &&
> >             block->bb_u.l.bb_leftsib &&
> > -           (block->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO) ||
> > +           (block->bb_u.l.bb_leftsib == cpu_to_be64(NULLFSBLOCK) ||
> >              XFS_FSB_SANITY_CHECK(mp,
> >                     be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
> >             block->bb_u.l.bb_rightsib &&
> > -           (block->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO) ||
> > +           (block->bb_u.l.bb_rightsib == cpu_to_be64(NULLFSBLOCK) ||
> >              XFS_FSB_SANITY_CHECK(mp,
> >                     be64_to_cpu(block->bb_u.l.bb_rightsib)));
> >  
> > @@ -165,12 +165,12 @@ xfs_btree_check_block(
> >  int                                        /* error (0 or EFSCORRUPTED) */
> >  xfs_btree_check_lptr(
> >     struct xfs_btree_cur    *cur,   /* btree cursor */
> > -   xfs_dfsbno_t            bno,    /* btree block disk address */
> > +   xfs_fsblock_t           bno,    /* btree block disk address */
> >     int                     level)  /* btree block level */
> >  {
> >     XFS_WANT_CORRUPTED_RETURN(
> >             level > 0 &&
> > -           bno != NULLDFSBNO &&
> > +           bno != NULLFSBLOCK &&
> >             XFS_FSB_SANITY_CHECK(cur->bc_mp, bno));
> >     return 0;
> >  }
> > @@ -601,7 +601,7 @@ xfs_btree_islastblock(
> >     block = xfs_btree_get_block(cur, level, &bp);
> >     xfs_btree_check_block(cur, block, level, bp);
> >     if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
> > -           return block->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO);
> > +           return block->bb_u.l.bb_rightsib == cpu_to_be64(NULLFSBLOCK);
> >     else
> >             return block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK);
> >  }
> > @@ -778,16 +778,16 @@ xfs_btree_readahead_lblock(
> >     struct xfs_btree_block  *block)
> >  {
> >     int                     rval = 0;
> > -   xfs_dfsbno_t            left = be64_to_cpu(block->bb_u.l.bb_leftsib);
> > -   xfs_dfsbno_t            right = be64_to_cpu(block->bb_u.l.bb_rightsib);
> > +   xfs_fsblock_t           left = be64_to_cpu(block->bb_u.l.bb_leftsib);
> > +   xfs_fsblock_t           right = be64_to_cpu(block->bb_u.l.bb_rightsib);
> >  
> > -   if ((lr & XFS_BTCUR_LEFTRA) && left != NULLDFSBNO) {
> > +   if ((lr & XFS_BTCUR_LEFTRA) && left != NULLFSBLOCK) {
> >             xfs_btree_reada_bufl(cur->bc_mp, left, 1,
> >                                  cur->bc_ops->buf_ops);
> >             rval++;
> >     }
> >  
> > -   if ((lr & XFS_BTCUR_RIGHTRA) && right != NULLDFSBNO) {
> > +   if ((lr & XFS_BTCUR_RIGHTRA) && right != NULLFSBLOCK) {
> >             xfs_btree_reada_bufl(cur->bc_mp, right, 1,
> >                                  cur->bc_ops->buf_ops);
> >             rval++;
> > @@ -859,7 +859,7 @@ xfs_btree_ptr_to_daddr(
> >     union xfs_btree_ptr     *ptr)
> >  {
> >     if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
> > -           ASSERT(ptr->l != cpu_to_be64(NULLDFSBNO));
> > +           ASSERT(ptr->l != cpu_to_be64(NULLFSBLOCK));
> >  
> >             return XFS_FSB_TO_DADDR(cur->bc_mp, be64_to_cpu(ptr->l));
> >     } else {
> > @@ -907,9 +907,9 @@ xfs_btree_setbuf(
> >  
> >     b = XFS_BUF_TO_BLOCK(bp);
> >     if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
> > -           if (b->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO))
> > +           if (b->bb_u.l.bb_leftsib == cpu_to_be64(NULLFSBLOCK))
> >                     cur->bc_ra[lev] |= XFS_BTCUR_LEFTRA;
> > -           if (b->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO))
> > +           if (b->bb_u.l.bb_rightsib == cpu_to_be64(NULLFSBLOCK))
> >                     cur->bc_ra[lev] |= XFS_BTCUR_RIGHTRA;
> >     } else {
> >             if (b->bb_u.s.bb_leftsib == cpu_to_be32(NULLAGBLOCK))
