[XFS] implement generic xfs_btree_update

From: Dave Chinner <dgc@sgi.com>

The most complicated part here is the lastrec tracking for the alloc
btree. Most logic is in the update_lastrec method which has to do some
hopefully good enough dirty magic to maintain it.

[hch: split out from bigger patch and a rework of the lastrec

logic]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32194a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>

1 files changed, 0 insertions, 45 deletions

diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index 0a56257b7fd5..99200a9898f7 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -1964,51 +1964,6 @@ xfs_bmbt_to_bmdr(
 }
 
 /*
- * Update the record to the passed values.
- */
-int
-xfs_bmbt_update(
-        xfs_btree_cur_t         *cur,
-        xfs_fileoff_t           off,
-        xfs_fsblock_t           bno,
-        xfs_filblks_t           len,
-        xfs_exntst_t            state)
-{
-        xfs_bmbt_block_t        *block;
-        xfs_buf_t               *bp;
-        int                     error;
-        xfs_bmbt_key_t          key;
-        int                     ptr;
-        xfs_bmbt_rec_t          *rp;
-
-        XFS_BMBT_TRACE_CURSOR(cur, ENTRY);
-        XFS_BMBT_TRACE_ARGFFFI(cur, (xfs_dfiloff_t)off, (xfs_dfsbno_t)bno,
-                (xfs_dfilblks_t)len, (int)state);
-        block = xfs_bmbt_get_block(cur, 0, &bp);
-#ifdef DEBUG
-        if ((error = xfs_btree_check_lblock(cur, block, 0, bp))) {
-                XFS_BMBT_TRACE_CURSOR(cur, ERROR);
-                return error;
-        }
-#endif
-        ptr = cur->bc_ptrs[0];
-        rp = XFS_BMAP_REC_IADDR(block, ptr, cur);
-        xfs_bmbt_disk_set_allf(rp, off, bno, len, state);
-        xfs_bmbt_log_recs(cur, bp, ptr, ptr);
-        if (ptr > 1) {
-                XFS_BMBT_TRACE_CURSOR(cur, EXIT);
-                return 0;
-        }
-        key.br_startoff = cpu_to_be64(off);
-        if ((error = xfs_btree_updkey(cur, (union xfs_btree_key *)&key, 1))) {
-                XFS_BMBT_TRACE_CURSOR(cur, ERROR);
-                return error;
-        }
-        XFS_BMBT_TRACE_CURSOR(cur, EXIT);
-        return 0;
-}
-
-/*
  * Check extent records, which have just been read, for
  * any bit in the extent flag field. ASSERT on debug
  * kernels, as this condition should not occur.