src/patches/suse-2.6.27.39/patches.fixes/nfs-slot-table-alloc

   1 From: Michal Hocko <mhocko@novell.com>
   2 Subject: Don't fail allocations for the slot table when mounting an NFS filesystem
   3 Patch-mainline: no
   4 References: bnc#519820
   5
   6 When the *_slot_table_entries exceeds 111, the slot_table_size
   7 exceeds 32K and an order-4 allocation is forced.  This does not
   8 retry nearly as much as order-3 so failure is more likely.
   9 But mount and autofs in particular doesn't cope well with failure.
  10 So force __GFP_REPEAT - the assumption is that people will only
  11 set the slot_table_size sysctl large on a machine with plenty
  12 of memory, so this should not block indefinitely.
  13
  14 Acked-by: Neil Brown <neilb@suse.de>
  15 Signed-off-by: Neil Brown <neilb@suse.de>
  16
  17 ---
  18  net/sunrpc/xprtsock.c |    4 ++--
  19  1 file changed, 2 insertions(+), 2 deletions(-)
  20
  21 --- linux-2.6.27-SLE11_BRANCH.orig/net/sunrpc/xprtsock.c
  22 +++ linux-2.6.27-SLE11_BRANCH/net/sunrpc/xprtsock.c
  23 @@ -2011,7 +2011,7 @@ static struct rpc_xprt *xs_setup_xprt(st
  24         xprt = &new->xprt;
  25
  26         xprt->max_reqs = slot_table_size;
  27 -       xprt->slot = kcalloc(xprt->max_reqs, sizeof(struct rpc_rqst), GFP_KERNEL);
  28 +       xprt->slot = kcalloc(xprt->max_reqs, sizeof(struct rpc_rqst), GFP_KERNEL | __GFP_REPEAT);
  29         if (xprt->slot == NULL) {
  30                 kfree(xprt);
  31                 dprintk("RPC:       xs_setup_xprt: couldn't allocate slot "