> > @@ -925,7 +925,7 @@ xfs_btree_ptr_is_null(
> >     union xfs_btree_ptr     *ptr)
> >  {
> >     if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
> > -           return ptr->l == cpu_to_be64(NULLDFSBNO);
> > +           return ptr->l == cpu_to_be64(NULLFSBLOCK);
> >     else
> >             return ptr->s == cpu_to_be32(NULLAGBLOCK);
> >  }
> > @@ -936,7 +936,7 @@ xfs_btree_set_ptr_null(
> >     union xfs_btree_ptr     *ptr)
> >  {
> >     if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
> > -           ptr->l = cpu_to_be64(NULLDFSBNO);
> > +           ptr->l = cpu_to_be64(NULLFSBLOCK);
> >     else
> >             ptr->s = cpu_to_be32(NULLAGBLOCK);
> >  }
> > @@ -1004,8 +1004,8 @@ xfs_btree_init_block_int(
> >     buf->bb_numrecs = cpu_to_be16(numrecs);
> >  
> >     if (flags & XFS_BTREE_LONG_PTRS) {
> > -           buf->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
> > -           buf->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
> > +           buf->bb_u.l.bb_leftsib = cpu_to_be64(NULLFSBLOCK);
> > +           buf->bb_u.l.bb_rightsib = cpu_to_be64(NULLFSBLOCK);
> >             if (flags & XFS_BTREE_CRC_BLOCKS) {
> >                     buf->bb_u.l.bb_blkno = cpu_to_be64(blkno);
> >                     buf->bb_u.l.bb_owner = cpu_to_be64(owner);
> > diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
> > index 91e34f2..a5f0ee7 100644
> > --- a/fs/xfs/xfs_btree.h
> > +++ b/fs/xfs/xfs_btree.h
> > @@ -255,7 +255,7 @@ xfs_btree_check_block(
> >  int                                        /* error (0 or EFSCORRUPTED) */
> >  xfs_btree_check_lptr(
> >     struct xfs_btree_cur    *cur,   /* btree cursor */
> > -   xfs_dfsbno_t            ptr,    /* btree block disk address */
> > +   xfs_fsblock_t           ptr,    /* btree block disk address */
> >     int                     level); /* btree block level */
> >  
> >  /*
> > diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
> > index 796272a..6ea2c63 100644
> > --- a/fs/xfs/xfs_da_btree.c
> > +++ b/fs/xfs/xfs_da_btree.c
> > @@ -2002,7 +2002,7 @@ xfs_da_grow_inode_int(
> >     struct xfs_trans        *tp = args->trans;
> >     struct xfs_inode        *dp = args->dp;
> >     int                     w = args->whichfork;
> > -   xfs_drfsbno_t           nblks = dp->i_d.di_nblocks;
> > +   xfs_rfsblock_t          nblks = dp->i_d.di_nblocks;
> >     struct xfs_bmbt_irec    map, *mapp;
> >     int                     nmap, error, got, i, mapi;
> >  
> > diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c
> > index aafc6e4..411407d 100644
> > --- a/fs/xfs/xfs_dir2_sf.c
> > +++ b/fs/xfs/xfs_dir2_sf.c
> > @@ -51,10 +51,9 @@ static void xfs_dir2_sf_check(xfs_da_args_t *args);
> >  #else
> >  #define    xfs_dir2_sf_check(args)
> >  #endif /* DEBUG */
> > -#if XFS_BIG_INUMS
> > +
> >  static void xfs_dir2_sf_toino4(xfs_da_args_t *args);
> >  static void xfs_dir2_sf_toino8(xfs_da_args_t *args);
> > -#endif /* XFS_BIG_INUMS */
> >  
> >  /*
> >   * Given a block directory (dp/block), calculate its size as a shortform 
> > (sf)
> > @@ -115,10 +114,10 @@ xfs_dir2_block_sfsize(
> >             isdotdot =
> >                     dep->namelen == 2 &&
> >                     dep->name[0] == '.' && dep->name[1] == '.';
> > -#if XFS_BIG_INUMS
> > +
> >             if (!isdot)
> >                     i8count += be64_to_cpu(dep->inumber) > 
> > XFS_DIR2_MAX_SHORT_INUM;
> > -#endif
> > +
> >             /* take into account the file type field */
> >             if (!isdot && !isdotdot) {
> >                     count++;
> > @@ -309,7 +308,7 @@ xfs_dir2_sf_addname(
> >     add_entsize = dp->d_ops->sf_entsize(sfp, args->namelen);
> >     incr_isize = add_entsize;
> >     objchange = 0;
> > -#if XFS_BIG_INUMS
> > +
> >     /*
> >      * Do we have to change to 8 byte inodes?
