[XFS] implement generic xfs_btree_decrement
From: Dave Chinner <dgc@sgi.com>
[hch: split out from bigger patch and minor adaptions]
SGI-PV: 985583
SGI-Modid: xfs-linux-melb:xfs-kern:32191a
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>
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index b8bb694..7ca6903 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -961,7 +961,7 @@
args->minlen, <bnoa, <lena);
if (ltlena >= args->minlen)
break;
- if ((error = xfs_alloc_decrement(bno_cur_lt, 0, &i)))
+ if ((error = xfs_btree_decrement(bno_cur_lt, 0, &i)))
goto error0;
if (!i) {
xfs_btree_del_cursor(bno_cur_lt,
@@ -1162,7 +1162,7 @@
/*
* Fell off the left end.
*/
- if ((error = xfs_alloc_decrement(
+ if ((error = xfs_btree_decrement(
bno_cur_lt, 0, &i)))
goto error0;
if (!i) {
@@ -1321,7 +1321,7 @@
bestflen = flen;
bestfbno = fbno;
for (;;) {
- if ((error = xfs_alloc_decrement(cnt_cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cnt_cur, 0, &i)))
goto error0;
if (i == 0)
break;
@@ -1416,7 +1416,7 @@
xfs_extlen_t flen;
int i;
- if ((error = xfs_alloc_decrement(ccur, 0, &i)))
+ if ((error = xfs_btree_decrement(ccur, 0, &i)))
goto error0;
if (i) {
if ((error = xfs_alloc_get_rec(ccur, &fbno, &flen, &i)))
@@ -1607,7 +1607,7 @@
/*
* Move the by-block cursor back to the left neighbor.
*/
- if ((error = xfs_alloc_decrement(bno_cur, 0, &i)))
+ if ((error = xfs_btree_decrement(bno_cur, 0, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
#ifdef DEBUG
@@ -1653,7 +1653,7 @@
* Back up the by-block cursor to the left neighbor, and
* update its length.
*/
- if ((error = xfs_alloc_decrement(bno_cur, 0, &i)))
+ if ((error = xfs_btree_decrement(bno_cur, 0, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
nbno = ltbno;
diff --git a/fs/xfs/xfs_alloc_btree.c b/fs/xfs/xfs_alloc_btree.c
index febc2d5..6b45481 100644
--- a/fs/xfs/xfs_alloc_btree.c
+++ b/fs/xfs/xfs_alloc_btree.c
@@ -256,7 +256,7 @@
xfs_btree_setbuf(cur, level, NULL);
cur->bc_nlevels--;
} else if (level > 0 &&
- (error = xfs_alloc_decrement(cur, level, &i)))
+ (error = xfs_btree_decrement(cur, level, &i)))
return error;
*stat = 1;
return 0;
@@ -272,7 +272,7 @@
* the minimum, we're done.
*/
if (numrecs >= XFS_ALLOC_BLOCK_MINRECS(level, cur)) {
- if (level > 0 && (error = xfs_alloc_decrement(cur, level, &i)))
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &i)))
return error;
*stat = 1;
return 0;
@@ -336,7 +336,7 @@
xfs_btree_del_cursor(tcur,
XFS_BTREE_NOERROR);
if (level > 0 &&
- (error = xfs_alloc_decrement(cur, level,
+ (error = xfs_btree_decrement(cur, level,
&i)))
return error;
*stat = 1;
@@ -352,7 +352,7 @@
if (lbno != NULLAGBLOCK) {
i = xfs_btree_firstrec(tcur, level);
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
- if ((error = xfs_alloc_decrement(tcur, level, &i)))
+ if ((error = xfs_btree_decrement(tcur, level, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
}
@@ -368,7 +368,7 @@
*/
i = xfs_btree_firstrec(tcur, level);
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
- if ((error = xfs_alloc_decrement(tcur, level, &i)))
+ if ((error = xfs_btree_decrement(tcur, level, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
xfs_btree_firstrec(tcur, level);
@@ -468,7 +468,7 @@
* Just return. This is probably a logic error, but it's not fatal.
*/
else {
- if (level > 0 && (error = xfs_alloc_decrement(cur, level, &i)))
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &i)))
return error;
*stat = 1;
return 0;
@@ -1780,90 +1780,6 @@
*/
/*
- * Decrement cursor by one record at the level.
