NFS: Don't use GFP_KERNEL in rpcsec_gss downcalls
Again, we can deadlock if the memory reclaim triggers a writeback that
requires a rpcsec_gss credential lookup.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/auth_gss/gss_krb5_keys.c b/net/sunrpc/auth_gss/gss_krb5_keys.c
index 33b87f0..76e42e6 100644
--- a/net/sunrpc/auth_gss/gss_krb5_keys.c
+++ b/net/sunrpc/auth_gss/gss_krb5_keys.c
@@ -150,7 +150,8 @@
u32 krb5_derive_key(const struct gss_krb5_enctype *gk5e,
const struct xdr_netobj *inkey,
struct xdr_netobj *outkey,
- const struct xdr_netobj *in_constant)
+ const struct xdr_netobj *in_constant,
+ gfp_t gfp_mask)
{
size_t blocksize, keybytes, keylength, n;
unsigned char *inblockdata, *outblockdata, *rawkey;
@@ -175,15 +176,15 @@
/* allocate and set up buffers */
ret = ENOMEM;
- inblockdata = kmalloc(blocksize, GFP_KERNEL);
+ inblockdata = kmalloc(blocksize, gfp_mask);
if (inblockdata == NULL)
goto err_free_cipher;
- outblockdata = kmalloc(blocksize, GFP_KERNEL);
+ outblockdata = kmalloc(blocksize, gfp_mask);
if (outblockdata == NULL)
goto err_free_in;
- rawkey = kmalloc(keybytes, GFP_KERNEL);
+ rawkey = kmalloc(keybytes, gfp_mask);
if (rawkey == NULL)
goto err_free_out;