> >      */
> > @@ -326,7 +325,7 @@ xfs_dir2_sf_addname(
> >                      (uint)sizeof(xfs_dir2_ino4_t));
> >             objchange = 1;
> >     }
> > -#endif
> > +
> >     old_isize = (int)dp->i_d.di_size;
> >     new_isize = old_isize + incr_isize;
> >     /*
> > @@ -365,10 +364,8 @@ xfs_dir2_sf_addname(
> >      */
> >     else {
> >             ASSERT(pick == 2);
> > -#if XFS_BIG_INUMS
> >             if (objchange)
> >                     xfs_dir2_sf_toino8(args);
> > -#endif
> >             xfs_dir2_sf_addname_hard(args, objchange, new_isize);
> >     }
> >     xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
> > @@ -420,10 +417,8 @@ xfs_dir2_sf_addname_easy(
> >      * Update the header and inode.
> >      */
> >     sfp->count++;
> > -#if XFS_BIG_INUMS
> >     if (args->inumber > XFS_DIR2_MAX_SHORT_INUM)
> >             sfp->i8count++;
> > -#endif
> >     dp->i_d.di_size = new_isize;
> >     xfs_dir2_sf_check(args);
> >  }
> > @@ -511,10 +506,8 @@ xfs_dir2_sf_addname_hard(
> >     dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
> >     dp->d_ops->sf_put_ftype(sfep, args->filetype);
> >     sfp->count++;
> > -#if XFS_BIG_INUMS
> >     if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange)
> >             sfp->i8count++;
> > -#endif
> >     /*
> >      * If there's more left to copy, do that.
> >      */
> > @@ -588,13 +581,8 @@ xfs_dir2_sf_addname_pick(
> >     /*
> >      * If changing the inode number size, do it the hard way.
> >      */
> > -#if XFS_BIG_INUMS
> > -   if (objchange) {
> > +   if (objchange)
> >             return 2;
> > -   }
> > -#else
> > -   ASSERT(objchange == 0);
> > -#endif
> >     /*
> >      * If it won't fit at the end then do it the hard way (use the hole).
> >      */
> > @@ -645,7 +633,6 @@ xfs_dir2_sf_check(
> >             ASSERT(dp->d_ops->sf_get_ftype(sfep) < XFS_DIR3_FT_MAX);
> >     }
> >     ASSERT(i8count == sfp->i8count);
> > -   ASSERT(XFS_BIG_INUMS || i8count == 0);
> >     ASSERT((char *)sfep - (char *)sfp == dp->i_d.di_size);
> >     ASSERT(offset +
> >            (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t) +
> > @@ -865,7 +852,6 @@ xfs_dir2_sf_removename(
> >      */
> >     xfs_idata_realloc(dp, newsize - oldsize, XFS_DATA_FORK);
> >     sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
> > -#if XFS_BIG_INUMS
> >     /*
> >      * Are we changing inode number size?