- * For nonzero levels the leaf-ward information is untouched.
- */
-int /* error */
-xfs_alloc_decrement(
- xfs_btree_cur_t *cur, /* btree cursor */
- int level, /* level in btree, 0 is leaf */
- int *stat) /* success/failure */
-{
- xfs_alloc_block_t *block; /* btree block */
- int error; /* error return value */
- int lev; /* btree level */
-
- ASSERT(level < cur->bc_nlevels);
- /*
- * Read-ahead to the left at this level.
- */
- xfs_btree_readahead(cur, level, XFS_BTCUR_LEFTRA);
- /*
- * Decrement the ptr at this level. If we're still in the block
- * then we're done.
- */
- if (--cur->bc_ptrs[level] > 0) {
- *stat = 1;
- return 0;
- }
- /*
- * Get a pointer to the btree block.
- */
- block = XFS_BUF_TO_ALLOC_BLOCK(cur->bc_bufs[level]);
-#ifdef DEBUG
- if ((error = xfs_btree_check_sblock(cur, block, level,
- cur->bc_bufs[level])))
- return error;
-#endif
- /*
- * If we just went off the left edge of the tree, return failure.
- */
- if (be32_to_cpu(block->bb_leftsib) == NULLAGBLOCK) {
- *stat = 0;
- return 0;
- }
- /*
- * March up the tree decrementing pointers.
- * Stop when we don't go off the left edge of a block.
- */
- for (lev = level + 1; lev < cur->bc_nlevels; lev++) {
- if (--cur->bc_ptrs[lev] > 0)
- break;
- /*
- * Read-ahead the left block, we're going to read it
- * in the next loop.
- */
- xfs_btree_readahead(cur, lev, XFS_BTCUR_LEFTRA);
- }
- /*
- * If we went off the root then we are seriously confused.
- */
- ASSERT(lev < cur->bc_nlevels);
- /*
- * Now walk back down the tree, fixing up the cursor's buffer
- * pointers and key numbers.
- */
- for (block = XFS_BUF_TO_ALLOC_BLOCK(cur->bc_bufs[lev]); lev > level; ) {
- xfs_agblock_t agbno; /* block number of btree block */
- xfs_buf_t *bp; /* buffer pointer for block */
-
- agbno = be32_to_cpu(*XFS_ALLOC_PTR_ADDR(block, cur->bc_ptrs[lev], cur));
- if ((error = xfs_btree_read_bufs(cur->bc_mp, cur->bc_tp,
- cur->bc_private.a.agno, agbno, 0, &bp,
- XFS_ALLOC_BTREE_REF)))
- return error;
- lev--;
- xfs_btree_setbuf(cur, lev, bp);
- block = XFS_BUF_TO_ALLOC_BLOCK(bp);
- if ((error = xfs_btree_check_sblock(cur, block, lev, bp)))
- return error;
- cur->bc_ptrs[lev] = be16_to_cpu(block->bb_numrecs);
- }
- *stat = 1;
- return 0;
-}
-
-/*
* Delete the record pointed to by cur.
* The cursor refers to the place where the record was (could be inserted)
* when the operation returns.
@@ -1889,7 +1805,7 @@
if (i == 0) {
for (level = 1; level < cur->bc_nlevels; level++) {
if (cur->bc_ptrs[level] == 0) {
- if ((error = xfs_alloc_decrement(cur, level, &i)))
+ if ((error = xfs_btree_decrement(cur, level, &i)))
return error;
break;
}
diff --git a/fs/xfs/xfs_alloc_btree.h b/fs/xfs/xfs_alloc_btree.h
index 643cfab..b59d7fc 100644
--- a/fs/xfs/xfs_alloc_btree.h
+++ b/fs/xfs/xfs_alloc_btree.h
@@ -95,12 +95,6 @@
XFS_BTREE_PTR_ADDR(xfs_alloc, bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
/*
- * Decrement cursor by one record at the level.
- * For nonzero levels the leaf-ward information is untouched.
- */
-extern int xfs_alloc_decrement(struct xfs_btree_cur *cur, int level, int *stat);
-
-/*
* Delete the record pointed to by cur.
