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authorChris Metcalf <cmetcalf@tilera.com>2011-08-12 00:54:28 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-01-05 19:42:42 +0400
commit3476f114addb7b96912840a234702f660a1f460b (patch)
tree830f4aa3e7a280af8d3e02d7a67e25bdffa7ab37 /fs/nfs
parent0b1c8fc43c1f9fcde2d18182988f05eeaaae509b (diff)
downloadlinux-3476f114addb7b96912840a234702f660a1f460b.tar.xz
nfs: fix a minor do_div portability issue
This change modifies filelayout_get_dense_offset() to use the functions in math64.h and thus avoid a 32-bit platform compile error trying to use do_div() on an s64 type. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Reviewed-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4filelayout.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index a62d36b9a99e..71ec08617e23 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -49,13 +49,14 @@ filelayout_get_dense_offset(struct nfs4_filelayout_segment *flseg,
loff_t offset)
{
u32 stripe_width = flseg->stripe_unit * flseg->dsaddr->stripe_count;
- u64 tmp;
+ u64 stripe_no;
+ u32 rem;
offset -= flseg->pattern_offset;
- tmp = offset;
- do_div(tmp, stripe_width);
+ stripe_no = div_u64(offset, stripe_width);
+ div_u64_rem(offset, flseg->stripe_unit, &rem);
- return tmp * flseg->stripe_unit + do_div(offset, flseg->stripe_unit);
+ return stripe_no * flseg->stripe_unit + rem;
}
/* This function is used by the layout driver to calculate the