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authorBrian Foster <bfoster@redhat.com>2015-06-04 13:03:34 +1000
committerDave Chinner <david@fromorbit.com>2015-06-04 13:03:34 +1000
commit3cdaa1898ff3b16f69619cb5df2f45158e104817 (patch)
tree40dc200db0e82978d6e12794e01e2d21147b75c1 /fs/xfs
parent22ce1e1472fda6ce740cee966bb8e25a3cc662bd (diff)
xfs: fix sparse inodes 32-bit compile failure
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@intel.com> Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_inode.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 11a8c28c47bd..a17cf1f16498 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2248,6 +2248,7 @@ 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;
@@ -2268,9 +2269,9 @@ 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;
}