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Diffstat (limited to 'fs/xfs/xfs_ialloc.c')
-rw-r--r--fs/xfs/xfs_ialloc.c132
1 files changed, 112 insertions, 20 deletions
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index aad8c5da38af..c8a56c529642 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -119,6 +119,102 @@ xfs_ialloc_cluster_alignment(
}
/*
+ * Lookup the record equal to ino in the btree given by cur.
+ */
+STATIC int /* error */
+xfs_inobt_lookup_eq(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ xfs_agino_t ino, /* starting inode of chunk */
+ __int32_t fcnt, /* free inode count */
+ xfs_inofree_t free, /* free inode mask */
+ int *stat) /* success/failure */
+{
+ cur->bc_rec.i.ir_startino = ino;
+ cur->bc_rec.i.ir_freecount = fcnt;
+ cur->bc_rec.i.ir_free = free;
+ return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
+}
+
+/*
+ * Lookup the first record greater than or equal to ino
+ * in the btree given by cur.
+ */
+int /* error */
+xfs_inobt_lookup_ge(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ xfs_agino_t ino, /* starting inode of chunk */
+ __int32_t fcnt, /* free inode count */
+ xfs_inofree_t free, /* free inode mask */
+ int *stat) /* success/failure */
+{
+ cur->bc_rec.i.ir_startino = ino;
+ cur->bc_rec.i.ir_freecount = fcnt;
+ cur->bc_rec.i.ir_free = free;
+ return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
+}
+
+/*
+ * Lookup the first record less than or equal to ino
+ * in the btree given by cur.
+ */
+int /* error */
+xfs_inobt_lookup_le(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ xfs_agino_t ino, /* starting inode of chunk */
+ __int32_t fcnt, /* free inode count */
+ xfs_inofree_t free, /* free inode mask */
+ int *stat) /* success/failure */
+{
+ cur->bc_rec.i.ir_startino = ino;
+ cur->bc_rec.i.ir_freecount = fcnt;
+ cur->bc_rec.i.ir_free = free;
+ return xfs_btree_lookup(cur, XFS_LOOKUP_LE, stat);
+}
+
+/*
+ * Update the record referred to by cur to the value given
+ * by [ino, fcnt, free].
+ * This either works (return 0) or gets an EFSCORRUPTED error.
+ */
+STATIC int /* error */
+xfs_inobt_update(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ xfs_agino_t ino, /* starting inode of chunk */
+ __int32_t fcnt, /* free inode count */
+ xfs_inofree_t free) /* free inode mask */
+{
+ union xfs_btree_rec rec;
+
+ rec.inobt.ir_startino = cpu_to_be32(ino);
+ rec.inobt.ir_freecount = cpu_to_be32(fcnt);
+ rec.inobt.ir_free = cpu_to_be64(free);
+ return xfs_btree_update(cur, &rec);
+}
+
+/*
+ * Get the data from the pointed-to record.
+ */
+int /* error */
+xfs_inobt_get_rec(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ xfs_agino_t *ino, /* output: starting inode of chunk */
+ __int32_t *fcnt, /* output: number of free inodes */
+ xfs_inofree_t *free, /* output: free inode mask */
+ int *stat) /* output: success/failure */
+{
+ union xfs_btree_rec *rec;
+ int error;
+
+ error = xfs_btree_get_rec(cur, &rec, stat);
+ if (!error && *stat == 1) {
+ *ino = be32_to_cpu(rec->inobt.ir_startino);
+ *fcnt = be32_to_cpu(rec->inobt.ir_freecount);
+ *free = be64_to_cpu(rec->inobt.ir_free);
+ }
+ return error;
+}
+
+/*
* Allocate new inodes in the allocation group specified by agbp.
* Return 0 for success, else error code.
*/
@@ -335,8 +431,7 @@ xfs_ialloc_ag_alloc(
/*
* Insert records describing the new inode chunk into the btree.
*/
- cur = xfs_btree_init_cursor(args.mp, tp, agbp, agno,
- XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(args.mp, tp, agbp, agno);
for (thisino = newino;
thisino < newino + newlen;
thisino += XFS_INODES_PER_CHUNK) {
@@ -346,7 +441,7 @@ xfs_ialloc_ag_alloc(
return error;
}
ASSERT(i == 0);
- if ((error = xfs_inobt_insert(cur, &i))) {
+ if ((error = xfs_btree_insert(cur, &i))) {
xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
return error;
}
@@ -676,8 +771,7 @@ nextag:
*/
agno = tagno;
*IO_agbp = NULL;
- cur = xfs_btree_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno),
- XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno));
/*
* If pagino is 0 (this is the root inode allocation) use newino.
* This must work because we've just allocated some.
@@ -697,7 +791,7 @@ 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);
@@ -741,7 +835,7 @@ nextag:
/*
* 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) {
@@ -755,7 +849,7 @@ 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) {
@@ -817,7 +911,7 @@ nextag:
* further left.
*/
if (useleft) {
- if ((error = xfs_inobt_decrement(tcur, 0,
+ if ((error = xfs_btree_decrement(tcur, 0,
&i)))
goto error1;
doneleft = !i;
@@ -837,7 +931,7 @@ nextag:
* further right.
*/
else {
- if ((error = xfs_inobt_increment(cur, 0,
+ if ((error = xfs_btree_increment(cur, 0,
&i)))
goto error1;
doneright = !i;
@@ -892,7 +986,7 @@ 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);
}
@@ -926,7 +1020,7 @@ 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) ||
@@ -1022,8 +1116,7 @@ xfs_difree(
/*
* Initialize the cursor.
*/
- cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_INO,
- (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, tp, agbp, agno);
#ifdef DEBUG
if (cur->bc_nlevels == 1) {
int freecount = 0;
@@ -1036,7 +1129,7 @@ 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);
@@ -1098,8 +1191,8 @@ xfs_difree(
xfs_trans_mod_sb(tp, XFS_TRANS_SB_ICOUNT, -ilen);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1));
- if ((error = xfs_inobt_delete(cur, &i))) {
- cmn_err(CE_WARN, "xfs_difree: xfs_inobt_delete returned an error %d on %s.\n",
+ if ((error = xfs_btree_delete(cur, &i))) {
+ cmn_err(CE_WARN, "xfs_difree: xfs_btree_delete returned an error %d on %s.\n",
error, mp->m_fsname);
goto error0;
}
@@ -1141,7 +1234,7 @@ 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);
@@ -1259,8 +1352,7 @@ xfs_dilocate(
#endif /* DEBUG */
return error;
}
- cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_INO,
- (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, tp, agbp, agno);
if ((error = xfs_inobt_lookup_le(cur, agino, 0, 0, &i))) {
#ifdef DEBUG
xfs_fs_cmn_err(CE_ALERT, mp, "xfs_dilocate: "
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