fs/nfsd: change type of max_delegations, nfsd_drc_max_mem and nfsd_drc_mem_used
The three variables are calculated from nr_free_buffer_pages so change
their types to unsigned long in case of overflow.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index ac8ed96..499e957 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -151,7 +151,7 @@
}
static int num_delegations;
-unsigned int max_delegations;
+unsigned long max_delegations;
/*
* Open owner state (share locks)
@@ -700,8 +700,8 @@
num = min_t(u32, num, NFSD_MAX_SLOTS_PER_SESSION);
spin_lock(&nfsd_drc_lock);
- avail = min_t(int, NFSD_MAX_MEM_PER_SESSION,
- nfsd_drc_max_mem - nfsd_drc_mem_used);
+ avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION,
+ nfsd_drc_max_mem - nfsd_drc_mem_used);
num = min_t(int, num, avail / slotsize);
nfsd_drc_mem_used += num * slotsize;
spin_unlock(&nfsd_drc_lock);