[XFS] implement generic xfs_btree_increment

From: Dave Chinner <dgc@sgi.com>

Because this is the first major generic btree routine this patch includes
some infrastrucure, first a few routines to deal with a btree block that
can be either in short or long form, second xfs_btree_read_buf_block,
which is the new central routine to read a btree block given a cursor, and
third the new xfs_btree_ptr_addr routine to calculate the address for a
given btree pointer record.

[hch: split out from bigger patch and minor adaptions]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32190a

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, 7 insertions, 7 deletions

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 11bb169561ce..3a8f0670e070 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -695,7 +695,7 @@ nextag:
                                 goto error0;
                         XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
                         freecount += rec.ir_freecount;
-                        if ((error = xfs_inobt_increment(cur, 0, &i)))
+                        if ((error = xfs_btree_increment(cur, 0, &i)))
                                 goto error0;
                 } while (i == 1);
 
@@ -753,7 +753,7 @@ nextag:
                         /*
                          * Search right with cur, go forward 1 record.
                          */
-                        if ((error = xfs_inobt_increment(cur, 0, &i)))
+                        if ((error = xfs_btree_increment(cur, 0, &i)))
                                 goto error1;
                         doneright = !i;
                         if (!doneright) {
@@ -835,7 +835,7 @@ nextag:
                                  * further right.
                                  */
                                 else {
-                                        if ((error = xfs_inobt_increment(cur, 0,
+                                        if ((error = xfs_btree_increment(cur, 0,
                                                         &i)))
                                                 goto error1;
                                         doneright = !i;
@@ -890,7 +890,7 @@ nextag:
                                 XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
                                 if (rec.ir_freecount > 0)
                                         break;
-                                if ((error = xfs_inobt_increment(cur, 0, &i)))
+                                if ((error = xfs_btree_increment(cur, 0, &i)))
                                         goto error0;
                                 XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
                         }
@@ -924,7 +924,7 @@ nextag:
                                 goto error0;
                         XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
                         freecount += rec.ir_freecount;
-                        if ((error = xfs_inobt_increment(cur, 0, &i)))
+                        if ((error = xfs_btree_increment(cur, 0, &i)))
                                 goto error0;
                 } while (i == 1);
                 ASSERT(freecount == be32_to_cpu(agi->agi_freecount) ||
@@ -1033,7 +1033,7 @@ xfs_difree(
                                 goto error0;
                         if (i) {
                                 freecount += rec.ir_freecount;
-                                if ((error = xfs_inobt_increment(cur, 0, &i)))
+                                if ((error = xfs_btree_increment(cur, 0, &i)))
                                         goto error0;
                         }
                 } while (i == 1);
@@ -1138,7 +1138,7 @@ xfs_difree(
                                 goto error0;
                         if (i) {
                                 freecount += rec.ir_freecount;
-                                if ((error = xfs_inobt_increment(cur, 0, &i)))
+                                if ((error = xfs_btree_increment(cur, 0, &i)))
                                         goto error0;
                         }
                 } while (i == 1);