* The cursor refers to the place where the record was (could be inserted)
* when the operation returns.
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 4b1ec44..bdbab54 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -820,7 +820,7 @@
if ((error = xfs_bmbt_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
@@ -1381,13 +1381,13 @@
if ((error = xfs_bmbt_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
@@ -1430,7 +1430,7 @@
if ((error = xfs_bmbt_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
@@ -1473,7 +1473,7 @@
if ((error = xfs_bmbt_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, new->br_startoff,
@@ -1556,7 +1556,7 @@
PREV.br_blockcount - new->br_blockcount,
oldext)))
goto done;
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
if (xfs_bmbt_update(cur, LEFT.br_startoff,
LEFT.br_startblock,
@@ -2108,7 +2108,7 @@
if ((error = xfs_bmbt_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
- if ((error = xfs_bmbt_decrement(cur, 0, &i)))
+ if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, left.br_startoff,
diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index 2d29a49..7b5181d 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -203,7 +203,7 @@
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
- if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &j))) {
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &j))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
@@ -216,7 +216,7 @@
goto error0;
}
if (numrecs >= XFS_BMAP_BLOCK_IMINRECS(level, cur)) {
- if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &j))) {
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &j))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
@@ -237,7 +237,7 @@
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
- if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &i))) {
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &i))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
@@ -282,7 +282,7 @@
xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR);
tcur = NULL;
if (level > 0) {
- if ((error = xfs_bmbt_decrement(cur,
+ if ((error = xfs_btree_decrement(cur,
level, &i))) {
XFS_BMBT_TRACE_CURSOR(cur,
ERROR);
@@ -298,7 +298,7 @@
if (lbno != NULLFSBLOCK) {
i = xfs_btree_firstrec(tcur, level);
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
- if ((error = xfs_bmbt_decrement(tcur, level, &i))) {
+ if ((error = xfs_btree_decrement(tcur, level, &i))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
@@ -311,7 +311,7 @@
/*
* decrement to last in block
*/
- if ((error = xfs_bmbt_decrement(tcur, level, &i))) {
+ if ((error = xfs_btree_decrement(tcur, level, &i))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
@@ -383,7 +383,7 @@
}
lrecs = be16_to_cpu(left->bb_numrecs);
} else {
- if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &i))) {
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &i))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
goto error0;
}
@@ -1487,80 +1487,6 @@
}
/*
- * Decrement cursor by one record at the level.
- * For nonzero levels the leaf-ward information is untouched.
- */
-int /* error */
-xfs_bmbt_decrement(
- xfs_btree_cur_t *cur,
- int level,
- int *stat) /* success/failure */
-{
- xfs_bmbt_block_t *block;
- xfs_buf_t *bp;
- int error; /* error return value */
- xfs_fsblock_t fsbno;
- int lev;
- xfs_mount_t *mp;
- xfs_trans_t *tp;
-
- XFS_BMBT_TRACE_CURSOR(cur, ENTRY);
- XFS_BMBT_TRACE_ARGI(cur, level);
- ASSERT(level < cur->bc_nlevels);
-
- xfs_btree_readahead(cur, level, XFS_BTCUR_LEFTRA);
-
- if (--cur->bc_ptrs[level] > 0) {
- XFS_BMBT_TRACE_CURSOR(cur, EXIT);
- *stat = 1;
- return 0;
- }
- block = xfs_bmbt_get_block(cur, level, &bp);
-#ifdef DEBUG
- if ((error = xfs_btree_check_lblock(cur, block, level, bp))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
-#endif
- if (be64_to_cpu(block->bb_leftsib) == NULLDFSBNO) {
- XFS_BMBT_TRACE_CURSOR(cur, EXIT);
- *stat = 0;
- return 0;
- }
- for (lev = level + 1; lev < cur->bc_nlevels; lev++) {
- if (--cur->bc_ptrs[lev] > 0)
- break;
- xfs_btree_readahead(cur, lev, XFS_BTCUR_LEFTRA);
- }
- if (lev == cur->bc_nlevels) {
- XFS_BMBT_TRACE_CURSOR(cur, EXIT);
- *stat = 0;
- return 0;
- }
- tp = cur->bc_tp;
- mp = cur->bc_mp;
- for (block = xfs_bmbt_get_block(cur, lev, &bp); lev > level; ) {
- fsbno = be64_to_cpu(*XFS_BMAP_PTR_IADDR(block, cur->bc_ptrs[lev], cur));
- if ((error = xfs_btree_read_bufl(mp, tp, fsbno, 0, &bp,
- XFS_BMAP_BTREE_REF))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
- lev--;
- xfs_btree_setbuf(cur, lev, bp);
- block = XFS_BUF_TO_BMBT_BLOCK(bp);
- if ((error = xfs_btree_check_lblock(cur, block, lev, bp))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
- cur->bc_ptrs[lev] = be16_to_cpu(block->bb_numrecs);
- }
- XFS_BMBT_TRACE_CURSOR(cur, EXIT);
- *stat = 1;
- return 0;
-}
-
-/*
* Delete the record pointed to by cur.