> >      */
> > @@ -875,7 +861,6 @@ xfs_dir2_sf_removename(
> >             else
> >                     sfp->i8count--;
> >     }
> > -#endif
> >     xfs_dir2_sf_check(args);
> >     xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
> >     return 0;
> > @@ -890,12 +875,8 @@ xfs_dir2_sf_replace(
> >  {
> >     xfs_inode_t             *dp;            /* incore directory inode */
> >     int                     i;              /* entry index */
> > -#if XFS_BIG_INUMS || defined(DEBUG)
> >     xfs_ino_t               ino=0;          /* entry old inode number */
> > -#endif
> > -#if XFS_BIG_INUMS
> >     int                     i8elevated;     /* sf_toino8 set i8count=1 */
> > -#endif
> >     xfs_dir2_sf_entry_t     *sfep;          /* shortform directory entry */
> >     xfs_dir2_sf_hdr_t       *sfp;           /* shortform structure */
> >  
> > @@ -915,7 +896,7 @@ xfs_dir2_sf_replace(
> >     ASSERT(dp->i_df.if_u1.if_data != NULL);
> >     sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
> >     ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count));
> > -#if XFS_BIG_INUMS
> > +
> >     /*
> >      * New inode number is large, and need to convert to 8-byte inodes.
> >      */
> > @@ -946,17 +927,15 @@ xfs_dir2_sf_replace(
> >             sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
> >     } else
> >             i8elevated = 0;
> > -#endif
> > +
> >     ASSERT(args->namelen != 1 || args->name[0] != '.');
> >     /*
> >      * Replace ..'s entry.
> >      */
> >     if (args->namelen == 2 &&
> >         args->name[0] == '.' && args->name[1] == '.') {
> > -#if XFS_BIG_INUMS || defined(DEBUG)
> >             ino = dp->d_ops->sf_get_parent_ino(sfp);
> >             ASSERT(args->inumber != ino);
> > -#endif
> >             dp->d_ops->sf_put_parent_ino(sfp, args->inumber);
> >     }
> >     /*
> > @@ -967,10 +946,8 @@ xfs_dir2_sf_replace(
> >                  i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) {
> >                     if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
> >                                                             XFS_CMP_EXACT) {
> > -#if XFS_BIG_INUMS || defined(DEBUG)
> >                             ino = dp->d_ops->sf_get_ino(sfp, sfep);
> >                             ASSERT(args->inumber != ino);
> > -#endif
> >                             dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
> >                             dp->d_ops->sf_put_ftype(sfep, args->filetype);
> >                             break;
> > @@ -981,14 +958,11 @@ xfs_dir2_sf_replace(
> >              */
> >             if (i == sfp->count) {
> >                     ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
> > -#if XFS_BIG_INUMS
> >                     if (i8elevated)
> >                             xfs_dir2_sf_toino4(args);
> > -#endif
> >                     return XFS_ERROR(ENOENT);
> >             }
> >     }
> > -#if XFS_BIG_INUMS
> >     /*
> >      * See if the old number was large, the new number is small.
> >      */
> > @@ -1015,13 +989,11 @@ xfs_dir2_sf_replace(
> >             if (!i8elevated)
> >                     sfp->i8count++;
> >     }
> > -#endif
> >     xfs_dir2_sf_check(args);
> >     xfs_trans_log_inode(args->trans, dp, XFS_ILOG_DDATA);
> >     return 0;
> >  }
> >  
> > -#if XFS_BIG_INUMS
> >  /*
> >   * Convert from 8-byte inode numbers to 4-byte inode numbers.
> >   * The last 8-byte inode number is gone, but the count is still 1.
