The kbuild test robot reports the following compilation failure with a
32-bit kernel configuration:
fs/built-in.o: In function `xfs_ifree_cluster':
>> xfs_inode.c:(.text+0x17ac84): undefined reference to `__umoddi3'
This is due to the use of the modulus operator on a 64-bit variable in
the ASSERT() added as part of the following commit:
xfs: skip unallocated regions of inode chunks in xfs_ifree_cluster()
This ASSERT() simply checks that the offset of the inode in a sparse
cluster is appropriately aligned. Since the maximum inode record offset
is 63 (for a 64 inode record) and the calculated offset here should be
something less than that, just use a 32-bit variable to store the offset
and call the do_mod() helper.
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
---
The do_mod() helper requires use of a variable for the first parameter,
so that alone probably resolves the issue. This uses do_mod()
nonetheless...
Brian
fs/xfs/xfs_inode.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 4c054f6..17cd90c 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2244,6 +2244,7 @@ xfs_ifree_cluster(
int inodes_per_cluster;
int nbufs;
int i, j;
+ int ioffset;
xfs_daddr_t blkno;
xfs_buf_t *bp;
xfs_inode_t *ip;
@@ -2264,9 +2265,9 @@ xfs_ifree_cluster(
* physically allocated. Skip the cluster if an inode falls into
* a sparse region.
*/
- if ((xic->alloc & XFS_INOBT_MASK(inum - xic->first_ino)) == 0) {
- ASSERT(((inum - xic->first_ino) %
- inodes_per_cluster) == 0);
+ ioffset = inum - xic->first_ino;
+ if ((xic->alloc & XFS_INOBT_MASK(ioffset)) == 0) {
+ ASSERT(do_mod(ioffset, inodes_per_cluster) == 0);
continue;
}
--
1.9.3
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