*/
int /* error */
@@ -1582,7 +1508,7 @@
if (i == 0) {
for (level = 1; level < cur->bc_nlevels; level++) {
if (cur->bc_ptrs[level] == 0) {
- if ((error = xfs_bmbt_decrement(cur, level,
+ if ((error = xfs_btree_decrement(cur, level,
&i))) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
return error;
diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h
index a45be38..1e0f1d1 100644
--- a/fs/xfs/xfs_bmap_btree.h
+++ b/fs/xfs/xfs_bmap_btree.h
@@ -237,7 +237,6 @@
* Prototypes for xfs_bmap.c to call.
*/
extern void xfs_bmdr_to_bmbt(xfs_bmdr_block_t *, int, xfs_bmbt_block_t *, int);
-extern int xfs_bmbt_decrement(struct xfs_btree_cur *, int, int *);
extern int xfs_bmbt_delete(struct xfs_btree_cur *, int *);
extern void xfs_bmbt_get_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s);
extern xfs_bmbt_block_t *xfs_bmbt_get_block(struct xfs_btree_cur *cur,
diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index e9ab86b..3d561f8 100644
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -1171,3 +1171,102 @@
XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR);
return error;
}
+
+/*
+ * Decrement cursor by one record at the level.
+ * For nonzero levels the leaf-ward information is untouched.
+ */
+int /* error */
+xfs_btree_decrement(
+ struct xfs_btree_cur *cur,
+ int level,
+ int *stat) /* success/failure */
+{
+ struct xfs_btree_block *block;
+ xfs_buf_t *bp;
+ int error; /* error return value */
+ int lev;
+ union xfs_btree_ptr ptr;
+
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
+ XFS_BTREE_TRACE_ARGI(cur, level);
+
+ ASSERT(level < cur->bc_nlevels);
+
+ /* Read-ahead to the left at this level. */
+ xfs_btree_readahead(cur, level, XFS_BTCUR_LEFTRA);
+
+ /* We're done if we remain in the block after the decrement. */
+ if (--cur->bc_ptrs[level] > 0)
+ goto out1;
+
+ /* Get a pointer to the btree block. */
+ block = xfs_btree_get_block(cur, level, &bp);
+
+#ifdef DEBUG
+ error = xfs_btree_check_block(cur, block, level, bp);
+ if (error)
+ goto error0;
+#endif
+
+ /* Fail if we just went off the left edge of the tree. */
+ xfs_btree_get_sibling(cur, block, &ptr, XFS_BB_LEFTSIB);
+ if (xfs_btree_ptr_is_null(cur, &ptr))
+ goto out0;
+
+ XFS_BTREE_STATS_INC(cur, decrement);
+
+ /*
+ * March up the tree decrementing pointers.
+ * Stop when we don't go off the left edge of a block.
+ */
+ for (lev = level + 1; lev < cur->bc_nlevels; lev++) {
+ if (--cur->bc_ptrs[lev] > 0)
+ break;
+ /* Read-ahead the left block for the next loop. */
+ xfs_btree_readahead(cur, lev, XFS_BTCUR_LEFTRA);
+ }
+
+ /*
+ * If we went off the root then we are seriously confused.
+ * or the root of the tree is in an inode.