> > @@ -1176,4 +1148,3 @@ xfs_dir2_sf_toino8(
> >     dp->i_d.di_size = newsize;
> >     xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
> >  }
> > -#endif     /* XFS_BIG_INUMS */
> > diff --git a/fs/xfs/xfs_format.h b/fs/xfs/xfs_format.h
> > index b6ab5a3..e6b8f7d 100644
> > --- a/fs/xfs/xfs_format.h
> > +++ b/fs/xfs/xfs_format.h
> > @@ -68,11 +68,7 @@ struct xfs_ifork;
> >  #define    XFS_RTLOBIT(w)  xfs_lowbit32(w)
> >  #define    XFS_RTHIBIT(w)  xfs_highbit32(w)
> >  
> > -#if XFS_BIG_BLKNOS
> >  #define    XFS_RTBLOCKLOG(b)       xfs_highbit64(b)
> > -#else
> > -#define    XFS_RTBLOCKLOG(b)       xfs_highbit32(b)
> > -#endif
> >  
> >  /*
> >   * Dquot and dquot block format definitions
> > @@ -290,23 +286,15 @@ typedef struct xfs_bmbt_rec_host {
> >   * Values and macros for delayed-allocation startblock fields.
> >   */
> >  #define STARTBLOCKVALBITS  17
> > -#define STARTBLOCKMASKBITS (15 + XFS_BIG_BLKNOS * 20)
> > -#define DSTARTBLOCKMASKBITS        (15 + 20)
> > +#define STARTBLOCKMASKBITS (15 + 20)
> >  #define STARTBLOCKMASK             \
> >     (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
> > -#define DSTARTBLOCKMASK            \
> > -   (((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
> >  
> >  static inline int isnullstartblock(xfs_fsblock_t x)
> >  {
> >     return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
> >  }
> >  
> > -static inline int isnulldstartblock(xfs_dfsbno_t x)
> > -{
> > -   return ((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK;
> > -}
> > -
> >  static inline xfs_fsblock_t nullstartblock(int k)
> >  {
> >     ASSERT(k < (1 << STARTBLOCKVALBITS));
> > diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
> > index c5fc116..7e907f2 100644
> > --- a/fs/xfs/xfs_fs.h
> > +++ b/fs/xfs/xfs_fs.h
> > @@ -254,8 +254,8 @@ typedef struct xfs_fsop_resblks {
> >     ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
> >  
> >  /* Used for sanity checks on superblock */
> > -#define XFS_MAX_DBLOCKS(s) ((xfs_drfsbno_t)(s)->sb_agcount * 
> > (s)->sb_agblocks)
> > -#define XFS_MIN_DBLOCKS(s) ((xfs_drfsbno_t)((s)->sb_agcount - 1) * \
> > +#define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * 
> > (s)->sb_agblocks)
> > +#define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *        
> > \
> >                      (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
> >  
> >  /*
> > diff --git a/fs/xfs/xfs_inode_fork.c b/fs/xfs/xfs_inode_fork.c
> > index cfee14a..cb2677c 100644
> > --- a/fs/xfs/xfs_inode_fork.c
> > +++ b/fs/xfs/xfs_inode_fork.c
> > @@ -526,7 +526,7 @@ xfs_iroot_realloc(
> >             ifp->if_broot_bytes = (int)new_size;
> >             ASSERT(XFS_BMAP_BMDR_SPACE(ifp->if_broot) <=
> >                     XFS_IFORK_SIZE(ip, whichfork));
> > -           memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t));
> > +           memmove(np, op, cur_max * (uint)sizeof(xfs_fsblock_t));
> >             return;
> >     }
> >  
> > @@ -573,7 +573,7 @@ xfs_iroot_realloc(
> >                                                  ifp->if_broot_bytes);
> >             np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, new_broot, 1,
> >                                                  (int)new_size);
> > -           memcpy(np, op, new_max * (uint)sizeof(xfs_dfsbno_t));
> > +           memcpy(np, op, new_max * (uint)sizeof(xfs_fsblock_t));
> >     }
> >     kmem_free(ifp->if_broot);
> >     ifp->if_broot = new_broot;
> > diff --git a/fs/xfs/xfs_inum.h b/fs/xfs/xfs_inum.h
> > index 90efdaf..4ff2278 100644
> > --- a/fs/xfs/xfs_inum.h
> > +++ b/fs/xfs/xfs_inum.h
> > @@ -54,11 +54,7 @@ struct xfs_mount;
> >  #define    XFS_OFFBNO_TO_AGINO(mp,b,o)     \
> >     ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o)))
> >  
> > -#if XFS_BIG_INUMS
> >  #define    XFS_MAXINUMBER          ((xfs_ino_t)((1ULL << 56) - 1ULL))
> > -#else
> > -#define    XFS_MAXINUMBER          ((xfs_ino_t)((1ULL << 32) - 1ULL))
> > -#endif
> >  #define    XFS_MAXINUMBER_32       ((xfs_ino_t)((1ULL << 32) - 1ULL))
> >  
> >  #endif     /* __XFS_INUM_H__ */
> > diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
> > index f9bb590..9dc1349 100644
> > --- a/fs/xfs/xfs_linux.h
> > +++ b/fs/xfs/xfs_linux.h
> > @@ -21,18 +21,6 @@
> >  #include <linux/types.h>
> >  
> >  /*
> > - * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits.
