Subtraction of signed integers does not have well defined wraparound
semantics in the C99 standard. In order to be wraparound-safe, we
have to use unsigned subtraction, and then cast the result.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/pnfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 4755858e37a0..6e67ada6c22c 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -662,7 +662,7 @@ pnfs_destroy_all_layouts(struct nfs_client *clp)
*/
static bool pnfs_seqid_is_newer(u32 s1, u32 s2)
{
- return (s32)s1 - (s32)s2 > 0;
+ return (s32)(s1 - s2) > 0;
}
/* update lo->plh_stateid with new if is more recent */
--
1.8.5.3
--
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