+ */
+ if (lev == cur->bc_nlevels) {
+ if (cur->bc_flags & XFS_BTREE_ROOT_IN_INODE)
+ goto out0;
+ ASSERT(0);
+ error = EFSCORRUPTED;
+ goto error0;
+ }
+ ASSERT(lev < cur->bc_nlevels);
+
+ /*
+ * Now walk back down the tree, fixing up the cursor's buffer
+ * pointers and key numbers.
+ */
+ for (block = xfs_btree_get_block(cur, lev, &bp); lev > level; ) {
+ union xfs_btree_ptr *ptrp;
+
+ ptrp = xfs_btree_ptr_addr(cur, cur->bc_ptrs[lev], block);
+ error = xfs_btree_read_buf_block(cur, ptrp, --lev,
+ 0, &block, &bp);
+ if (error)
+ goto error0;
+ xfs_btree_setbuf(cur, lev, bp);
+ cur->bc_ptrs[lev] = xfs_btree_get_numrecs(block);
+ }
+out1:
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
+ *stat = 1;
+ return 0;
+
+out0:
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
+ *stat = 0;
+ return 0;
+
+error0:
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR);
+ return error;
+}
+
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index f5a4b8e..52b2da6 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -506,6 +506,7 @@
* Common btree core entry points.
*/
int xfs_btree_increment(struct xfs_btree_cur *, int, int *);
+int xfs_btree_decrement(struct xfs_btree_cur *, int, int *);
/*
* Helpers.
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 3a8f067..d36b42b 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -739,7 +739,7 @@
/*
* Search left with tcur, back up 1 record.
*/
- if ((error = xfs_inobt_decrement(tcur, 0, &i)))
+ if ((error = xfs_btree_decrement(tcur, 0, &i)))
goto error1;
doneleft = !i;
if (!doneleft) {
@@ -815,7 +815,7 @@
* further left.
*/
if (useleft) {
- if ((error = xfs_inobt_decrement(tcur, 0,
+ if ((error = xfs_btree_decrement(tcur, 0,
&i)))
goto error1;
doneleft = !i;
diff --git a/fs/xfs/xfs_ialloc_btree.c b/fs/xfs/xfs_ialloc_btree.c
index 41717da..9099a32 100644
--- a/fs/xfs/xfs_ialloc_btree.c
+++ b/fs/xfs/xfs_ialloc_btree.c
@@ -205,7 +205,7 @@
cur->bc_bufs[level] = NULL;
cur->bc_nlevels--;
} else if (level > 0 &&
- (error = xfs_inobt_decrement(cur, level, &i)))
+ (error = xfs_btree_decrement(cur, level, &i)))
return error;
*stat = 1;
return 0;
@@ -222,7 +222,7 @@
*/
if (numrecs >= XFS_INOBT_BLOCK_MINRECS(level, cur)) {
if (level > 0 &&
- (error = xfs_inobt_decrement(cur, level, &i)))
+ (error = xfs_btree_decrement(cur, level, &i)))
return error;
*stat = 1;
return 0;
@@ -286,7 +286,7 @@
xfs_btree_del_cursor(tcur,
XFS_BTREE_NOERROR);
if (level > 0 &&
- (error = xfs_inobt_decrement(cur, level,
+ (error = xfs_btree_decrement(cur, level,
&i)))
return error;
*stat = 1;
@@ -301,7 +301,7 @@
rrecs = be16_to_cpu(right->bb_numrecs);
if (lbno != NULLAGBLOCK) {
xfs_btree_firstrec(tcur, level);
- if ((error = xfs_inobt_decrement(tcur, level, &i)))
+ if ((error = xfs_btree_decrement(tcur, level, &i)))
goto error0;
}
}
@@ -315,7 +315,7 @@
* previous block.
*/
xfs_btree_firstrec(tcur, level);
- if ((error = xfs_inobt_decrement(tcur, level, &i)))
+ if ((error = xfs_btree_decrement(tcur, level, &i)))
goto error0;
xfs_btree_firstrec(tcur, level);
/*
@@ -414,7 +414,7 @@
* Just return. This is probably a logic error, but it's not fatal.
*/
else {
- if (level > 0 && (error = xfs_inobt_decrement(cur, level, &i)))
+ if (level > 0 && (error = xfs_btree_decrement(cur, level, &i)))
return error;
*stat = 1;
return 0;
@@ -1656,90 +1656,6 @@
*/
/*
- * Decrement cursor by one record at the level.