> > - * XFS_BIG_INUMS requires XFS_BIG_BLKNOS to be set.
> > - */
> > -#if defined(CONFIG_LBDAF) || (BITS_PER_LONG == 64)
> > -# define XFS_BIG_BLKNOS    1
> > -# define XFS_BIG_INUMS     1
> > -#else
> > -# define XFS_BIG_BLKNOS    0
> > -# define XFS_BIG_INUMS     0
> > -#endif
> > -
> > -/*
> >   * Kernel specific type declarations for XFS
> >   */
> >  typedef signed char                __int8_t;
> > diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h
> > index f0969c7..aff12f2 100644
> > --- a/fs/xfs/xfs_log_format.h
> > +++ b/fs/xfs/xfs_log_format.h
> > @@ -380,7 +380,7 @@ typedef struct xfs_icdinode {
> >     xfs_ictimestamp_t di_mtime;     /* time last modified */
> >     xfs_ictimestamp_t di_ctime;     /* time created/inode modified */
> >     xfs_fsize_t     di_size;        /* number of bytes in file */
> > -   xfs_drfsbno_t   di_nblocks;     /* # of direct & btree blocks used */
> > +   xfs_rfsblock_t  di_nblocks;     /* # of direct & btree blocks used */
> >     xfs_extlen_t    di_extsize;     /* basic/minimum extent size for file */
> >     xfs_extnum_t    di_nextents;    /* number of extents in data fork */
> >     xfs_aextnum_t   di_anextents;   /* number of extents in attribute fork*/
> > @@ -516,7 +516,7 @@ xfs_blft_from_flags(struct xfs_buf_log_format *blf)
> >   * EFI/EFD log format definitions
> >   */
> >  typedef struct xfs_extent {
> > -   xfs_dfsbno_t    ext_start;
> > +   xfs_fsblock_t   ext_start;
> >     xfs_extlen_t    ext_len;
> >  } xfs_extent_t;
> >  
> > diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
> > index da88f16..1053aa2 100644
> > --- a/fs/xfs/xfs_mount.c
> > +++ b/fs/xfs/xfs_mount.c
> > @@ -172,13 +172,9 @@ xfs_sb_validate_fsb_count(
> >     ASSERT(PAGE_SHIFT >= sbp->sb_blocklog);
> >     ASSERT(sbp->sb_blocklog >= BBSHIFT);
> >  
> > -#if XFS_BIG_BLKNOS     /* Limited by ULONG_MAX of page cache index */
> > +   /* Limited by ULONG_MAX of page cache index */
> >     if (nblocks >> (PAGE_CACHE_SHIFT - sbp->sb_blocklog) > ULONG_MAX)
> >             return EFBIG;
> > -#else                  /* Limited by UINT_MAX of sectors */
> > -   if (nblocks << (sbp->sb_blocklog - BBSHIFT) > UINT_MAX)
> > -           return EFBIG;
> > -#endif
> >     return 0;
> >  }
> >  
> > diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
> > index a6a76b2..4176e8d 100644
> > --- a/fs/xfs/xfs_rtalloc.c
> > +++ b/fs/xfs/xfs_rtalloc.c
> > @@ -944,9 +944,9 @@ xfs_growfs_rt(
> >     xfs_buf_t       *bp;            /* temporary buffer */
