Commit 27a1e8a0 authored by Roberto Bergantinos Corpas's avatar Roberto Bergantinos Corpas Committed by J. Bruce Fields

sunrpc: raise kernel RPC channel buffer size

Its possible that using AUTH_SYS and mountd manage-gids option a
user may hit the 8k RPC channel buffer limit. This have been observed
on field, causing unanswered RPCs on clients after mountd fails to
write on channel :

rpc.mountd[11231]: auth_unix_gid: error writing reply

Userland nfs-utils uses a buffer size of 32k (RPC_CHAN_BUF_SIZE), so
lets match those two.
Signed-off-by: default avatarRoberto Bergantinos Corpas <rbergant@redhat.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent c327a310
...@@ -909,7 +909,7 @@ static ssize_t cache_do_downcall(char *kaddr, const char __user *buf, ...@@ -909,7 +909,7 @@ static ssize_t cache_do_downcall(char *kaddr, const char __user *buf,
static ssize_t cache_slow_downcall(const char __user *buf, static ssize_t cache_slow_downcall(const char __user *buf,
size_t count, struct cache_detail *cd) size_t count, struct cache_detail *cd)
{ {
static char write_buf[8192]; /* protected by queue_io_mutex */ static char write_buf[32768]; /* protected by queue_io_mutex */
ssize_t ret = -EINVAL; ssize_t ret = -EINVAL;
if (count >= sizeof(write_buf)) if (count >= sizeof(write_buf))
......
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