- * For nonzero levels the leaf-ward information is untouched.
- */
-int /* error */
-xfs_inobt_decrement(
- xfs_btree_cur_t *cur, /* btree cursor */
- int level, /* level in btree, 0 is leaf */
- int *stat) /* success/failure */
-{
- xfs_inobt_block_t *block; /* btree block */
- int error;
- int lev; /* btree level */
-
- ASSERT(level < cur->bc_nlevels);
- /*
- * Read-ahead to the left at this level.
- */
- xfs_btree_readahead(cur, level, XFS_BTCUR_LEFTRA);
- /*
- * Decrement the ptr at this level. If we're still in the block
- * then we're done.
- */
- if (--cur->bc_ptrs[level] > 0) {
- *stat = 1;
- return 0;
- }
- /*
- * Get a pointer to the btree block.
- */
- block = XFS_BUF_TO_INOBT_BLOCK(cur->bc_bufs[level]);
-#ifdef DEBUG
- if ((error = xfs_btree_check_sblock(cur, block, level,
- cur->bc_bufs[level])))
- return error;
-#endif
- /*
- * If we just went off the left edge of the tree, return failure.
- */
- if (be32_to_cpu(block->bb_leftsib) == NULLAGBLOCK) {
- *stat = 0;
- return 0;
- }
- /*
- * March up the tree decrementing pointers.
- * Stop when we don't go off the left edge of a block.
- */
- for (lev = level + 1; lev < cur->bc_nlevels; lev++) {
- if (--cur->bc_ptrs[lev] > 0)
- break;
- /*
- * Read-ahead the left block, we're going to read it
- * in the next loop.
- */
- xfs_btree_readahead(cur, lev, XFS_BTCUR_LEFTRA);
- }
- /*
- * If we went off the root then we are seriously confused.
- */
- ASSERT(lev < cur->bc_nlevels);
- /*
- * Now walk back down the tree, fixing up the cursor's buffer
- * pointers and key numbers.
- */
- for (block = XFS_BUF_TO_INOBT_BLOCK(cur->bc_bufs[lev]); lev > level; ) {
- xfs_agblock_t agbno; /* block number of btree block */
- xfs_buf_t *bp; /* buffer containing btree block */
-
- agbno = be32_to_cpu(*XFS_INOBT_PTR_ADDR(block, cur->bc_ptrs[lev], cur));
- if ((error = xfs_btree_read_bufs(cur->bc_mp, cur->bc_tp,
- cur->bc_private.a.agno, agbno, 0, &bp,
- XFS_INO_BTREE_REF)))
- return error;
- lev--;
- xfs_btree_setbuf(cur, lev, bp);
- block = XFS_BUF_TO_INOBT_BLOCK(bp);
- if ((error = xfs_btree_check_sblock(cur, block, lev, bp)))
- return error;
- cur->bc_ptrs[lev] = be16_to_cpu(block->bb_numrecs);
- }
- *stat = 1;
- return 0;
-}
-
-/*
* Delete the record pointed to by cur.
* The cursor refers to the place where the record was (could be inserted)
* when the operation returns.
@@ -1765,7 +1681,7 @@
if (i == 0) {
for (level = 1; level < cur->bc_nlevels; level++) {
if (cur->bc_ptrs[level] == 0) {
- if ((error = xfs_inobt_decrement(cur, level, &i)))
+ if ((error = xfs_btree_decrement(cur, level, &i)))
return error;
break;
}
diff --git a/fs/xfs/xfs_ialloc_btree.h b/fs/xfs/xfs_ialloc_btree.h
index 07fed62..8455459 100644
--- a/fs/xfs/xfs_ialloc_btree.h
+++ b/fs/xfs/xfs_ialloc_btree.h
@@ -117,12 +117,6 @@
i, XFS_INOBT_BLOCK_MAXRECS(1, cur)))
/*
- * Decrement cursor by one record at the level.
- * For nonzero levels the leaf-ward information is untouched.
- */
-extern int xfs_inobt_decrement(struct xfs_btree_cur *cur, int level, int *stat);
-
-/*
* Delete the record pointed to by cur.
* The cursor refers to the place where the record was (could be inserted)
* when the operation returns.