> >     int             error;          /* error return value */
> >     xfs_mount_t     *nmp;           /* new (fake) mount structure */
> > -   xfs_drfsbno_t   nrblocks;       /* new number of realtime blocks */
> > +   xfs_rfsblock_t  nrblocks;       /* new number of realtime blocks */
> >     xfs_extlen_t    nrbmblocks;     /* new number of rt bitmap blocks */
> > -   xfs_drtbno_t    nrextents;      /* new number of realtime extents */
> > +   xfs_rtblock_t   nrextents;      /* new number of realtime extents */
> >     uint8_t         nrextslog;      /* new log2 of sb_rextents */
> >     xfs_extlen_t    nrsumblocks;    /* new number of summary blocks */
> >     uint            nrsumlevels;    /* new rt summary levels */
> > diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h
> > index 35061d4..c24a9ab 100644
> > --- a/fs/xfs/xfs_sb.h
> > +++ b/fs/xfs/xfs_sb.h
> > @@ -104,11 +104,11 @@ struct xfs_trans;
> >  typedef struct xfs_sb {
> >     __uint32_t      sb_magicnum;    /* magic number == XFS_SB_MAGIC */
> >     __uint32_t      sb_blocksize;   /* logical block size, bytes */
> > -   xfs_drfsbno_t   sb_dblocks;     /* number of data blocks */
> > -   xfs_drfsbno_t   sb_rblocks;     /* number of realtime blocks */
> > -   xfs_drtbno_t    sb_rextents;    /* number of realtime extents */
> > +   xfs_rfsblock_t  sb_dblocks;     /* number of data blocks */
> > +   xfs_rfsblock_t  sb_rblocks;     /* number of realtime blocks */
> > +   xfs_rtblock_t   sb_rextents;    /* number of realtime extents */
> >     uuid_t          sb_uuid;        /* file system unique id */
> > -   xfs_dfsbno_t    sb_logstart;    /* starting block of log if internal */
> > +   xfs_fsblock_t   sb_logstart;    /* starting block of log if internal */
> >     xfs_ino_t       sb_rootino;     /* root inode number */
> >     xfs_ino_t       sb_rbmino;      /* bitmap inode for realtime extents */
> >     xfs_ino_t       sb_rsumino;     /* summary inode for rt bitmap */
> > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
> > index d971f49..0eeb30c 100644
> > --- a/fs/xfs/xfs_super.c
> > +++ b/fs/xfs/xfs_super.c
> > @@ -204,9 +204,6 @@ xfs_parseargs(
> >      */
> >     mp->m_flags |= XFS_MOUNT_BARRIER;
> >     mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
> > -#if !XFS_BIG_INUMS
> > -   mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
> > -#endif
> >  
> >     /*
> >      * These can be overridden by the mount option parsing.
> > @@ -313,11 +310,6 @@ xfs_parseargs(
> >                     mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
> >             } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
> >                     mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
> > -#if !XFS_BIG_INUMS
> > -                   xfs_warn(mp, "%s option not allowed on this system",
> > -                           this_char);
> > -                   return EINVAL;
> > -#endif
> >             } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
> >                     mp->m_flags |= XFS_MOUNT_NOUUID;
> >             } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
> > diff --git a/fs/xfs/xfs_super.h b/fs/xfs/xfs_super.h
> > index bbe3d15..31f757c 100644
> > --- a/fs/xfs/xfs_super.h
> > +++ b/fs/xfs/xfs_super.h
> > @@ -44,16 +44,6 @@ extern void xfs_qm_exit(void);
> >  # define XFS_REALTIME_STRING
> >  #endif
> >  
> > -#if XFS_BIG_BLKNOS
> > -# if XFS_BIG_INUMS
> > -#  define XFS_BIGFS_STRING "large block/inode numbers, "
> > -# else
> > -#  define XFS_BIGFS_STRING "large block numbers, "
> > -# endif
> > -#else
> > -# define XFS_BIGFS_STRING
> > -#endif
> > -
> >  #ifdef DEBUG
> >  # define XFS_DBG_STRING            "debug"
> >  #else
> > @@ -64,7 +54,6 @@ extern void xfs_qm_exit(void);
> >  #define XFS_BUILD_OPTIONS  XFS_ACL_STRING \
> >                             XFS_SECURITY_STRING \
> >                             XFS_REALTIME_STRING \
> > -                           XFS_BIGFS_STRING \
> >                             XFS_DBG_STRING /* DBG must be last */
> >  
> >  struct xfs_inode;
> > diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h
> > index 82bbc34..14e3d87 100644
> > --- a/fs/xfs/xfs_types.h
> > +++ b/fs/xfs/xfs_types.h
> > @@ -38,43 +38,18 @@ typedef __int32_t       xfs_tid_t;      /* transaction 
> > identifier */
> >  typedef    __uint32_t      xfs_dablk_t;    /* dir/attr block number (in 
> > file) */
> >  typedef    __uint32_t      xfs_dahash_t;   /* dir/attr hash value */
> >  
> > -/*
> > - * These types are 64 bits on disk but are either 32 or 64 bits in memory.
> > - * Disk based types:
> > - */
> > -typedef __uint64_t xfs_dfsbno_t;   /* blockno in filesystem (agno|agbno) */
> > -typedef __uint64_t xfs_drfsbno_t;  /* blockno in filesystem (raw) */
> > -typedef    __uint64_t      xfs_drtbno_t;   /* extent (block) in realtime 
> > area */
> > -typedef    __uint64_t      xfs_dfiloff_t;  /* block number in a file */
> > -typedef    __uint64_t      xfs_dfilblks_t; /* number of blocks in a file */
> > -
> > -/*
> > - * Memory based types are conditional.
> > - */
> > -#if XFS_BIG_BLKNOS
> >  typedef    __uint64_t      xfs_fsblock_t;  /* blockno in filesystem 
> > (agno|agbno) */
> >  typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
> >  typedef __uint64_t xfs_rtblock_t;  /* extent (block) in realtime area */
> > -typedef    __int64_t       xfs_srtblock_t; /* signed version of 
> > xfs_rtblock_t */
> > -#else
> > -typedef    __uint32_t      xfs_fsblock_t;  /* blockno in filesystem 
> > (agno|agbno) */
> > -typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
> > -typedef __uint32_t xfs_rtblock_t;  /* extent (block) in realtime area */
> > -typedef    __int32_t       xfs_srtblock_t; /* signed version of 
> > xfs_rtblock_t */
> > -#endif
> >  typedef __uint64_t xfs_fileoff_t;  /* block number in a file */
> > -typedef __int64_t  xfs_sfiloff_t;  /* signed block number in a file */
> >  typedef __uint64_t xfs_filblks_t;  /* number of blocks in a file */
> >  
> > +typedef    __int64_t       xfs_srtblock_t; /* signed version of 
> > xfs_rtblock_t */
> > +typedef __int64_t  xfs_sfiloff_t;  /* signed block number in a file */
> >  
> >  /*
> >   * Null values for the types.
> >   */
> > -#define    NULLDFSBNO      ((xfs_dfsbno_t)-1)
> > -#define    NULLDRFSBNO     ((xfs_drfsbno_t)-1)
> > -#define    NULLDRTBNO      ((xfs_drtbno_t)-1)
> > -#define    NULLDFILOFF     ((xfs_dfiloff_t)-1)
> > -
> >  #define    NULLFSBLOCK     ((xfs_fsblock_t)-1)
> >  #define    NULLRFSBLOCK    ((xfs_rfsblock_t)-1)
> >  #define    NULLRTBLOCK     ((xfs_rtblock_t)-1)
> ---end quoted text---
> 
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---end quoted text---

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